Dual probe fume detection system implementation scheme

Oil fume concentration on-line monitoring system project implementation plan

Tianjin Zhiyi Times Technology Development Co., Ltd.

table of Contents

The first chapter ** City environmental protection project construction background outline 1

1.1 Overview 1

1.2 Background and Necessity of Project Construction 1

1.3 Summary of State Environmental Protection Application Prospects 2

Chapter II Status Quo of Pollution in Catering Industry 4

2.1** Status Quo of Catering Industry in the City 4

2.2 Smoke pollution environmental conditions 5

2.3 Difficulties in Oil Pollution Control 6

Chapter 3 **Overall Design of On-line Fume Monitoring on Catering Industry in the City 7

3.1 Project Construction Principles 7

3.2 Project Construction Ideas 8

Chapter IV Contents of Front-end Equipment Construction for Fume-monster on-line Monitoring Project in Catering Industry 19

4.1 Production of fumes 19

4.2 Oil smoke components 19

4.3 Supervision Difficulty of Fume Emission 19

4.4 The advantages and disadvantages of the existing fume monitoring methods

4.5 Principle of On-line Monitoring System of Oil Fume Concentration 20

4.6 Application of key technologies for fumes concentration 22

4.7 Oil smoke concentration online monitoring system hardware composition 23

4.8 Concentration of fume on-line monitoring system involving technology 24

4.9 Oil smoke data collector technical characteristics 25

4.10 Soot concentration data collector product configuration 26

Chapter V System Security System 27

5.1 Purpose of Construction 27

5.2 Security System Structure and Features 27

5.3 Security Strategies and Construction Tasks 28

Chapter 6 Service and Warranty Service 31

6.1 Project Service Area 31

6.2 Product Quality Assurance 31

6.3 Shelf life 31

6.5 After-sales service other content 31

6.6 Specific After-sales Services 33

6.7 Project Implementation Leading Group and Work Organization 33

6.8 Staff Training 34

Chapter 7 System Benefits Analysis 34

1.1 Social Benefits 34

1.2 Economic Benefits 34


Chapter One Outline of the Background of the Construction of Municipal Environmental Protection Projects 1.1 Overview

(1) Project Name

** On-line monitoring system of fume concentration in city catering service industry.

(2) Basis for preparation and related standards

State Environmental Protection Administration related documents:

Guiding Opinions on the "Eleventh Five-Year" Development Planning for Environmental Information Construction

"The overall thinking of the "Eleventh Five-Year" development plan for national environmental information construction"

Environmental Information Management Measures

"Environmental Information Standardization Handbook"

"Interim Measures on the Administration of Application Software Development Projects of the State Environmental Protection Administration"

"Administrative Measures for Automatic Monitoring of Pollution Sources"

Pollution source online automatic monitoring (monitoring) system data transmission standard (HJT 212-2005)

1.2 Background and Necessity of Project Construction

(1) Project construction background

With the rapid development of China's economy. The environmental quality of many cities in China has declined, and environmental pollution accidents have occurred from time to time. At present, among the many problems plaguing urban environmental protection, fume pollution in the food and beverage industry is a hot issue of environmental protection that is closely related to the personal interests of the general public. It is also a difficult point in urban environmental management. Strictly controlling the fume pollution in the catering industry is to build an environment. Harmonious development of society and economy, and important measures for creating a harmonious society. Take the catering industry as an example. In the developed areas of catering industry in the city, fume pollution in the catering industry is the most common environmental issue that residents complain and report. These problems are often difficult to get timely solutions and effective control over the long term. We believe that this situation is mainly For the following reasons:

The number of urban fume pollution sources is huge and scattered, and supervision is difficult;

The human resources of the environmental protection department are insufficient: The urban environmental protection department shoulders the arduous work of environmental protection, and the environmental protection department currently has the problem of insufficient personnel. This will inevitably affect the environmental protection work;

Inadequate equipment and technical means: At present, environmental monitoring equipment used by urban environmental protection departments is mostly middle- and low-grade products, and the level of technology is general. It is difficult to meet the requirements for concentrated and efficient management of environmental protection departments in the collection, transmission, processing, and storage of soot concentration data. . The equipment that can meet this requirement is often very expensive, and it is difficult to popularize the use of urban smoke and noise control.

Based on the above background, we decided to build an on-line monitoring system for cooking fume concentration to further strengthen the environmental supervision in key regions, grasp the environmental status in key areas in a timely, dynamic and accurate manner, and improve the response to emergencies. The ability and processing capacity provide scientific basis for decision-making on environmental law enforcement, investigation and handling of pollution accidents, and emergency command and dispatch. In order to meet the needs of the city's public safety system construction, it will also further enhance the city's environmental protection informationization level.

(2) Necessity of project construction

** In urban areas with the most dense urban population and commercial facilities, strengthening the monitoring of environmental quality and preventing the occurrence of environmental pollution accidents has always been one of the priorities of the province. Various monitoring and application systems have also been established one after another to strongly promote the environment. The improvement of the city's environmental protection level has also laid the foundation for the construction of district-level environmental monitoring and emergency command systems.

The significance of the online monitoring system for cooking fume concentration in the food service industry is mainly reflected in the following aspects:

Facilitating the promotion, promotion and application of new environmental protection technologies in the field of environmental protection;

Facilitate the effective control of fume pollution in urban catering service industry;

It is conducive to the city's environmental protection department to effectively perform its duties, improve environmental supervision, and increase people's satisfaction;

It has played an active role in promoting the formation of a good city image, improving the quality of the city, opening wider to the outside world, and improving the quality of life of the people.

(3) Feasibility of project construction

The construction of this project already has considerable conditions and foundations, and it has high feasibility, mainly reflected in:

Governments at all levels, especially the district government and science and technology authorities, attach importance to and support the environmental protection work and environmental protection informationization;

** The Municipal Urban Management Bureau has a strong foundation in the application of informatization, and has done a considerable amount of work in the construction of business application systems, especially in the field of wireless monitoring, and has received unanimous approval from various government departments and the general public. The implementation of wireless remote monitoring has accumulated a wealth of experience.


1.3 Summary of National Environmental Protection Application Prospects

The “12th Five-Year Plan” national environmental protection plan requires that the average treatment rate of urban domestic sewage and garbage will be no less than 80% by 2015, and the average emission concentration of industrial dedusting will be reduced by 40%. The non-power industry will strictly implement the desulfurization standards and the electric power industry will start. Perform denitrification standards. Environmental protection work will begin to take the path of total control of total pollutants, concentrations, and multiple indicators simultaneously.

At present, some international practices on air quality monitoring and evaluation are used to modify and improve the current air quality standards and evaluation (API index) system in the city. As the atmospheric pollution has changed from the former coal-fired pollution to complex pollution such as coal smoke, automobile exhaust, and fume pollution. Formulate a system of air quality including fine particles as soon as possible in the future, conduct regular monitoring of fine particles, incorporate fine particles into the air quality assessment system to better reflect the current air quality to the public, and incorporate ground ozone into the ambient air quality assessment system. To strengthen the management of fume emission exceeding the standard in the catering industry while controlling the pollution of coal smoke, and timely adjust and increase the standard limits of nitrogen dioxide and ozone in the current ambient air quality standards.

The journey of the "Thirteenth Five-Year Plan" has been started, the country has developed into a people's livelihood, and the people are happy and wise in their words and deeds. They have worked hard to achieve the goal of building an overall well-to-do society.


Chapter II Status Quo of Food and Beverage Industry 2.1** Status Quo of Catering Industry in Shanghai

Catering industry, as a traditional service industry in the third industry of Shanghai, experienced four stages of reform and opening up, quantity expansion, scale chain development and brand promotion strategy, and achieved rapid development.

(1) The relative lag of urban planning and design

Due to the accelerating pace of urban construction in recent years, lack of guiding planning and implementation methods for the catering industry, and irrationality and uncertainty in the use of housing, catering companies are more likely to be located in densely populated areas, mixed with residential buildings and not fully considered. The problem of segregation between catering and residential areas, but not for the commercial and residential buildings to reserve a dedicated catering exhaust pipe, some shops in the planning and design does not serve as a restaurant design, simply do not have the catering pollution treatment, emissions conditions, once the operation of catering Enterprises, even if they install or modify environmental protection equipment, are mostly unable to reach the satisfaction of the people. This led to an upward trend in cooking fumes complaints in the catering industry.

(2) Contradiction and inconsistency in management system

Different from the general industry, the state has some special regulations for the food and beverage industry in urban management, food hygiene, and environmental protection. The laws and regulations that are based are the Regulations on the Management of Urban Appearance and Environmental Sanitation, the Law of the People’s Republic of China on Prevention and Control of Atmospheric Pollution, the Law on the Prevention and Control of Environmental Noise Pollution of the People’s Republic of China, and the Food Hygiene Law of the People’s Republic of China, but due to the The departments are different. In the implementation process, due to a variety of factors, they all do their own thing. The lack of coordination and unity has resulted in the situation of “political outflows” and “respective administrations,” resulting in the formation of responsible and non-rights, and the right to blame. It is difficult to form a synergy, and gaps between law enforcement agencies are prone to occur, leaving open loopholes for illegal activities. There are some unnecessary management conflicts with the current environmental administrative system.

(3) The legal concept of operators is weak

Catering enterprises must obtain prior approval documents from the competent departments of the Ministry of Health and Epidemic Prevention, go to the administrative department of industry and commerce for registration, obtain a business license, and then go to the taxation department for tax registration before they can start business; legal operators must be in hardware and software. With respect to the match, you can apply for the relevant card. Because of the unlicensed or super-operating scope of environmental protection due to non-approval, the environmental protection department has no way to deal with it, and it is difficult to investigate and ban it. Under such circumstances, it causes the unlicensed operation in the small-scale catering industry, and the over-scale operation is increasing. Accelerate the development trend.

(4) Incomplete management tools

In the environmental protection examination and approval link: inappropriate site selection, insufficient evaluation of social factors in environmental impact assessment, time-lag in environmental protection approval intervention, and imperfect public participation mechanisms; lack of effective cooperation among the various administrative law enforcement agencies in environmental supervision during law enforcement inspections Mechanisms, low sewage charges, and high enforcement costs; coupled with wastewater and soot pollution control technologies for the catering industry, there is currently a lack of styling equipment with high efficiency, easy operation, low investment, and low operating costs, and the implementation of pollution control programs has increased. Facilities operating rate increased difficulty and so on.

In short, with the rapid development of China's economy, catering industry pollution and harassment as well as governance, it will also be a new task for the ** environmental protection administrative department in ** city to start improving and improving the level of online monitoring, and closely formulate practical and feasible scientific programs to manage for the people's livelihood. Promote harmony.

2.2 Smoke pollution environmental conditions

From the perspective of the distribution characteristics of catering enterprises, the first is to focus on gathering and spontaneously forming distinctive food streets. With the continuous expansion of scale, the problem of imperfect supporting infrastructure is prominent, directly affecting the surrounding environment; the second is scattered and distributed. Commercial (street) districts, communities and tourism and leisure venues at various levels, densely populated areas, and residential or commercial houses are mixed, which directly causes problems of nuisance.

From the point of view of pollution control, taking fume treatment as an example, most catering companies currently install different kinds of fume purification devices in the kitchen, and the occupancy rate is less than 65% from the installation scale, and the operating rate and usage rate. It is not high, and the problem of fume pollution has become one of the biggest source of environmental complaints. Loss of supervision over the environment is in a vacuum. It is reported that the current fume purification technology to mechanical, wet, electrostatic three basic forms and their composite, various types of fume purification equipment emerge in endlessly, purification technology uneven, market access requirements are not standardized. Pollution, such as odor, noise and solid waste, has become a hot spot for complaints, and in densely populated residential areas, small and medium catering is the largest source of air pollution and high-incidence complaints, and is also a hard-hit area for the supervision and control of environmental protection departments.

According to relevant market research agencies, the current fume cleaning technology uses the fifth-generation electrostatic smoking technology and can effectively solve the air fumes, but the application effect or installation environment is not ideal. According to statistics, the fifth generation of food and beverage is currently Industry smoke purifier installation rate is less than 1%, because of different manufacturers, different technologies, a variety of products of uneven quality, some products are marginalized. Moreover, the fifth-generation fume purifier can only emit fumes and can not purify the air. For the air quality itself, there is no improvement at all, and it is not conducive to urban air quality. It is absolutely impossible to scientifically evaluate fume pollution.

In the new period, the national policy advocates green and low-carbon travel to make urban life better. However, there are obvious deficiencies in the fifth-generation fume purifiers, and they need to be improved and improved. We are waiting for us to introduce high-tech new products to the market. The purpose is to facilitate the enforcement and management of national environmental protection agencies, and to include environmental pollution control. Effective Improve the environment and improve air quality. We will wait and see.

2.3 fumes pollution control difficulties

(1) Catering smoke, noise nuisance

People’s lives have been continuously improved, and the catering industry has continued to develop. Because many catering industries are concentrated in densely populated areas and mixed with residential buildings, no dedicated catering and smoke exhaust pipelines are reserved for commercial and residential buildings. With problems such as poor facilities and lack of necessary facilities for pollution prevention and control, problems such as fumes, odors, noise, smoke, sewage, and other pollutants causing disturbances to people have become increasingly prominent. This has seriously affected the normal work and life of surrounding residents, and environmental petitions have also continued to grow. It has reached the point where it cannot be resolved.

As we all know, the sewage discharged from the restaurant industry contains a large amount of peroxides and waste grease, and is directly discharged into the urban sewage pipe network without any treatment. It often causes the sewers to block the overflow of sewage. Most of the fumes and odors emitted are unorganized. It poses a great harm to the environment; the phenomenon of excessive noise is very common. Noise emitted by fans, exhaust fans, air conditioners, etc. seriously affects the normal life, work, and study of the surrounding residents. The problem of environmental pollution has become increasingly prominent.

Smoke pollution and noise pollution have become a hot spot for residents to complain, and it is difficult to handle such complaints, and the rate of repeated complaints is high.

(2) Environmental pollution in restaurant waste water and kitchen waste

The pollution prevention technology and management level of the catering industry are still relatively weak. With the continuous increase of catering enterprises, the pollution problems caused by the environment are becoming more and more serious. In addition, the catering industry has many pollution discharge points and is widely distributed, with complex pollutant components and emissions. The time is basically concentrated in the morning, noon and evening, and it is an intermittent and concentrated discharge. The resulting local pollution is more serious, and more and more disputes are caused by pollutants discharged from the catering industry.

(3) Unlicensed and illegal operations

Under the conditions of market economy, catering business operators, as the main players in the market, directly participate in market competition, operate independently, and assume responsibility for their own profits and losses. They often proceed from their own interests, pursuing maximization of economic benefits, and seldom consider the resulting environmental pollution to the social belt. The external economy, combined with the increasing rigorous examination and approval of environmental protection administrative authorities on the access chain of catering enterprises, a large number of small and medium-sized homeowners often open stores first, apply for business licenses afterwards, and do not implement the environmental impact approval system for construction projects in accordance with the law. Timely declaration of pollutants, coupled with rapid changes in the catering industry, operators often take a passive wait and see, in the case of no license without a license to operate illegally.

Chapter 3 **Overall Design of On-line Cooking Oil Fume Monitoring Project 3.1 Project Construction Principles

The fume on-line clinical test project construction is based on the principle of advanced technology, practical system, reasonable structure, mainstream product, low cost and low maintenance as the basic framework for system architecture design.

(1) Advanced Technology

System selection, configuration of hardware and software equipment must all conform to the trend of high and new technology. The key collection and transmission of soot concentrations are based on technologies and products that are widely used in domestic and international engineering construction. On the premise of satisfying the function, the system design is advanced and will maintain certain advancement in the future.

(2) Rationality of Architecture

The use of advanced and mature technology to structure the fume on-line monitoring of various subsystems to form a stable and reliable large system, so that the fume on-line monitoring system can operate safely and smoothly, effectively eliminate the bottleneck that may occur in each sub fumes on-line monitoring system, and use appropriate equipment to ensure Each subsystem has good scalability. Only a stable and reliable fume on-line monitoring system can ensure the normal operation of all equipment; only a good fume concentration data sharing, real-time fault repair, real-time fume concentration data backup, etc. can form a complete management system.

(3) Economical

Under the premise of meeting the functions and performance requirements of the fume on-line monitoring system, the system construction cost should be reduced as much as possible, and economic and practical technologies and equipment should be adopted.

(4) Practicality

In the selection of equipment, the products with the best performance price ratio and expansion ability are selected based on the actual situation of the fume on-line monitoring project and various types of products with high market share in China.

(5) Maintainability

The designed fume on-line monitoring system and the fume concentration data collector used are simple, practical, easy to operate and easy to maintain. The easy operation and easy maintenance of the fume on-line monitoring system is a condition for ensuring that non-computer professionals use the system. The fume on-line monitoring system should have timely and rapid maintenance when a fault occurs.

(6) Manageability

On-line equipment for on-line monitoring of fumes on-site, centralized control of each sub-system at the center, implementation of control and setup of all remote equipment to ensure that the system performs its management functions efficiently, orderly and reliably.

(7) Security

Take the necessary safety protection measures for the fume on-line monitoring system to prevent virus infections, hacking attacks, lightning strikes, overloads, power cuts, and vandalism, with high security and confidentiality.

(8) Normative

The control protocol, codec protocol, interface protocol, transmission protocol, etc. shall comply with the relevant national standards, industries, standards and technical specifications promulgated by the Ministry of Environmental Protection.

Project basis

● Notice of the General Office of the State Council on Strengthening the Enforcement of Environmental Supervision and Administration (Guobanfa (2014) No. 56)

● GB18483-2001 "Standard for fume emission in catering industry"

● DB111488-2018 "Emission Standard for Air Pollutants in Catering Industry"

● HJ/T212-2005 "Data Source Transmission Standard for Pollution Source Online Automatic Monitoring (Monitoring System)"

● HJ 477-2009 "HJ 477-2009 pollution source online automatic monitoring (monitoring) data acquisition and transmission instrument technical requirements"

●CCAEPI-RG-Y-020-2011 "Overview of on-line monitoring system for fume concentration in catering industry"


3.2 Project Construction Ideas

The establishment of the ** City Environmental Protection Agency monitoring center as the network of urban catering industry smoke concentration online monitoring system network. The establishment of the GPRS data interface between the Monitoring Center of the Urban Management Bureau and the monitoring points of fume emission in various catering enterprises in the urban area, and the data and control information transmission and data fusion exchange. The preliminary construction proposal is based on demonstrations of catering companies with an area of ​​more than 300 square meters.

Data collection flow diagram:

The data collection is divided into two parts, the field equipment data acquisition and transmission part and the monitoring room monitoring terminal as well as the guest access end.

First, field equipment data acquisition and transmission part

1. The fume in the flue is collected by the fume probe installed on the flue of the catering company and the back end of the fume purifier. The fumes are converted into current signals by the sensors in the probe and sent to the data collector.

2. We put forward special requirements for the configuration of the relevant gas sensors. The manufacturer has optimized the parameters of the gas sensors. A plurality of gas sensors are required to work together, and each gas sensor is specifically optimized for some characteristics of the soot. When a plurality of sensors work together, the various components contained in the soot can be effectively measured, thereby ensuring the The fume concentration measurement results are accurate and reliable.

3. According to the collector, various fume signals collected by the probe are comprehensively calculated and analyzed, and the final fume concentration is obtained after calibration according to the national standard measurement result, and the result is accurate and reliable.

The data collector receives a number of current signals sent by the soot sensor and is compiled into a calculable code by a high-precision analog conversion chip. The data collector calculates the precise fume concentration value, fan and purifier switching signals through the model calculation, Smoke detector work status. It is sent by the built-in high-performance GPRS wireless transmission module to the IP and receiving ports of the Urban Urban Management Bureau monitoring center.

Second, monitoring room monitoring terminal and guest access

The three-tiered data server and B/S fume concentration on-line monitoring system are installed in the SAFE Monitoring Center of the Municipality, and the system receives the data sent back by the data collectors installed in the various monitoring points of the catering enterprises and stores them in the database after interpretation by the server. For the platform software and each access client to retrieve data. The system platform software vividly restores the smoking status of catering companies with simple icons and values.

The system platform software adopts the B/S architecture and combines with Web GIS (Network Geographic Information System). The operation is simple and convenient, the interface is beautiful and dynamic, and the functions are powerful and perfect. B/S structure advantages

1) With distributed features, you can conduct business processing such as querying and browsing anywhere, anytime.

2) The business expansion is simple and convenient, and the server function can be increased by adding web pages.

3), maintenance is simple and convenient, only need to change the web page, you can achieve all users of the synchronization update.

4) The secondary development has the advantages of strong extensibility and strong sharing.

5) B/S software data security. For software in the B/S structure, since the data is stored centrally in the database server at the headquarters, the client does not save any service data and database connection information, and no data synchronization is required. Therefore, these security problems naturally disappear. .

In terms of system performance, B/S has the advantage of off-site browsing and information collection flexibility. Anytime, anywhere, any system, as long as you can use the browser to access the Internet, you can use the B/S system's terminal.

Because this fume concentration monitoring system is part of the government's public platform, GIS images can only reach streets and accuracy and their related confidential information has been technically processed.

Field equipment installation diagram:

Site installation steps

1. The fume concentration acquisition probe is installed on the collection hole of the diameter of the elbow and adjustable pipe fittings at the rear straight path of the flue gas purifier on the flue of the catering company, and directly measure the gas fume concentration after purification. Sampling holes are selected according to the guidelines of Chapter 7 of GB/T 16157.

2. The installation of field devices does not require working at heights. The weak voltage of each signal line makes the installation easy and safe.

Checkpoint equipment list:

Device name

Quantity

Use and function

Oil smoke data collector

1

Receives probe data, calculates and sends to the platform to receive

Smoke detector

1

Collect smoke fume concentration data

Fan, purifier start-stop detector

1

Detecting the status of fans and purifiers in catering companies


Monitoring platform software and client introduction;

The system platform software adopts the B/S architecture and combines with Web GIS (Network Geographic Information System). It is equipped with a smart phone to access the platform. The operation is simple and convenient, the interface is beautiful and dynamic, and the functions are powerful and perfect.

Platform software mainly includes data acquisition and management, data query, data statistics and reports, system settings and management, catering unit management, alarm management, data release, mobile phone login and other modules.

First, data collection and management: The fuze concentration data collector's network connection request, receives the reporting soot data, and stores the data in the database. Including receiving fume concentration data and various status data, processing collection and display of fume concentration real-time data, processing of excessive information and alarm information, etc., can display real-time average concentration, maximum value, minimum value, fumes of various catering companies in real time. Emissions, purification efficiency, cleanliness, etc., as well as on-line status of the equipment, alarm status, etc., can be displayed in a variety of ways such as electronic maps, reports, and curves. The system can also monitor the switch status and linkage ratio of fans and purifiers, and display them in reports, curves, and bar charts.

Real-time map monitoring


The system is equipped with a Web GIS system, including electronic maps and satellite maps. The maps are flexible in operation and can be navigated in directions. The display scale can be enlarged or reduced. It can accurately mark the location and name of catering enterprises on the map, and monitor and display the fume concentration, purification efficiency, purifier status, and monitoring time in real time. The map supports the positioning of catering companies. The map has a list of catering companies. By clicking on the company name in the company list, you can directly locate the location of the company and display real-time monitoring data. Through the mouse positioning, the monitoring data of the designated catering company can be displayed, and a real-time data report of the enterprise can be popped up.

Real-time table monitoring

Real-time monitoring and display of fume concentration values ​​of fume emissions from catering companies, purifiers' purification efficiency, cleanliness, purifier switch status, fan switch status, company name, company code, business address, contact phone, monitoring Time and other data. The fume concentration value, the purification efficiency, the purifier switch status, and the fan switch status are displayed in different states in different graphs and can be refreshed in real time. Real-time monitoring reports can be generated at any time as required. For real-time alarms such as exceeding standards and anomalies, the alarm information can be transmitted to the mobile phones of environmental law enforcement officers and corporate environmental protection officials. The alarm conditions include front-end acquisition equipment failure, equipment destruction or movement, monitoring of various cheating methods, and excessive concentration, purifier and fan linkage abnormalities, etc., intelligent analysis and calculation of various alarm conditions to ensure timely alarm and alarm Accurate and reliable. If the severity of the concentration is judged, comprehensive judgment can be made by calculating the amplitude of the concentration exceeding the alarm threshold and the number of times that it exceeds the standard within a certain period of time.

Real-time table monitoring features include:

Data query by minute.

Fume Concentration Column and Line Chart Display


3, the column purification rate of oil fume and line chart display




Second, statistical data query and report: You can query the real-time data and historical data of various catering companies, you can query the relevant information of each catering company. Query results can be expressed in reports, curves, histograms, etc. You can query by entering the start and end time, generate various statistical data, generate related reports, and support the printing and output of reports. The monitoring value of each monitoring point can be calculated according to time and space, such as the average value, the maximum value, the rate exceeding the standard, and so on. The statistical objects can be various monitoring parameters such as fume concentration, purification efficiency, etc. It can also be alarm records and companies, etc. The data can be classified and summarized in minutes, hours, days and months according to time, and can also be in accordance with space. Areas and streets are counted and summarized, and statistics and summaries can also be made according to the cuisine and restaurant flavors. Through statistical summary, it can analyze the fume emission situation, excessive conditions, and purifier efficiency of catering companies in each street or district, so that the environmental protection department can carry out targeted management and governance. Through linkage with the working status of fans and purifiers, a variety of statistics can be made on the concentration data of fumes, such as the average concentration data of various periods, and the data of the working period can be statistically summarized.

Historical data display methods include:

1, report statistics.

2, folding line display

3, histogram display

Third, the data statistics function, can display all the company's scrolling list, including the relevant information of each company, such as the serial number, number, name, address, contact person, telephone, etc., can search for and locate.

Taking the smoke concentration data of each company as the core, it can provide flexible and diverse statistical methods, and can count the exceeding rate of the fume emission companies and the efficiency of purifiers, so as to achieve effective supervision and early warning.

Statistics of selected companies can be displayed, and statistical data can be expressed in various ways such as reports, curves, and histograms.

Statistics can be made by entering the start and end time, and you can choose to count minute concentration data, hourly concentration data, daily concentration data, monthly concentration data, and so on.

It is possible to perform statistics on all reported fume concentration data, or only statistics on fume concentration data during the working hours.

The hourly, daily, monthly, etc. statistics can be made on the mean value, maximum value, minimum value, and concentration over-concentration rate of the working period.

Hourly, daily, monthly, etc. can be used to count the total fume emission.

The statistical purification efficiency can be analyzed, thresholds can be set for purification efficiency, and warning and alarm can be performed separately. Relevant information can generate an alarm record, which can be used to notify managers and businesses via SMS for timely processing and cleaning.

It can count the data of different time periods specified by the company, such as displaying the minute average, hour average, daily average of the company's recent or specified time period, and further subdividing statistics according to working hours. It is also possible to compile similar data of related companies for analysis and comparison.

According to the designated enterprises, all enterprises, designated area enterprises, and designated street enterprises, statistics and display can be made to generate enterprise statistical details for lateral analysis and comparison.

The average value of soot concentration, maximum value, minimum value, concentration over-standard rate, purifier efficiency, fan startup time, purifier start-up time, number of normal enterprises, and number of enterprises exceeding the standard, etc. can be calculated according to each street, each area, and each time period. . The statistical results can be used to classify and summarize the concentration and distribution of fumes in various companies, districts, and streets, and provide early warning of various trends.

Various statistical analysis can provide corresponding report output, which is convenient for backup and management. Data statistics are divided into: area statistics, enterprise statistics, area statistics, enterprise statistics.

Fourth, the data analysis function can analyze and compare the fume concentration and total discharge data of each company according to various classification methods such as plots, streets, and cuisines, and further quantify and reflect the interrelationships among related factors, thus providing The Bureau can effectively monitor and rectify a particular region or focus and provide scientific evidence for achieving less smoke emissions.

Statistical results can be exported by Excel. The management department can define the corresponding reports and report template types, contents and formats according to their own business requirements, and generate reports and reports according to the template.

Fifth, the system is set up and managed: Can set up the relevant operating parameter of the system, and all levels of operation, management authority and password,etc..

6. Catering business management: You can set, view and manage the detailed information of each catering company, such as the catering business name, address, contact person, telephone, number of stoves, emissions, purifier model, equipment ID number, latitude and longitude, etc. Catering companies can increase or decrease at any time.

VII. Oil fume concentration data release: The system adopts the B/S structure. Soot concentration data can be released in real time through WEB.

VIII. The system provides a database interface to support the connection with other environmental protection platforms (such as the pollution source monitoring platform) and the environmental protection platform of the higher authorities.

Nine, smart phone access interface

You can use the smart phone to log on to the online monitor platform for fume concentration to monitor the fume emission concentration of catering companies, purifiers, and fan switch status in real time.

Ten, mobile phone SMS alarm function

On-line fume concentration monitoring system found that the concentration exceeded, abnormal equipment, etc., will automatically send alarm information to the environmental protection managers and corporate environmental protection person in charge of the phone.

Eleventh, APP end function introduction

APP supports ISO and Android systems. Its functional design is the same as that of WEB software. It has functions such as real-time data monitoring, historical data query, statistical analysis, operation and maintenance management, and law enforcement management. It supports the monitoring status of each catering company through GIS map positioning. The APP interface has a clear design style and is easy to operate. It is convenient for users to view the working status of catering companies anytime, anywhere, and provides convenient on-site operation platform tools for law enforcement and operation and maintenance.

remote control

After the user enters the website address, directly enters the interface in the above figure, you can remotely see the real-time monitoring data and its corresponding real-time current value. By controlling the lower button, you can remotely control the opening and closing of on-site fans and pumps and other controlled devices. The purpose of remote control by the user directly using the mobile terminal of the mobile phone is to effectively interact with humans and improve the work efficiency.


3.3 Project Construction Significance

(1) Social benefits

The fume concentration on-line monitoring system has solved the problem of cigarette smoke nuisance. The complaint volume will be reduced by 30%, which is conducive to fresh air in the urban environment and green and low-carbon life. As a result, the normal use of fume purifiers in catering industry companies has been significantly increased, and the promotion of employment has resulted in a more harmonious society.

The construction of on-line monitoring system for fume concentration is conducive to the administrative enforcement of environmental protection departments, the scientific assessment of the green environmental impact assessment of the catering industry, the increase in administrative revenues and expenditures, and the creation of both social and economic benefits, and the people’s livelihood is cold and inconsistent with the national policies and regulations.

The environmental protection administrative department may, for the future catering industry, collect waste gas discharge fees in accordance with the national sewage discharge fee collection standards. For pollutants discharged into the atmosphere, the pollutant discharge fee shall be calculated according to the type and quantity of pollutants discharged. With the improvement of urban life quality and rapid economic development, the catering industry has also been booming, and the country’s economic indicators and urban environment have been improved. Soot pollution is regarded as the first of the three major pollutions, so that responsibilities, improve environmental monitoring capabilities, and at the same time promote reduction The development of platoon work. The soot complaints caused serious disturbances to the people, which reduced complaints and resolved them completely.

(2) Economic benefits

As the main body of environmental protection administration, environmental protection agencies use new technology and technology to promote people’s livelihood and make society more harmonious. On-line monitoring of fume concentration has promoted social development, facilitated energy conservation and emission reduction, enabled the public to pay more attention to environmental protection, promoted environmental protection projects, and pursued low-carbon consumption. As the catering industry, it was also able to share revenues and formed a benign mutual support. Ecological cycle circle.

(3) People's livelihood highlights

The sky was blue, the gas was clean, the mountains were clear, and the water was beautiful. Once the smoke pollution became the green home now.环保执法以提高群众环境幸福指数为目标,全面开展环境整治,让城市摘掉了污染的帽子,让当地群众感受到了环境改善的欣慰。以拳拳之心为民,以环境保护来改善民生,保护环境的改善给我们提供了实践案例。监控油烟走出的这条经济增长、资源节约、环境友好、和谐发展的新路子,对很多地方来说,有着积极的借鉴意义。


第四章 餐饮业油烟在线监测项目前端设备建设内容 4.1油烟的产生

众所周知,油烟是指食物烹饪、加工过程中挥发的油脂、有机质及其加热分解或裂解产物。烹调时,食用油和食物在高温条件下,产生的大量热氧化分解产物,主要由细颗粒物和气态物质(挥发性和半挥发性有机化合物)组成,其中部分分解产物以烟雾形式散发到空气中,形成油烟。当温度达到食用油的发烟点170℃时,出现初期分解的蓝烟雾,随着温度继续升高,分解速度加快,当温度达250℃时,出现大量油烟,并伴有刺鼻的气味。

污染源主要来自燃料的燃烧和炒菜锅内的油烟气,产生的有害物种类多,毒性大,像CO、SO2、CO2、NOx、丙烷、丙烯、丁烷、丁烯、戊烷、硫化氢、烟尘、臭气、热气、多环芳烃及强致癌物(如苯并蓖、氡等),即使用些电炊具,也会产生大量的氮氧化。这些有害物的浓度大大超过国家规定的居民区大气卫生标准,少则3-5倍,多则100倍之多。

4.2油烟成分

油烟污染物成分比较复杂,既有油脂、蛋白质和原料等在受热条件下进行物理化学反应产生的有机烟气,也有加热操作过程中,油料物料液滴溅裂所分解、氧化、聚合的高分子化合物,再与燃烧烟气混合,形成气态、液态和固态的三类污染。

研究表明,油烟气组成化合物至少有300多种,其中含有多种有害化合物。油烟中主要有脂肪酸、烷烃、烯烃、醛、酮、醇、酯、芳香化合物和杂环化合物等,具体随所选用的烹调油种类、操作条件、操作规模及操作温度等的不同有很大差异。除此之外,厨房燃料在燃烧或不完全燃烧时也会产生大量的有害气体,如CO、CO2、NOx、SO2及颗粒物等。

4.3油烟排放的监管难度

目前全国各地对餐饮油烟污染的环境监测,大多数仍停留在手工监测阶段,时间覆盖率低,监测范围有限,难以反映较大区域内城市环境污染连续变化的情况,也难以达到实时监测、实时超标报警、无人值守的要求,且费工费时,严重影响了环保部门的办事效率和快速反应能力。

同时油烟净化器安装率不高,很多餐饮业没有严格通过环保行政机关环评。已成为社会难点问题,扰民问题特别严重,有利进一步督促和监管。

4.4现有的油烟监控方式优缺点

(1)早期油烟浓度在线监控系统:(属称第一代油烟浓度在线监控系统)

核心方法主要是监控风机和净化器的开关状态,只要风机和净化器是正常开启的,就简单的认为油烟排放也是正常达标的。

(2)当今的油烟浓度在线监控系统:(属称第二代油烟浓度在线监控系统)

核心方法是监控油烟净化器的运行电压、电流、功率、状态,以及油烟排放浓度是否超标,同时辅以监控风机和净化器的开关状态,根据这些参数的变化,以判别油烟净化设备的净化率和洁净程度,从而估算设备是否需要进行清洗,以及油烟排放是否达标。

(3)环保专家论证,第一代油烟浓度在线监控系统的优点描述,简单有效,防止餐饮企业不开启净化设备。能行之有效现场监控净化器的运行效率,通过监控净化器的运行电压、电流等参数,可判断净化器的运行状态并估算净化效率,及时提醒清洗和报警。

(4)环保专家论述,第一代油烟浓度在线监控系统缺点或不足,由于这些方法实际上采用的是设备监控和动力监控的原理,都不能测量油烟浓度,不能判别油烟浓度是否超标,因而不能有效的解决油烟扰民的监管问题,导致环保行政执法成本增加,不能解决油烟污染的根本问题。

4.5油烟浓度在线监控系统原理

在油烟的传感器测量方面,和多家国外专业气体传感器厂家进行了深入合作。根据提供的研究数据,对相关气体传感器的参数配置提出了特别的要求,生产厂家对气体传感器的参数配置进行了优化设计。同时,采用多个气体传感器一起协同工作,而每个气体传感器都针对油烟的一部分特性做了特别优化,当多个传感器一起协同工作时,就能有效测量油烟内包含的各种成分,从而保证了油烟浓度测量结果的准确可靠。RTU模块对油烟浓度探测仪采集到的各种油烟信号进行综合计算和分析,并根据国标测量结果进行校准后得到最终油烟浓度,结果准确可靠。

根据研究结果,各种不同菜系所生成的油烟浓度范围各不相同,油烟成分有很大区别,为了能够有效的测量油烟浓度,需要采用多个气体传感器进行协同工作,通过对多个气体传感器的采样结果进行综合分析,建立相对应的数学模型,才能够比较准确的计算出油烟浓度。实际应用中,需要根据不同的地域特色,针对不同的典型油烟特点,选用不同的传感器组合,以及对传感器的参数做不同的调校配置,配以不同的分析方法和数学模型,才能够得到最准确的计算结果。

根据GB 18483-2001《饮食业油烟排放标准》,油烟浓度的标准测量方法为红外分光光度法。此标准规定了油烟的含量测量方法主要是监测油烟中的有机成分,油烟浓度在线监控系统对油烟的研究都是以此标准为依据。

图4-1为示意图,以蓝色代表实际油烟各种成分和综合总量,红色代表标准油烟测量方法能够测量的范围,红色与蓝色的交集代表了标准测量方法的测量结果,绿色和黄色分别代表气体传感器,绿色和黄色各覆盖一部分蓝色,表示各能测量一部分油烟成分,同时也各与红色有一部分交集,表示各自的测量结果都与标准测量结果有相关性。最终得到的油烟浓度才能够更准确。



图4-1


图4-1很容易看出,使用单个气体传感器测量油烟浓度的误差会比较大,测量结果有很大的不确定性。即使在浓度相同的情况下,不同条件下产生的油烟成分区别也很大,而每一种气体传感器都有特定的气体种类探测范围,对每种可探测气体又有不同的敏感度和特征系数。这样,测量结果就会有比较大的分散性,对比标准油烟测量方法,就会出现对某些情况下产生的油烟测量比较准确,对另一些情况下产生的油烟测量结果出现较大差别,从而产生较大的误差。


由于气体传感器的测量通常与环境温度和湿度有关,因而在具体测量时常需要同时监测气体温度和湿度。为了准确计算浓度和油烟排放总量,还可能需要测量气压、风速、风量等参数。

4.6油烟浓度关键技术的应用

目前市场上可以选择的用于测量气体浓度的传感器型号、种类繁多,测量原理也多种多样,这就需要进行大量的实验进行测试研究。如Baseline-mocon的pid-tech gas sensor,其测量原理是:传感器主要由紫外线发光管和传感部件组成,气体进入传感器后,被紫外线照射并发生电离,电离后的气体成分被传感单元监测并转换成电压信号输出,电压值与VOC气体浓度总量(TVOC)成线性正比关系。又如3ETO的MICROpeL75 gas sensor,采用化学催化方法监测可燃气体。电化学气体传感器的工作原理是:采用具有催化活性的金属,如铂涂覆在一层透气但憎水的薄膜上作为电极,被测气体扩散透过多孔膜在其上进行电化学氧化或还原反应,通过电极的热力学电位与参考电极上的热力学电位之间产生电位差,对此电位差进行测量可以得到气体浓度。又如Figaro的TGS2600 gas sensor,其测量原理是:传感器主要由传感部件和加热部件构成,传感部件是一种金属氧化物半导体材料。加热部件在特定的电压和电流条件下,将传感部件加热到一定的高温,一般在300℃ - 500℃。这样,在特定的高温条件以及在有氧气作为介质的情况下,传感部件与气体发生作用,一般是气体从传感部件表面吸收氧离子并发生氧化,传感部件由于失去氧从而导致电阻值发生变化,一般是电阻值减小,通过测量此电阻值的变化,从而可以得知气体浓度。

4.7油烟浓度在线监控系统硬件构成


ZWIN-YY08油烟在线监测仪为ZWIN-YY06油烟在线采集器的升级版本,由采集器主体、显示屏、油烟探头三部分组成。采集器集成GPRS无线通信模块(可选CDMA),采用实时在线、自动上报的方式工作。采集器带有油烟探头专用接口,用于连接探头。采集器通过控制探头采集油烟原始数据,读取探头采集到的原始数据,并进行综合计算,最终得到油烟浓度值,也可在显示屏上直接查看数据。油烟在线监控系统由实时数据监测、历史数据查询、基础信息管理、用户信息管理等功能组成,支持通过GIS地图定位展示各餐饮企业的实时监测状态。

Technical Parameters

测量范围:0.0 ~ 4.0 mg/m 3

测量精度:±10%

测量周期:< 1min

工作电压:220VAC

功 率:8W

工作温度:–25℃~+75℃

工作湿度:5%~95%

采集器尺寸:φ45*270mm

探头尺寸:φ45 *10mm

产品特点

1、对餐饮行业的在线、信息化监管手段,提高了对分散型餐饮企业的集中管理的效率,降低环境监管部门的人员压力,并提高对餐饮企业的油烟排放信息、净化设施工作状态等信息掌握的全面及实时性。

2、远程控制功能:可接四路被控净化设备,监测并远程控制其开关状态,且具有受控设备过流保护系统,电流超过限值6s自动断开,安全可靠。(此功能为可选功能,用户可根据实际需求进行选择)

3、系统可靠性:油烟在线监测仪通过了环保认证,环保认证中对产品的功能、性能、安全性、耐环境能力进行了全面的测试,确保了油烟在线监测仪在餐饮企业现场应用的可靠性及安全性,满足环保局对餐饮行业油烟排放监管的需求。

4、支持“一主机多探头”模式,适用于餐饮企业集中区中一个餐饮企业有多个烟道的情况。

5、支持断点续传功能:当网络中断时监测数据可缓存到本地,待网络恢复后立即将数据补传至油烟监控平台,配合油烟监控平台的数据补遗功能,可保证数据在线率达到99%。

6、支持短信远程配置:支持通过手机短信的方式远程配置油烟在线监测仪的上报IP、端口号和上传时间间隔。

7、支持油烟探头具有防拆卸保护功能:当油烟探头进行非法拆卸时,系统自动发出报警信息,有效防止油烟探头的异常拆除。

8、通过对餐饮企业的监管手段的信息化建设,将有助于提高企业的环保责任主体意识,切实落实其环保责任。


4.8油烟浓度在线监测系统涉及技术

(1)油烟传感技术

油烟浓度探测器采用了专用的基于气敏组件的油烟传感技术,可以对油烟成分进行综合分析,从而得到量化、较准确的油烟浓度值,并可同时感知烟气温度、湿度及压力等信息,以便为油烟的扩散模型及对空气的污染程度分析提供参考数据。

(2)GPRS/CDMA/3G无线通讯技术

ZWIN-YY08油烟在线监测仪主机

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