Electrolysis Air Floatation and Dispersion Air Floatation Equipment Analysis

Introduction: In the water, a large number of micro-bubbles are introduced into the air, so that the air is attached to the suspended particles in the form of highly dispersed micro-bubbles, resulting in a density lower than that of water. The buoyancy principle is used to make it float on the water, thereby realizing solid-liquid. Separated water treatment equipment - air flotation equipment plays an important role in our daily production and life. Join Xiaobian today to study two small branches of air floatation equipment: electrolysis air floatation equipment and diffuse air flotation equipment!

1. Electrolysis floatation equipment

Electrolytic flotation equipment is used to directly electrolyze waste water using incompatible anodes and cathodes under the action of direct current. Micro-bubbles of hydrogen and oxygen generated by the electrolysis process float the flocculated suspension to the surface of the water, thereby allowing a solid-liquid separation flotation device.

The bubble diameter produced by the electrolysis flotation device is approximately between 10 μm and 60 μm, and the turbulence of the water flow is not caused during the bubble floatation process, and is suitable for the separation of fragile flocculates. In addition, electrolysis air flotation also has the functions of reducing BOD, oxidizing, decolorizing and sterilizing, and has strong adaptability to the change of waste water load. The amount of generated sludge is relatively small, the area is small, and there is no noise. The commonly used treatment water is generally 10-20 cubic meters per hour. Due to high power consumption, complicated operation and operation management, and electrode fouling, electrolysis flotation equipment is not generally used in applications where the amount of water is large.

2, bulk gas flotation equipment

The diffused air flotation device draws in air by using the vacuum negative pressure created by the centrifugal force generated by the high-speed rotating impeller, and forms fine air bubbles to diffuse into the water. As the bubbles rise from the bottom of the pool to the surface of the water, the suspended solids in the water are brought together to the surface of the water. In order to achieve the solid-liquid separation of air flotation equipment.

The flotation time of the air flotation equipment is about 30 minutes, and the amount of dissolved air is 0.51m3/m3 (gas/water). The peripheral speed of the rotating impeller is approximately 12.5 meters/second. Mainly used in small-scale sewage treatment projects such as paint, oil refining, dairy processing, fiber production, paper making, food and beverage, slaughter, textile, machining, and municipal sewage. Because the mechanical shear force of the water flow and the diameter of the bubbles generated by the diffuser plate are as large as about 1 mm, it is not easy to adsorb the fine particles and the flocs, but it is easy to break the flocs. Therefore, the air flotation is not suitable for air diffusion. Treatment of wastewater containing fine particles and flocs.