1. Basic principles
Air flotation is the generation of a large number of fine air bubbles in the dissolved gas system, making the air adhere to the suspended particles in the form of highly dispersed micro bubbles, resulting in a density lower than that of the water. It uses the principle of buoyancy to float on the water surface to achieve solid- Liquid separation water treatment equipment.
Air flotation is divided into super efficient shallow air flotation, vortex concave air flotation and advection air flotation. It is currently used in water supply, industrial wastewater and municipal wastewater treatment.
Shallow ion air flotation consists of the body of the air floatation tank, the water distribution bucket mechanism, the sludge bucket mechanism, the rotating frame mechanism, the water distribution pipe mechanism, the skimmer mechanism, the water level adjustment mechanism, the clean water outlet mechanism, the drive and skimmer mechanism, and the rotating current collector. , Electric control box, walkway board, guardrail, accessories and micro-oxidation strong dissolved gas system, micro-bubble generation system and other components.
The successful application of shallow ion air flotation comes from the close cooperation of experts from China, the United States and Germany, and has been praised by experts and users in the international environmental protection field. Its leading product, the CQJ type super efficient shallow ion air floatation equipment, is known as A proud achievement in the field of international environmental protection. In China, it has been rated as a high-tech product and a product recommended by the Ministry of Environmental Protection, and has been included in the Spark Program of the National Ministry of International Affairs, enjoying national financial support. Its projects cover wastewater treatment in various industries such as papermaking, pulping, printing and dyeing, seawater desalination, municipal administration, slaughtering, petroleum, chemical, food, tanning, pharmaceutical, brewing, electroplating, beneficiation, coalification and other industries. There are more than 3,000 large-scale projects in the world, and more than 7,000 polymorphic devices are running. Its removal rate of COD can reach more than 90%, and the removal rate of chromaticity can reach more than 95%, and the dosage of PAC drugs can be reduced by more than 150PPM compared with ordinary shallow air flotation, or no need to be added.
The advantage of air flotation is that its solid-liquid separation equipment has the characteristics of less investment, small footprint, high degree of automation, and convenient operation and management.