With the continuous progress of China's economy and urbanization, urban domestic sewage has become the main source of increasing wastewater discharge in China. According to the "Thirteenth Five-Year Plan for the Construction of Urban Sewage Treatment and Recycling Facilities" and "Thirteenth Five-Year Plan", 42.2 million cubic meters per day of urban sewage treatment in China will be revamped. Among them, urban water consumption and sewage production in economically developed areas are large, so the upgrading of these areas is in the forefront, which opens up a huge space for market development. At the same time, "Water Ten Articles" require that by 2020, all counties and key towns in the country have the capacity of sewage collection and treatment. The sewage treatment rates of counties and cities reach about 85% and 95% respectively. There is a huge demand for upgrading urban sewage standards.

Electro-flocculation treatment of wastewater is a decontamination process that uses aluminium or iron anode to dissolve and in-situ produce highly active polyaluminiumor polyferric flocculants, which can agglomerate pollutant particles in water and separate them by sedimentation or air flotation. With the advantages of high efficiency, small sludge content, easy solid-liquid separation, no need of additional agents, less secondary pollution, simple operation and equipment maintenance, easy automatic control and small total solidification (TDS) in final effluent, electroflocculation has gradually become an effective method to treat inorganic and organic wastewater such as heavy metals, fluoride ions and dyes.www.khnwatertreatment.com