It is reported that China will promote industrial park circulation reform, efforts to achieve the main pollutant "zero emissions" or "zero emissions". Back flush filter was make effectively solve the problem.

　　Back flush filter is involved in the process of pipeline filter. Back flush filter can by using the mesh will be suspended solids in water, particulate matter, such as bacteria and algae effectively intercept harmful substances, so as to achieve the purpose of purifying water, improve water quality. After back flush filter treatment of water quality up to the national wastewater discharge standard, effective protection of water resources and the environment. Back flush filter has the stable discharging water, low operating cost, cover an area of an area small, long service life, etc.

　　The use of the back flush filter:

　　Back flush filter has a compact structure, great capacity, small pressure loss, wide applicable range, convenient maintenance, etc., the main applicable materials are:

　　1, chemical industry, petroleum and chemical production in weak corrosive materials, such as: water, oil, ammonia, hydrocarbons, etc.

　　2, chemical corrosion in the production of materials, such as: caustic soda, soda ash, thick dilute sulphuric acid, carbonic acid, hyaluronic acid, etc.

　　3, low temperature of cooling material, such as: liquid methane, ammonia, oxygen and various cooling agent.

　　4 there is a requirement for health, food, pharmaceutical production materials, such as: beer, beverage, dairy products, syrup, etc.

　　Under the effective governance of the pipeline filter processing, industrial park wastewater efficiently achieved zero emissions.