China's urban water shortage phenomenon began in the 70 s, after expanded year by year, especially since the reform and opening, city water shortage is becoming more serious. According to statistics, in 663 incorporated cities in the country, there are 400 urban water supply is insufficient, of which 110 severe water shortage, water shortage about 10 billion cubic meters, affect the industrial production of about 200 billion yuan a year. With the speeding up of city, city water shortage has become a month of a big problem of urban development, how to better solve the problem of urban water shortage is one of the important ease our economic development.

　　Back flush filter in sewage treatment effect is remarkable. Water in the treated water quality stability, has been widely recognized. Back flush filter is used, to a certain extent, alleviate the situation of our country's urban water. With huaibei economy high speed development, the urban scale expands unceasingly, water resource shortage problem increasingly highlight, if just rely on the limited groundwater resources to meet the increasing water consumption, causing irreversible damage to the ecological environment. Sewage treatment plant a wide range of construction and the automatic filter large range applicable to the sewage treatment capacity.

　　Thus greatly save the available water resources in our country, but also to protect the water environment of our country. Sewage recycling improved utilization of water resources, but also reduces the production cost, so back flush filter is favored by many enterprises. Self-cleaning filter for the treatment of water pollution and promote the recycling of water, this phase will become the peak water treatment market investment. The widespread use of water filter can largely alleviate water problem in China.