Anthracite filter material is made of high quality anthracite as raw material, the selection of broken, powder, sieve process is widely used, such as double, three layers of filtering material quickly. Practical in general acid, neutral alkaline purification processing, has the good specific surface area, the indicators have reached the ministry of construction (CJ/T44-1999) standards. Anthracite filter material is a kind of filter with commonly used filter material, water treatment industry anthracite filter material widely used in chemical industry, metallurgy, thermal power, pharmacy, paper making, printing and dyeing, food, etc. In the process of the production water quality before and after treatment. With quartz sand filter material used is the promotion in double quick filter and three layer filter, filter to filter the best material, is to improve the filtering speed and improve the ability of sewage water yield per unit area and exponentially, lower the project cost and the most effective way to reduce cover an area of an area. Anthracite, quartz sand filter material in filter, when wastewater flow filter material layer, particle size of the larger particles are first interception in the gaps between the surface of filter material, so that the filter material of the gap is more and more small, cutting carrying capacity is becoming more and more high, so in order to improve the filtering efficiency of the filter layer, generally adopts double, three layers of filter material.