sewage disposal

Sewage treatment is the process of purifying sewage to meet the water quality requirements of drainage or reuse. With the increasing shortage of water resources and the aggravation of water pollution, sewage treatment has become an important way of water resources protection, and there are many kinds of sewage treatment processes. Physical, chemical or biological treatment methods can be used to purify the sewage. The effective way of sustainable utilization of water resources is to use water resources reasonably, make the water circulation in the upstream area not affect the water body function of the downstream area, social circulation not damage the objective law of natural circulation, so as to maintain or restore the good water environment of the city and even the basin.