At present, in mainstream rural areas, the effluent of Grade B is expected to be 1 1,000/ton, and the effluent of Grade A is higher. In fact, there are different types of equipment in Japan, and there are also many integrated sewage treatment equipment in industry and medical care. There are many such devices in Jiangsu and Zhejiang, so it is recommended to consult more environmental protection equipment manufacturers. Listed companies and state-owned enterprises do not recommend that their equipment is generally more expensive than that on the market. It is a good choice to find some private enterprises with better strength.