2. The necessity is mainly from the regional perspective, which can be proved by discussing the impact of our production and domestic wastewater on the surrounding water environment without sewage treatment plants.

The site selection of sewage treatment plant should match the wastewater outlet, consider the needs of the phased construction of the whole drainage system, and obey the urban land use planning. Sewage treatment plants, especially those with sludge treatment and dehydration equipment, have a certain impact on the environmental quality of surrounding houses.

There should be an appropriate isolation green belt. Developed computing technology makes the economic analysis of drainage system planning more and more perfect, and the choice of sewage plant site is often solved at the same time as the planning of the whole system.

Extended data:

Waste water treatment site:

It is also called sewage treatment plant or sewage plant in the city. It is often called a processing station located in a factory. When sewage enters the urban drainage pipeline, the treatment station is actually a pretreatment facility. The general goal of wastewater treatment is to remove suspended solids and increase oxygen consumption (that is, to stabilize organic matter), and sometimes disinfection and further treatment are carried out.

The treatment of industrial wastewater focuses on removing or transforming oils, suspended solids, heavy metals and organic substances that hinder the operation of urban sewage plants or have high residues, and adjusting pH value.

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