the sewage in the sewage generating unit; Limits on the quantity or concentration of pollutants discharged into the atmosphere.

By constructing and transforming the sewage pipes in sewage generating units such as factories, enterprises, institutions, state organs, hotels, restaurants and residential quarters on both sides of the river, they will be connected to the sewage pipe system laid under urban roads nearby and transferred to urban sewage treatment plants for centralized treatment.

emission standard of air pollutants: the limit standard for the quantity or concentration of pollutants discharged into the atmosphere in order to control the emission of pollutants and make the air quality meet the environmental quality standards. Approved and promulgated by the relevant departments, it is legally binding. In addition to the standards promulgated by the state, all localities and departments can also realize the feasibility of emission standards at a certain economic level according to the local atmospheric environmental capacity, the distribution of pollution sources and regional characteristics, and formulate emission standards suitable for their own regions and departments.

Extended information:

Requirements of integrated wastewater discharge standards:

1. The people's governments of provinces, autonomous regions and municipalities directly under the Central Government may formulate local pollutant discharge standards for projects that are not specified in the national pollutant discharge standards, and for projects that have been specified in the national pollutant discharge standards, they may formulate local pollutant discharge standards that are stricter than the national pollutant discharge standards.

2. Industry standards At present, China allows 12 industrial categories, such as paper industry, shipbuilding industry, offshore oil development industry, textile dyeing and finishing industry, meat processing industry, iron and steel industry, synthetic ammonia industry, aerospace propellant industry, weapons industry, phosphate fertilizer industry, caustic soda industry and PVC industry, without implementing the national comprehensive wastewater discharge standard, and the corresponding industry standards can be implemented.

Baidu Encyclopedia-Sewage Interception and Receiving Pipe

Baidu Encyclopedia-Emission Standard of Air Pollutants