"14th Five-Year Plan" urban sewage treatment and resource utilization Development planning

Discharge, avoid water discharge into the sewage collection system, crowding out the sewage collection and treatment space, increase

Increase energy consumption.

About the systematic renovation of the area. Biochemical oxygen demand (BOD) of inlet water from municipal sewage treatment plant

If the concentration of (BOD) is less than 100 mg/L, the system should be investigated around the service area pipe network

The causes of low intake concentration, scientific determination of water quality improvement objectives, the development and implementation of "a plant

The "One policy" systematic treatment plan steadily improves the efficiency of sewage collection and treatment facilities.

On pollution control of combined flow control. The combined drainage area adopts the source according to local conditions

Reconstruction, overflow port reconstruction, interception well reconstruction, damage repair, pipe replacement, additional adjustment

Engineering measures such as storage facilities and diversion transformation of rain and pollution can reduce the overflow pollution of the combined pipe network in rainy season

Improve rainwater discharge capacity and reduce the risk of urban waterlogging.

About pipe network construction quality control. Strengthen the whole process of pipe network construction quality control, pipe

The material should be durable and applicable, the pipeline foundation should be supported, the pipeline interface should be tight, and the trench backfill should be

Tightness, tightness check should be standardized. Speed up the elimination of brick Wells, promote concrete cast-in-place or

Finished product inspection Wells, promoting ductile iron pipe, socket rubber ring interface reinforced concrete pipe, etc

Pipes.

(2) Strengthen the weak points of urban sewage treatment facilities and improve treatment capacity

1. Construction tasks. Cities and counties where existing sewage treatment capacity cannot meet demand,

We will speed up efforts to fill gaps in processing capacity. The new urban area should promote sewage collection synchronously with urban development

Construction of collective processing facilities. The construction scale of sewage treatment facilities in large and medium-sized cities can be appropriately exceeded

Before. Beijing-tianjin-hebei, Yangtze River Delta, Guangdong-Hong Kong-Macao Greater Bay Area, along the South-to-North Water Diversion Project, the Yangtze River

Economic belt cities and counties, cities along the main stream of the Yellow River to achieve centralized treatment of domestic sewage

Full force coverage. Overall planning, orderly construction, and steady promotion of municipal sewage treatment facilities

Construction, appropriate reserve space for development, centralized if appropriate, scattered if appropriate. Speed up

We will improve sewage collection and treatment capacity in key towns along the Yangtze River Economic Belt. Yangtze River basin and south

In local areas, classified measures should be taken to reduce the overflow pollution of the combined pipe network, and the combined system should be promoted according to local conditions

Construction of rapid purification facilities for overflow sewage. During the "14th Five-Year Plan" period, the sewage treatment capacity was added

20 million cubic meters per day.

2. Technical requirements.

About the layout of sewage treatment facilities. Take full account of urban population size, nature and land

Management conditions, spatial layout and industrial development, as well as sewage collection network construction and sewage resources

Source utilization needs, reasonable planning of urban sewage treatment plant layout, scale and service pattern

Wring. Densely populated areas with large sewage discharge should be mainly treated in a centralized manner

Areas with few mouths, relatively dispersed, and difficult to cover by centralized treatment facilities in the short term

It is necessary to construct distributed and miniaturized sewage treatment facilities. The organized towns were adapted to local conditions and adopted nearby

Centralized joint construction, city side takeover and other ways to build sewage treatment facilities, promote the "biological + ecological" sewage treatment technology.

Discharge standards for sewage treatment plants. Cities of Yangtze River Delta and Guangdong-Hong Kong-Macao Greater Bay Area, Beijing

Cities at prefecture level and above along the Tianjin-Hebei, Yangtze River main stream and South-to-North Water Diversion project, Yellow River basin

Provincial capital cities, separately planned cities can put forward stricter pollutants for urban sewage treatment plants

Emission control requirements. The treatment of wastewater in water environment sensitive areas has basically reached the Grade A discharge standard

Allowed. In other areas, emission standards are scientifically determined according to local conditions, and it is not appropriate to blindly raise standards. Close

Sewage plants in residential areas and environmentally sensitive areas should build deodorization facilities and ensure deodorization effect.