"Fourteen Five" Yellow River basin urban sewage waste treatment do so



Make up for the shortcomings, improve the level of operation management

"To control the Yellow River, the emphasis is on protection and governance." The relevant person in charge of the National Development and Reform Commission introduced that during the "13th Five-Year Plan" period, along the nine provinces (regions) of Huang, the investment in urban environmental infrastructure construction continued to increase, the urban sewage collection and treatment capacity gradually increased, the urban waste treatment capacity gradually increased, and the urban medical waste disposal capacity was basically made up, laying a solid foundation for a good pollution prevention and control battle. At the same time, the urban sewage and garbage treatment in the Yellow River basin still has the problem of insufficient and unbalanced development, prominent shortcomings of facilities, low level of resource utilization, weak operation and maintenance capacity, and imperfect mechanism and system, and there is still a certain gap with the requirements of ecological protection and high-quality development in the Yellow River Basin.

"Environmental pollution in the Yellow River basin is deep, and the water quality is generally worse than the national average." Gong Daoxiao, president of the Water Affairs Institute of the China Institute of Urban Planning and Design, said that during the "14th Five-Year Plan" period, ecological environmental protection in the Yellow River Basin was in a critical period and a window period, and opportunities and challenges coexist to promote urban sewage waste treatment.

In this regard, the "plan" proposed to speed up the shortcomings of urban sewage waste treatment facilities, improve the level of operation and management, effectively improve the performance of pollutant reduction, promote the utilization of resources, meet the people's growing needs for a better life and a beautiful ecological environment, and promote the ecological protection and high-quality development of the Yellow River Basin.

"Pay equal attention to construction and management" to improve the sewage waste treatment capacity

According to the plan, by 2025, the urban built-up area will basically eliminate the blank area of domestic sewage outfall and collection and treatment facilities, and the centralized collection rate of urban domestic sewage will reach more than 70%; The county sewage treatment rate reached more than 95%, and the sewage treatment capacity of established towns was significantly improved. By 2025, Taiyuan, Hohhot, Jinan, Tai 'an, Zhengzhou, Xi 'an, Xianyang, Lanzhou, Xining, Yinchuan 10 urban solid waste classification and treatment capacity will be further improved; Prefecture-level cities have basically built a system for classifying domestic waste for delivery, collection, transportation, and treatment.

The person in charge said that during the "14th Five-Year Plan" period, we should adhere to scientific planning and overall promotion, adapt to local conditions, make up for shortcomings, energy saving, low-carbon, green circulation, government-led, and pluralistic co-governance principles, and systematically promote the construction of urban sewage waste treatment facilities. In terms of improving the capacity of urban sewage collection and treatment, it is necessary to fill the shortcomings of sewage collection network and promote the full coverage of sewage network. Sewage treatment was promoted by different measures, and the sewage treatment capacity was increased by 3.5 million cubic meters per day. The harmless treatment of sludge has been implemented, and the scale of harmless disposal facilities has been increased by about 30,500 tons/day.

In addition, in terms of improving the urban garbage treatment system, it is necessary to improve the garbage classification and collection system, promote the classification and collection of domestic garbage, and increase the classification and collection capacity of domestic garbage by about 18,000 tons/day; Fill the gap in domestic waste treatment capacity, increase the domestic waste incineration treatment capacity of about 28,000 tons/day, increase the kitchen waste treatment capacity of about 8,000 tons/day, and upgrade no less than 70 existing domestic waste treatment facilities.

"During the '14th Five-Year Plan' period, urban sewage waste treatment in the Yellow River Basin was implemented with 'equal emphasis on construction and management', aiming at coordinating the high-quality construction and high-level operation and maintenance of facilities." The person in charge said that it is necessary to improve the assessment incentive mechanism, build the sewage waste treatment service quality index system, improve the pollutant reduction performance-oriented assessment incentive mechanism, and promote the operation service fee and the sewage treatment plant inlet pollutant concentration and pollutant reduction amount linked to the efficiency payment mechanism. At the same time, promote professional operation and maintenance, encourage the selection of operation and maintenance subjects through market competition; We will innovate operation management methods, encourage the integration of projects of different sizes and profit levels to grant franchise rights, and promote third-party governance of environmental pollution.

Hu Hongying, a professor at the School of Environment of Tsinghua University, believes that the sewage treatment of established towns should be steadily promoted, and the planning and construction of facilities should be guided by resource utilization. According to the principle of "according to demand and according to capacity", determine the process route and construction scale, avoid the problems of excess sewage treatment design capacity and low operating load, ensure the sustainable operation of sewage treatment facilities, and improve the operation efficiency of sewage treatment plants.

In Gong Daoxiao's view, the Yellow River ecosystem is an organic whole. Urban sewage waste treatment should fully consider the differences between the upper, middle and lower reaches, adhere to local conditions, classification policies; At the same time, it is also necessary to focus on the integrity, correlation and systematism of the basin, and coordinate the promotion of urban sewage and garbage treatment.

Reduce pollution and carbon, and improve the level of resource utilization

The "plan" requires strengthening the utilization of resources, promoting the utilization of sewage resources, carrying out pilot demonstrations, and building, rebuilding and expanding the production capacity of recycled water of about 3 million cubic meters/day; Do a good job in reducing, stabilizing and harmless sludge, and steadily promote the utilization of sludge resources; We strengthened the resource utilization of domestic waste, and built 50 new projects for the resource utilization of domestic waste.

Hu Hongying suggested that to improve the level of sewage resource utilization, existing sewage treatment plants should be upgraded and renovated, and recycled water that meets relevant standards should be used in the nearest ecological water supply, industrial utilization and municipal utility. Distributed sewage treatment and recycling facilities should be rationally distributed, and mass water supply and point-to-point water supply should be implemented. Promote the transformation of sewage treatment plants from "single function of pollution control" to "dual function of pollution control and water supply", and ensure that sewage treatment plants obtain reasonable "economic benefits of water supply" through flexible mechanisms such as government purchase of ecological water replenishment services and market pricing of recycled water.

"The utilization of sewage resources is a systematic project that needs overall planning and coordinated promotion." Hu Hongying said that we should take the pilot demonstration as an opportunity to promote the planning and construction of regional renewable water recycling systems; Promote the deep integration of industry, university, research and application, research and development, and integrated verification of a number of complete sets of technologies for the utilization of sewage resources; Explore and improve the policy system, standard system, evaluation and certification system, market incentive system and supervision and management system, etc., to form a system, mechanism and sustainable model of sewage resource utilization that conform to the characteristics of the Yellow River basin and adapt to the stage of economic development.

In addition, Gong Daoxiao said that the Yellow River basin is an important energy base in China. During the "14th Five-Year Plan" period, we should promote synergies in reducing pollution and carbon, reduce energy consumption, reduce environmental impact, and help achieve the goal of carbon peaking and carbon neutrality.