Problems in the utilization of sewage resources

Countermeasures and suggestions for improving the level of sewage resource utilization

(1) Actively promote industrial recycling of waste water

(1) Industrial water should be prioritized to use urban reclaimed water. In water-scarce areas, industrial enterprises and parks should cooperate closely with urban reclaimed water production and operation units, plan and equip pipe network facilities, and use reclaimed water as the priority water source and the first water source for industrial water. Relatively dispersed coal mine water can be collected centrally, and if necessary, natural ditches can be used for temporary storage to avoid discharge into the river, resulting in waste.

(2) Vigorously promote the recycling of industrial wastewater. Promote the integration and optimization of water use systems within and between enterprises in industrial parks, and realize serial water use, differentiated water use, multi-use and recycling of water. We will promote the monitoring and evaluation of water quality and the construction of a water management system for industrial recycling of waste water. Comprehensive integration and demonstration of water recycling technology will be carried out in typical areas, and demonstration models will be created for the coordinated efforts of wastewater recycling technology, engineering and services, management, and policies.

2. Accelerate the ecological and environmental utilization of urban sewage

Areas with conditions can make full use of urban sewage in adjacent industrial areas. The quantity of urban sewage is large, the quality is stable, the utilization potential is huge, and the potential benefit is remarkable. In recent years, the construction of sewage treatment facilities in China has developed rapidly, and the treatment capacity and effluent quality have been continuously improved, laying a good foundation for the utilization of recycled water. Therefore, the Guiding Opinions require that all regions rationally lay out the infrastructure for the utilization of recycled water on the basis of existing sewage treatment plants; New urban areas in cities with severe water shortage should be adapted to local conditions, plan and layout the reclaimed water pipe network in advance, and carry out construction in an orderly manner. At present, the effluent quality of most urban sewage treatment plants in China is good, especially the main water quality indicators such as chemical oxygen demand, ammonia nitrogen and total phosphorus, which can fully meet the requirements of industrial water intake.

3. Strengthen scientific and technological support and improve the standard system

We will strengthen scientific and technological support for the utilization of sewage resources. Strengthen the basic research on the risk and control of sewage resource utilization, and develop the theory and method system of standard formulation of recycled water utilization; Research and development of integrated low-cost, high-performance waste water recycling and treatment technologies, processes and equipment. We will improve the standard system for the utilization of sewage resources. Research on statistical methods and systems of sewage resource utilization, evaluation methods and norms of sewage resource utilization benefits, and form a scientific and unified statistical system. We will accelerate the formulation of technical specifications and risk management standards for the ecological and environmental utilization of recycled water, and gradually formulate and revise standards for the classification and quality of sewage resource utilization, evaluation standards and supervision standards.

4. Accelerate the promotion of environmental pollution treatment model

Professional company management is the general direction. The third party treatment of environmental pollution has become a new model of pollution control, that is, from "who pollutes, who governs" to "who pollutes, who pays". According to the requirements of the Notice of the General Office of the Ministry of Ecology and Environment of the National Development and Reform Commission on In-depth Promotion of third-party Environmental Pollution Management of the Park (Environmental Information (2019) No. 785) document, the Park is encouraged to carry out third-party governance through the declaration of the provincial Development and Reform Commission, the ecological environment department, and the expert review of third-party institutions. We will guide the active participation of social capital and establish a new mechanism of payment based on performance, third-party governance, government supervision and social supervision. Innovate the governance model, standardize the treatment and disposal methods, enhance the processing capacity, and realize the continuous improvement of the environmental quality of the park; Innovative policy guidance, explore long-term supervision mechanisms for pollution control in the park, promote the "marketization, specialization, and industrialization" of third-party governance, improve the overall level of pollution control and pollutant emission control in the park, and form replicable and popularizable practices and successful experiences.