Guiding opinions on promoting the resource utilization of sewage

(5) Actively promote the resource utilization of industrial wastewater. Carry out water audit, water efficiency standard and water-saving transformation of enterprises, promote the recycling of industrial water use within enterprises, and increase the reuse rate. Promote the integration and optimization of water use systems among enterprises in the park, and realize serial water use, differentiated water use, multi-use of one water and cascade utilization. We will improve the construction of wastewater treatment facilities in industrial enterprises and parks, improve operation and management, and ensure that industrial wastewater is discharged up to standards. We will carry out water quality monitoring, evaluation and water management for the recycling of industrial wastewater, and encourage local and key water enterprises to build smart management platforms for the recycling of industrial wastewater.

6. We will prudently promote the utilization of agricultural and rural sewage resources. Actively explore in line with the rural reality, low-cost rural domestic sewage treatment technology and model. According to the regional location and population concentration, household treatment, village group treatment and inclusion in urban sewage network collection and treatment methods are selected, and modular technology combining engineering and ecology is promoted to promote the nearby and local resource utilization of rural domestic sewage. Promote the combination of planting and breeding, promote the use of treatment methods, adopt economical fertilizer and energy treatment technology to promote the utilization of livestock and poultry waste resources, and encourage the recycling of fishery aquaculture tail water.

3. Implementing key projects for the utilization of sewage resources

(7) Implementation of sewage collection and resource utilization facilities construction projects. Promote the full coverage of urban sewage network, increase the construction of urban sewage collection network, eliminate the blank area of the collection network, and continue to improve the efficiency of sewage collection. Accelerate the construction of sewage collection branch pipe networks and outdoor pipe connections in urban villages, old and old urban areas, and replenish the "capillaries". We will focus on repairing damaged urban sewage networks, upgrading old ones, and upgrading mixed and misconnected urban sewage networks, and gradually improve the diversion of rain and pollution. In key river basins, water-scarce areas and water-sensitive areas, upgrading and capacity expansion of existing sewage treatment facilities will be implemented in light of local water resource endowments and water environmental protection requirements, and sewage resource utilization facilities will be built according to actual needs. New urban areas of water-scarce cities should be planned and distributed in advance according to local conditions, and related construction should be carried out in an orderly manner. Actively promote the construction of harmless sludge resource utilization facilities.

(8) Implementing regional reclaimed water recycling projects. We will promote the construction of a comprehensive treatment system that integrates pollution control, ecological protection, and recycling. Facilities for water purification in constructed wetlands will be built according to local conditions at key points such as downstream of key sewage discharge outlets, at the mouth of a river entering a lake (sea), and at the point where the river flows into the main stream. After further purification and improvement of the discharged and slightly polluted river water that meets the treatment standards, they will be incorporated into the regional water resources allocation management system. It can be used for ecological water replenishment, industrial production and municipal utility in the region. We will actively carry out pilot demonstrations of regional recycled water recycling in water-scarce areas.

(9) Implementing industrial wastewater recycling projects. In water-scarce areas, municipal reclaimed water is regarded as an important source of water for industrial production in the park, and the amount of new water taken is strictly controlled. Promote the cooperation between industrial parks and municipal reclaimed water production and operation units, and plan and equip pipe network facilities. Select areas with severe water shortage to create innovative pilot projects for efficient recycling of wastewater from industrial and urban integration. Where conditions permit, industrial parks should coordinate the comprehensive treatment and resource utilization of wastewater, establish point-to-point water use systems between enterprises, and realize the recycling and graded reuse of industrial wastewater. Focusing on high-water consumption industries such as thermal power, petrochemical, iron and steel, nonferrous metals, paper making, printing and dyeing, organize the utilization of wastewater within enterprises, create a number of industrial wastewater recycling demonstration enterprises and parks, and drive enterprises to improve water efficiency through typical demonstrations.