Thinking and suggestions on the problem of wastewater treatment resource utilization

The "Opinions" proposed that conditional industrial parks should be encouraged to plan 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.

We will encourage the implementation of scientific and technological innovation pilot projects for near-zero sewage discharge. Select representative national high-tech industrial development zones to carry out comprehensive integration and demonstration of technologies, develop and integrate low-cost, high-performance industrial wastewater treatment technologies and equipment, and create demonstration models of sewage resource technology, engineering and services, management, and policies.

Basic principles of sewage resource utilization

Sewage resource utilization includes renewable water utilization, resource recycling and energy conversion and utilization, which needs overall research, overall planning and coordinated promotion. The utilization of recycled water should adhere to the basic principles of "water saving priority, overall promotion" and "according to local conditions, classified policies".

1. Give priority to water saving and promote it as a whole.

The utilization of recycled water is an important part of water-saving work, and it should be included in the unified allocation of water resources, the formation of a scientific and reasonable price mechanism and incentive policies, and the overall promotion of the utilization of sewage resources.

2. Adopt policies according to local conditions and categories.

Different from the drinking water system that supplies water according to unified water quality, the utilization of recycled water should adhere to the quality, quality, demand, and quality control. Different regions should scientifically and accurately determine key areas, ways and modes of utilization according to their respective water resources, water environmental endowments, development needs and economic and technological levels.