Ecological prevention and control method of non-point source pollution

Abstract

The invention discloses an ecological prevention and control method of non-point source pollution. According to the invention, through reasonable plant space arrangement and plant configuration method, the surface runoff time can be effectively increased by 1.0-1.8 times; and through the processes of plant absorption, interception and adsorption, soil microorganism degradation and the like, suspended matter can be reduced by 52.9-73.2%, total nitrogen can be reduced by 40.4-23.6% of, and total phosphorus can be reduced by 41.2%-32.8%. An effect of controlling surface source pollution is effectively achieved, ecological benefits can be effectively exerted, and meanwhile, a good landscape aesthetic function is achieved. The method is simple and feasible, construction cost and operation costare both low, plant diversity of a water environment is enriched, and the method is suitable for being popularized in southern water environment protection areas.

Description

Technical field: [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for ecological prevention and control of non-point source pollution. Background technique: [0002] With the continuous deepening of human economic activities, water pollution has become a global environmental problem, which has been highly valued by the environmental protection departments of governments. Traditionally, water environmental pollution sources are divided into point sources (PS for short) and non-point sources (NPS for short) according to the type of pollution. Point sources usually have a fixed discharge location or a sewage outlet, and are discharged in a centralized manner, such as industrial wastewater and domestic sewage. Non-point sources include line sources and area sources, that is, pollution discharge sources that discharge discontinuously into the environment and cannot obtain water quality improvement by general s...

AI Technical Summary

Problems solved by technology

Non-point sources include line sources and area sources, that is, pollution discharge sources that discharge discontinuously into the environment and cannot obtain water quality improvement by general sewage treatment methods, produced by rainfall, surface runoff, drainage, seepage or atmospheric deposition, in Into surface water and groundwater in a large range and enriched in large quantities, leading to water pollution

Compared with point source pollution, non-point source pollution has scattered sources, wide distribution area, difficulty in identifying the location of occurrence, strong randomness, complex causes, and long incubation period

Practice has shown that the water quality compliance rate of various water bodies is still unsatisfactory with the simple control of point source pollution. The main source of pollution has become a major problem that plagues my country's environmental protection and governance. Moreover, with the continuous enhancement of my country's economic strength, the scope of non-point source pollution of the water environment is also increasing, which in turn causes eutrophication and pollution of water bodies. Adverse effects of drinking water source and reducing water body function