Method for processing agricultural running water pollution by utilizing bank and compound system for processing running water pollution

Abstract

The invention discloses a method for processing agricultural running water pollution by utilizing bank and a compound system for processing running water pollution. A multi-level infiltration bed is constructed at the lower end of an agricultural running water converging channel along the bank from top to bottom, and consists of aquatic plants at the upper part and fillers at the lower part, a sand settling-buffering tank is arranged in front of each level of infiltration bed for settling sand, after the sand settling process, running water enters the infiltration bed for infiltration process, and the running water processed by a multi-level sand settling-infiltrating system is finally discharged into soil or water body by a water outlet area at the tail part of the system. In the invention, the bank is fully utilized for buffering water flow impact, water inlet quality is homogenized, and the purifying effect of running water pollutant is improved. Besides the traditional advantages of simple construction, convenience in operation and management, low cost and the like, the invention also has the advantages of no energy consumption, difficult blockage, small investment, convenience in operation and management, and strong anti-impact and anti-load capability.

Description

technical field [0001] The invention relates to runoff pollution treatment technology, in particular to a method for controlling agricultural runoff pollution by using slope banks and a compound system for controlling runoff pollution designed based on the method, belonging to the fields of municipal environmental protection and agricultural engineering. Background technique [0002] Runoff pollution refers to the leaching and scouring of rainfall runoff, the pollutants in the atmosphere, ground and soil diffusely enter the surface water and groundwater to cause water environment pollution, mainly originating from the extensive use of chemical fertilizers and pesticides in the agricultural production process , soil erosion, livestock manure, urban runoff, and deforestation. Rainfall runoff pollutants include: chemical fertilizers, pesticides, and herbicides in agricultural runoff; petroleum and toxic chemicals in urban surface runoff; water and soil particles from constructi...

AI Technical Summary

Problems solved by technology

[0004] Since the birth of the traditional infiltration system, there have always been the following deficiencies: ①Low hydraulic load: Under high hydraulic load, the infiltration system has a very limited effect on the removal of pollutants. Generally speaking, in order to achieve a better treatment effect, Hydraulic loads should be kept low

In rainfall or farmland irrigation, runoff pollution often changes greatly in water quality and quantity, resulting in fluctuations in hydraulic load, which limits the development and application of this process

②Single flow state: At present, most infiltration systems adopt a single flow state, such as horizontal flow or vertical flow. vertical flow

A large number of research results have found that the treatment effect of the infiltration system is often high in the initial stage of operation, and as the treatment time increases, the treatment effect gradually decreases

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