Methods for reducing pollutants in river water bodies and improving water quality

Abstract

The invention discloses a water pollutant reducing and water quality improving method for a river. The method comprises the following steps: overflow dams are arranged in a segment manner for a to-be-governed river according to requirements, to-be-governed water in the river is lifted by a pump to an energy-saving filtering device and a subsurface constructed wetland arranged at a bank, and meanwhile, integrated ultrafine dissolved air dialysis equipment is adopted in the river to treat the river water.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a method for reducing pollutants in river water bodies and improving water quality. Background technique [0002] With the construction of the city and the development of industry, at the same time, due to the imperfect infrastructure of the old urban area, the construction of the urban pipe network lagging behind, and the incomplete diversion of rain and sewage, etc., a large amount of industrial wastewater, domestic sewage, initial rainwater, domestic garbage, and construction waste have been caused. Garbage, humus vegetation, agricultural non-point sources and other pollutants poured into the river, and the river became a sewage container for sewage, which caused serious damage to the river ecosystem over time, and the self-purification function was difficult to restore. According to statistics, more than 80% of the rivers in my country have been ...

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Problems solved by technology

[0002] With the construction of the city and the development of industry, at the same time, due to the imperfect infrastructure of the old urban area, the construction of the urban pipe network lagging behind, and the incomplete diversion of rain and sewage, etc., a large amount of industrial wastewater, domestic sewage, initial rainwater, domestic garbage, and construction waste have been caused. Garbage, humus vegetation, agricultural non-point sources and other pollutants poured into the river, and the river has become a sewage container, which has caused serious damage to the river ecosystem over time, and the self-purification function is difficult to restore

According to statistics, more than 80% of the rivers in my country have been polluted for a long time, and many of them even have seasonal and perennial black and odorous water bodies, resulting in the loss of water ecosystems, the extinction of fish and shrimp, seriously affecting the image of the city and the environment, and inhibiting the local environment. economic development

[0003] At present, the methods of improving river water quality at home and abroad are mainly through water change, water diversion dilution, plant floating island purification, adding chemical agents and biological agents, etc. The above methods can only be used to change river water quality in a short period of time in an emergency, and have great limitations.

Especially in the water-scarce areas in northern my country, it is difficult to achieve water exchange and water diversion dilution. The plant floating island purification is greatly affected by temperature, the effect is slow, the maintenance workload is heavy, and the addition of chemical agents will cause secondary pollution to the river. Therefore, the above method is very difficult. It is difficult to fundamentally solve the problem of river water pollution

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