Device for improving water quality of black and smelly river

Abstract

The invention discloses a device for improving the water quality of a black and smelly river. Floating objects in water are intercepted by a filtering plate, so that diffusion of the floating objectsalong with water flow is avoided and salvage of the floating objects is facilitated. After the device is arranged in the river, a root system of a purifying plant penetrates through a planting layer and a lining frame to stretch into the water to form an aerobic microbial environment to perform primary purification on the water; and the primarily purified water is immersed into the planting layerin an overflowing form to be purified by the combined medium and the purifying plant for the second time, and then overflows to the other side of an overflowing plate through an overflowing port. Therefore, the water is purified by the root system and the root part of the purifying plant as well as the combined medium after passing through the filtering plate, and the purifying plant can absorb and block peculiar smell. The water which overflows through the overflowing plate is purified again by a filling module and then is discharged through a water outlet.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device for improving the water quality of black and odorous river courses. Background technique [0002] At present, my country's sewage treatment generally implements the industry pollutant discharge standards formulated by the state or the river basin pollutant discharge standards and industry pollutant discharge standards formulated by various provinces and cities. The evaluation of surface water quality usually follows the standard of "Environmental Quality Standards for Surface Water" GB3838-2002. In areas with less rainfall, due to the lack of effective precipitation in the dry season, rivers usually become pollution-carrying channels in winter. In this season, even if the sewage in the basin implements the strictest pollutant discharge standards, other It is still inferior to Class V water quality, and cannot meet the requirements of surface water environmental...

AI Technical Summary

Problems solved by technology

In areas with less rainfall, due to the lack of effective precipitation in the dry season, rivers usually become pollution-carrying channels in winter. In this season, even if the sewage in the basin implements the strictest pollutant discharge standards, other It is still inferior to Class V water quality and cannot meet the requirements of surface water environmental functional zoning

In winter, the amount of water in the river is small, which cannot meet the requirements of ecological water demand, and a large area of ​​the river bed is exposed. The self-purification ability of the river cannot be effectively exerted, and the water quality of the river is poor.

[0003] In water conservancy projects, usually in places where the river channel is relatively open, dams are usually built to form regulation and storage reservoirs in the river channel. Although this method can increase the water storage capacity of the river channel, in the actual process, due to the slowing down of the water flow, it is easy to cause Algae blooms lead to deterioration of water quality, and water conservancy projects usually do not pay attention to the natural ecological restoration capacity of the river. As a result, there is a certain amount of water regulation and storage in the river, but it is difficult to meet the needs of people's production and life due to poor water quality.

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