Baffling in-situ treatment system for black and odorous water body and treatment method

Abstract

The invention provides a baffling in-situ treatment system for a black and odorous water body and a method for treating the black and odorous water body by use of the system. The baffling in-situ treatment system for a black and odorous water body comprises a pretreatment area, an aerobic biological treatment area and a settling area. By transforming a river structure and increasing the water flow baffling, the time of a water body staying in a unit area is increased, and the surrounding land is basically not occupied. In-situ remediation is performed mainly by a biological process, and an aim of improving the water quality of the black and odorous water body is achieved finally. Moreover, residual sludge generated at the tail end can be subjected to baffling or discharge treatment; the sludge backflow is controlled to increase the regional microorganism concentration and improve the treatment efficiency; the sludge discharge is controlled to realize an effect of removing phosphorous of the water body; according to the method, since the in-situ remediation of the black and odorous water body is limited in a smaller area, sufficient time is provided for degrading pollutants in water, and the treatment cost is reduced; moreover, the treatment is quick and efficient, and secondary pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a baffle type black and odorous water body in-situ treatment system and treatment method. Background technique [0002] Black odor is an extreme phenomenon of organic pollution in water bodies, which is caused by the lack of oxygen in water bodies and organic corruption. According to analysis, the main reasons for the appearance of black and odorous water bodies are: direct discharge of sewage, overflow pollution of combined pipelines, and ecological damage, resulting in the loss of self-purification ability of the river. Black and odorous water not only affects the urban landscape and ecological environment, but may also enter groundwater resources and affect human health. Therefore, the comprehensive treatment of black and odorous water bodies in our country is urgent. [0003] At present, the treatment methods for black and odorous water bodies mainly inc...

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Problems solved by technology

[0004] Although with the development of science and technology, the original technology has been improved in practical application, many problems have not been solved. The ecological floating bed technology can not only bring landscape effects, but also purify the water environment to a certain extent, but it is not suitable for serious pollution. 1. Rivers with a large area of ​​pollution have little effect; some mobile emergency treatment systems can achieve rapid treatment effects on small areas of black and odorous water bodies, but for large areas of river pollution, the treatment cost is too high, and it cannot achieve thorough treatment. The purpose of cure

The use of chemical treatment (coagulation treatment) is only for the transfer of pollutants, without removal and removal, and the treatment effect on organic matter and nitrogen is limited. Artificial dosing of chemical treatment agents will cause accumulation of adverse effects on the ecosystem and should not be advocated.

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