Method and system for improving water quality of black and odorous water body in river channel

Abstract

The invention relates to a method and a system for improving water quality of a black and odorous water body in a river channel. The method is characterized in that the downstream water body of the river channel is extracted, non-soluble organic pollutants, total phosphorus and solid suspended matters in the water body are removed by a magnetic coagulation treatment technology, the turbidity of the water body is reduced, and the transparency of the water body is improved; the water body treated by the magnetic coagulation treatment technology is transported to the upstream of the river channelas a water supplement source of the upstream water body of the river channel, supplementing water flows automatically with the upstream water body of the river channel to the downstream of the riverchannel, and the S1 step process is repeated to form a living water cycle; aeration and reoxygenation are performed on the water body of the river channel, the dissolved oxygen concentration of the water body of the river channel is improved, and the oxygen content of the water body is improved; the ecosystem of the water body of the river channel is restored, dissolved organic matters in the water body of the river channel are purified; the method breaks through the problems that not-up-to-standard COD, ammonia nitrogen, and total phosphorus of the current water body treatment, and lack of self-purification ability of the river channel. The main indicators of the water body of the river channel treated by the method and system can reach the standard of surface water type IV water.

Description

technical field [0001] The invention relates to the field of water body treatment, in particular to a water quality improvement method and system for black and odorous water bodies in river courses. Background technique [0002] Urban rivers are an important part of urban human settlements. However, due to their characteristics of easy pollution, small water environment capacity, and poor self-purification ability of water bodies, they can easily become sinks for residents' domestic sewage, rainwater, and garbage, resulting in water body dissolution. The massive consumption of oxygen causes the water body to become black and smelly due to lack of oxygen, causing the entire ecosystem to collapse. At the same time, pollutants are difficult to degrade and deposit in the bottom mud, forming serious endogenous pollution. The phenomenon of black odor and substandard water quality in urban rivers has become a common pollution problem in many cities in our country, seriously affecti...

AI Technical Summary

Problems solved by technology

[0003] The current commonly used river water treatment methods mainly include sewage interception, dredging, aeration and oxygenation, biofilm filling, submerged phytoremediation, ecological floating islands, microbial regulation, and ex-situ enhanced treatment. Large fluctuations in water quality and quantity, incomplete interception and collection of sewage, and release of endogenous pollution have resulted in the unsteady operation of relevant treatment measures, and it is difficult to achieve the desired effect.

Relatively speaking, the operation of ex-situ strengthening treatment measures is relatively stable, such as supermagnetic separation, contact oxidation, MBR and other integrated equipment, which can effectively remove some pollutants in the water body under normal conditions, but it is not conducive to restoring the self-purification ability of the river. Fundamentally achieve the purpose of river management

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