Method and system for remediation and treatment of polluted river water

Abstract

The invention discloses a method and a system for remediation and treatment of polluted river water. The method comprises the following steps that a river way is separated so that a composite anaerobic treatment segment is formed; a sediment stirring device is installed in the composite anaerobic treatment segment; a filling material is arranged at an upper part of the composite anaerobic treatment segment; river sediment is stirred by the sediment stirring device, then suspends and fully contacts with polluted river water from a lower part of the composite anaerobic treatment segment, wherein original indigenous microorganisms in the river sediment can effectively degrade pollutants in the polluted river water; the polluted river water with a part of the river sediment flows upstream, contacts with the filling material, and then is subjected to inoculation enrichment on the filling material so that a biomembrane is formed; the polluted river water is subjected to further treatment to form product water; and product water obtained by the method can be subjected to further aerobic and ecological remediation treatment and is discharged. The method and the system for remediation and treatment of polluted river water can obviously decrease a river sediment amount, can realize effective degradation of various pollutants in river water, and have the advantages of environmental friendliness, safety and good effectiveness.

Description

technical field

[0001] The invention relates to a method and system for restoration and treatment of polluted river water, in particular to a treatment method for in-situ biological restoration of a river and a river water purification system. Background technique

[0002] In recent years, with the development of my country's industry and the increase of urban population, the total amount of industrial wastewater and domestic sewage is also increasing continuously. A large amount of industrial wastewater and domestic sewage flow into the river, which makes the river seriously polluted and the water quality is extremely bad. At present, 90% The above-mentioned urban rivers are polluted to varying degrees, and some rivers are even completely degraded into Nashui Rivers, which completely lose their self-purification ability and turn black and smelly, seriously affecting the beautification of the city and people's lives. Therefore, comprehensive treatment of polluted rivers has b...

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