River channel dredging method

A technology of river course and silt, applied in chemical instruments and methods, water/sewage multi-stage treatment, biological water/sewage treatment, etc., can solve the problems of river course siltation, endogenous pollution, etc., to solve river course siltation and prevent environmental secondary Pollution, the effect of improving the current situation of river pollution

Inactive Publication Date: 2020-11-10
中建生态环境集团有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for dredging river channels, which essentially solves the problems of river channel silting and endogenous pollution

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[0036] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0037] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this description, it indicates that there are Features, steps, operations, devices, components and / or combinations thereof.

[0038] The technical solutions of the present invention will be clearly and completely described below...

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Abstract

The invention relates to the technical field of river channel dredging, in particular to a river channel dredging method which comprises the following steps: dividing a riverway to be cleaned into cofferdams, and dredging the riverway in a segmented manner by adopting a cutter suction pumping mode and a hydraulic flushing and digging mode; then subjecting the cleaned muddy water sequentially to preliminary precipitation, sorting and flocculent precipitation to obtain purified sludge; finally, dehydrating and sun-drying the purified sludge in sequence, and backfilling a mud cake after sun-drying. According to the river channel dredging method, the physical and chemical combined treatment process is adopted and are ingeniously combined, so that the arsenic, copper, chromium and other heavy metal ions in the bottom mud can be effectively treated, harmless and resourceful treatment of the bottom mud is achieved, secondary pollution caused by discarding of the bottom mud without treatment can be prevented and the bottom mud can be effectively utilized; therefore, flood discharge and dredging capacity of the riverway is enhanced, the problem that silting pollution of the riverway is difficult to dispose is solved, and the purposes of pollutant reduction, stabilization, harmlessness and recycling are achieved.

Description

technical field [0001] The invention relates to the technical field of river dredging, in particular to a river dredging method. Background technique [0002] River channels are an important part of the city, and play a decisive role in flood control and waterlogging prevention and the optimization of the urban environment. However, with the development of the economy and the acceleration of urbanization, human destruction of vegetation has caused water and soil erosion, piles of domestic garbage along the river, and various construction silts poured into the river, resulting in continuous silting of the river bottom, and the water gradually becomes black and smelly. , affect river flood safety and river landscape, and seriously threaten the stability of river ecosystem and human living environment. Therefore, comprehensive river regulation has gradually attracted people's attention. [0003] River sediment has the characteristics of high water content, fine particles, stro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/121C02F11/122C02F11/143C02F11/147E02F3/88E02F3/92E02F5/28C02F9/14C02F101/20C02F101/22
CPCE02F5/28E02F3/885E02F3/9225C02F11/121C02F11/122C02F11/00C02F11/143C02F11/147C02F3/00C02F2001/007C02F2101/22C02F2101/20
Inventor 米卫星张义周
Owner 中建生态环境集团有限公司
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