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Small watershed black and odorous water body restoration method

A technology for black and odorous water bodies and restoration methods, which is applied in chemical instruments and methods, water aeration, water pollutants, etc. Low operating costs, promoting metabolic activity and growth, and prolonging dissolution time

Inactive Publication Date: 2021-07-06
四川瑞泽科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1) This treatment method has certain limitations and is not perfect enough. It only deals with point source pollution, and the treatment of source pollution is not in place.
[0008] 2) The processing time is long, the processing efficiency is low, and the processing measures are difficult to achieve the governance effect
[0009] 3) Organic matter, ammonia nitrogen, heavy metals, blue-green algae and other pollutants in black and odorous water bodies have not been effectively resolved
[0010] 4) The introduction of foreign microorganisms by compound microbial preparations is difficult to control and has secondary pollution

Method used

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  • Small watershed black and odorous water body restoration method
  • Small watershed black and odorous water body restoration method
  • Small watershed black and odorous water body restoration method

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Effect test

Embodiment 1

[0048] The treated watershed involves 48,500 people in 28 villages, with a watershed area of ​​43.62 square kilometers and a total land area of ​​10.84 square kilometers, including: 328 hectares of cultivated land, 31.4 hectares of forest land, 112.6 hectares of grassland, and the area of ​​land for residential areas and transportation 321.7 hectares, the water area is 156 hectares. There is 1 main river and 17 branch canals. The main river has obvious runoff, and the other branch rivers have less water volume, poor water flow, and imperfect sewage collection measures. The main point source of pollution in this basin is the direct discharge of village domestic sewage, small-scale aquaculture wastewater, the discharge of small-scale enterprise wastewater through hidden pipes, and the discharge of sewage treatment plants. The water quality of the rivers in the basin is inferior to Class V, and some sections of the basin belong to severe black odor and mild black odor.

[0049] ...

Embodiment 2

[0063] The treated watershed involves 1 main river and 21 branch canals. The main river has obvious runoff, and the other branch rivers have less water volume and poor water mobility. The main point sources of pollution in this watershed are village domestic sewage, small-scale breeding wastewater, and direct discharge of small-scale enterprise wastewater. The bottom mud is silted up, the original ecosystem of the water body is destroyed, and the coastal aquatic plants are lost.

[0064] For the black and odor problem in this watershed, the specific treatment is as follows:

[0065] S1. Water system connectivity: dredging and remediation of channels with serious siltation at the bottom of the canal; reconstruction of banks without embankments, flood control, and waterlogging capabilities; connecting areas with poor water fluidity to the mainstream of the basin and various tributaries with strong fluidity , reservoirs, lakes, constructed wetlands, etc. In addition, for the ar...

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Abstract

The invention relates to a small watershed black and odorous water body restoration method. The method comprises the following steps: S1, communicating a water system; s2, intercepting and treating pollution; s3, surface source control; s4, water quality improvement; s5, substrate improvement; s6, in-situ treatment of the drainage basin; and S7, constructing a water ecosystem. According to the method, the water system in the small watershed is firstly communicated to accelerate watershed water flowing, then source control and pollutant interception are carried out, point source pollution and non-point source pollution are effectively controlled from the source, then water quality is rapidly improved through physical-chemical-biological means, and finally the water ecosystem is constructed after bottom mud improvement, endogenous pollution solving and watershed in-situ treatment, and the small watershed black and odorous water body is resetored from the root. The restoration method is more systematic, point source, non-point source and endogenous pollution control is more thorough and more efficient, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of repairing black and odorous water bodies, in particular to a method for repairing black and odorous water bodies in small watersheds. Background technique [0002] Small watershed refers to the catchment area below the secondary and tertiary tributaries, bounded by the watershed and the outlet section of the downstream channel, with a catchment area of ​​50Km 2 The following relatively independent and closed natural catchment areas. The black and odorous water body is a biochemical phenomenon. When the water body is seriously polluted by organic matter, the aerobic decomposition rate of the organic matter in the water body will make the aerobic rate in the water body greater than the reoxygenation rate, resulting in anoxic water body, resulting in incomplete degradation of the organic matter, slowed down, and anorexia. In the process of oxygen biodegradation, hydrogen sulfide, amine, ammonia, mercaptan, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30C02F101/16C02F101/20
CPCC02F9/00C02F2103/007C02F2101/30C02F2101/16C02F2101/20C02F3/34C02F3/1268C02F7/00C02F1/281
Inventor 蔡艳红万晶邓丽娟任雷王德林陈刚王江
Owner 四川瑞泽科技有限责任公司
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