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Black-odor river pollution treatment method

A technology for pollution control and black and odorous river surges, applied in the direction of sludge treatment, biological sludge treatment, chemical instruments and methods, etc., can solve the problems of occupying land area, unable to eliminate black and odorous pollution, and achieve the elimination of black and odorous water bodies. Smell, increase biodiversity, restore balance effect

Inactive Publication Date: 2009-04-29
黎赓桓 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method not only occupies the land area outside the water area of ​​the river, but also fails to deal with the upstream and downstream of the river as a whole, so it cannot achieve the effect of eliminating black and odor pollution in the whole river.

Method used

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Examples

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Effect test

Embodiment 1

[0038] A river in Guangzhou has a total length of about 700m and an average width of 8m. There is a sluice in the south of the river that connects with the Pingzhou waterway of the Pearl River, and it can communicate with other rivers in the north. The flow state of the river channel is complex, and the water depth is about 0.8-1.5m. Both sides of the river are residential areas of villages and towns, with a population of about 7,000-8,000. Residents' domestic sewage and a small amount of industrial wastewater are discharged into the river. The water is black and smelly, and the COD is as high as 100-200mg / L.

[0039] Adopt the present invention to control 500m one section of river gushing, concrete implementation method is as follows:

[0040] (1) Build a sandbag-stacked dam at both ends of the treated river section, with a height of 1.0m and a bottom width of 1.6m, to ensure that the water in the river section is not lower than 1.0m when the sluice is open. Then install aer...

Embodiment 2

[0047] A flood drainage ditch in an urban-rural junction has a total length of 5-6km, and the drainage ditch receives nearby residential areas and upstream agricultural and industrial wastewater. Both sides of the flood discharge ditch and the bottom of the ditch are built of gravel, 16m wide, the water body is extremely black and smelly, DO0.1mg / L below, COD above 250mg / L, the bottom mud is thick, the water layer is only 0.20-0.25m, and the flow rate is fast. The daily flow is about 7000~8000m 3 . When it rains, the river swells and the runoff doubles.

[0048] Adopt the method of the present invention to control the 1000m river section adjacent to the residential area in the downstream of the flood discharge ditch, and the specific implementation is as follows:

[0049] (1) Build gate dams at the upstream and downstream ends of the treated river section, the height of the upper dam is 1.0m, and the height of the lower dam is 1.2m, so as to maintain the average water level ...

Embodiment 3

[0056] A city landscape river, 2.35km long, 6-12m wide, 0.8-1.6m deeply affected by tides, and 20,000m water surface area 2 , the bottom unstable silt layer is about 0.5m thick. The river was rehabilitated in 2006, and municipal engineering measures such as sewage interception, dredging, and bank revetment were implemented. However, due to incomplete interception of sewage, rainwater and sewage on both sides of the river were still mainly discharged into the river, and the water quality gradually deteriorated. The water in the river is green when the tide is high, and black and smelly when the tide is low. COD80~150mg / L, NH 3 -N10~15mg / L, DO0.1~0.3mg / L.

[0057] Adopt the present invention to implement the in-situ control of the whole river, the specific method is as follows:

[0058] (1) There were sluices and pumping stations at both ends of the river, which were connected to another river. Through sluices, the river gushing water level is controlled to not be lower than...

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Abstract

The invention discloses a method for managing town black and olid river pollution in situ by utilizing biological repair technology, which takes the steps and measures of aerating and oxygenizing in riverway, adding a complex microbial agent, biologically repairing bottom sediment, arranging a bio-nest system and the like, so as to control and eliminate the exogenous and endogenous pollution of the river, purify the water quality of the river, improve the self-purification ability of the water body and achieve the purpose of eliminating black and olid. The method does not need to build structures in the riverway or lead the river water out of the riverway to be treated, or dredge the bottom sediment in the river, therefore the method is generally applicable to incomplete sewage interception and dredging or the rivers which can not be intercepted sewage or dredged temporarily, and the in situ treatment to the riverway which is affected by tide and has complicated fluid variation. Therefore, the method which can lead the water body to recover normal ecological function provides the practical, economic and convenient treatment method for various town black and olid rivers.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method for controlling river channel pollution in situ by adopting bioremediation technology mainly based on aeration and oxygenation. technical background [0002] Black and odorous river surges are a common phenomenon in urban river networks in my country. The reason is that the discharge and deposition of organic pollutants cause the imbalance of the oxygen balance system of river surges. The control of black and odorous rivers mainly adopts municipal engineering methods such as sewage interception, dredging, revetment greening, water diversion, and water replenishment. However, due to various reasons, river sewage interception and dredging cannot be carried out temporarily or completely, and water purification has achieved little effect. micro. There is no ideal treatment method for black and odorous river pollution. [0003] Chinese Patent Application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F7/00C02F3/02C02F11/02
CPCY02W10/10Y02W10/20
Inventor 黎赓桓孙志鸿
Owner 黎赓桓
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