Bypass offline river purifying method and purifying system

A technology for purification systems and rivers, which is applied to the improvement of water quality of polluted rivers and ecological restoration of rivers, realizes the purification system field of the above method, and can solve the problems of high infrastructure cost and operation and maintenance cost, obstacles to the promotion of offline treatment technology, consumption of power to improve water, etc. , to achieve the effect of small amount of engineering, good removal effect and low investment

Active Publication Date: 2013-03-20
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology

However, because the process requires sufficient hydraulic retention time, it often requires a large-scale treatment plant area, and it is difficult to obtain land in urban rivers, which poses a great obstacle to the promotion of off-line treatment tech

Method used

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  • Bypass offline river purifying method and purifying system
  • Bypass offline river purifying method and purifying system

Examples

Experimental program
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Effect test

Embodiment

[0043] Example: Longdao River water purification project in the middle section of Beijing North Canal

[0044] Wenyu River Section 21, located in the middle section of the North Canal in Beijing, has water quality of inferior V category. Longdao River 22, a tributary in the middle section of Wenyu River, starts from the east of Roman East Lake, and is used as a sewage channel with black and smelly water. In order to improve the water quality of the Longdao River, the Wenyu River-Rome West Lake-Roman East Lake 25-Longdao River water system is connected by using the artificially excavated diversion channel at the upper end of Roman West Lake 24 to build a bypass system. The diversion pumping station 29 and the control tail gate 28 can be constructed through the upper section of the Longdao River to divert water from the Wenyu River. In the bypass, the winding river, deep pools and shoals and other pseudo-natural river 23 projects, coastal plant buffer and filter belt and other ...

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Abstract

The invention relates to a bypass offline river purifying method and a bypass offline river purifying system. According to the invention, a branch of a polluted river is adopted as a basis; a drainage channel is constructed, such that a bypass is formed; polluted river water is introduced into the bypass from the branch, such that the retention time of the polluted river water in the bypass is increased; in the bypass, pollutants are removed with offline and online ecological engineering technology and environmental engineering technology; and purified water flows into a main stream, such that river water quality is improved, and river ecosystem is restored. The invention also discloses a purifying system used for realizing the bypass offline river purifying method. According to the invention, main stream river channel original status is not changed, main stream flood protection is not influenced, and water quality purification and ecological restoration effects are good. The method and the system are suitable for ecological management and ecological restoration of polluted river with rich branches, dense drainage irrigation channels, or developed ponds.

Description

technical field [0001] The invention belongs to the field of river ecological control and ecological restoration, and in particular relates to a method for improving the water quality of polluted rivers and restoring river ecology. [0002] The invention also relates to a purification system for carrying out the above method. Background technique [0003] At present, our country is facing the dual problems of water resource shortage and water environment pollution, among which the problem of river pollution is extremely prominent, so the technical demand for improving river water quality is extremely urgent. At present, the main excessive pollutants in rivers are COD (Chemical Oxygen Demamd, chemical oxygen demand) and ammonia nitrogen. [0004] At present, the river pollution remediation modes are mainly divided into source control, online treatment, offline treatment, comprehensive treatment and other modes. [0005] Source treatment is to deal with pollution sources fro...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCY02A20/402
Inventor 魏源送王亚炜王为东单保庆
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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