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Plain river network area surface source pollution reinforced depuration prepositive library system

A plain river network and non-point source pollution technology, applied in the field of non-point source pollution control system, can solve the problem of single structure and achieve the effect of reducing load

Inactive Publication Date: 2005-06-01
国家环境保护总局南京环境科学研究所
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Problems solved by technology

In the previous studies at home and abroad, the pre-reservoir was mostly set up in hilly areas, and natural slopes were needed to intercept sediment and N, P nutrients, and the structure was single, with only one reservoir area. The classic pre-reservoir There is no precedent for the application of storage in plain river network areas

Method used

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  • Plain river network area surface source pollution reinforced depuration prepositive library system

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Embodiment Construction

[0025] Combined with the sub-topic of the National High-tech Research and Development Program "Complete Technology for Non-point Source Pollution Control in River Network Areas (2002AA601012)", a pre-storage enhanced purification system was established in Punan Village (Taihu Lake Area), Dapu Town, Yixing City, Jiangsu Province, and applied to plains Rural non-point source pollution control in river network areas.

[0026] The system has a catchment area of ​​about 3 square kilometers and 4 rivers within the collection area. The main reservoir area covers an area of ​​about 16,000 square meters. The length of the collection system is about 3.6 kilometers, and the settlement system is about 700 meters. The details are as follows.

[0027] (1) Ecological ditches (surface runoff collection and regulation subsystem)

[0028] There are four ditches to be cleaned, namely A, B, C, and D. The basic design features of each ditch are shown in the table below.

[0029] the ...

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Abstract

The present invention discloses one kind of reinforcing purifying pre-reservoir system for treating the plain river network area. The reinforcing purifying pre-reservoir system includes four parts: surficial runoff colleting and regulating subsystem; depositing plant grating subsystem; reinforcing purifying ecological permeable dam subsystem; and pre-reservoir area. The said four parts are connected successively to form one complete reinforcing purifying pre-reservoir system for treating the plain river network area. The system can eliminate N and P containing nutritive salts, suspended solid and one pollutant from surficial runoff and other pollution sources to reduce pollution load. The present invention can reach the target of eliminating TN in 60 %, TP in 70 % and SS in 80 %, and the technology may be used in plain river network area.

Description

1. Technical field [0001] The invention relates to a non-point source pollution control system, in particular to a pre-storage system for strengthening and purifying non-point source pollution in plain river network areas. 2. Background technology [0002] Pre-reservoir is called pre-dam or pre-reservoir in English. Since the late 1950s, Germany, Denmark, and the former Czech Republic have carried out research and practice of using pre-reservoir to control water eutrophication (Klaus Pütz, Jürgen Benndorf, The importance of pre-reservoirs for the control of eutrophication of reservoirs, Water Science and Technology, 1998, 37(2): 317-324). This technology has also been used in the non-point source pollution control of Yuqiao Reservoir and Dianchi Lake in my country, and has been introduced successively (Bian Jinzhong et al., Feasibility Study on Pre-reservoir Countermeasures for Eutrophication Prevention and Control of Yuqiao Reservoir, Urban Environment and Urban Ecology, 19...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/00E02B1/00
Inventor 张永春张毅敏胡孟春张龙江田猛唐小燕吴小敏
Owner 国家环境保护总局南京环境科学研究所
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