Ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and construction method thereof

A micro-pollution, corridor technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc.

Inactive Publication Date: 2011-04-06
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0028] 1. The technical problem to be solved by the invention: the purpose of the invention is to provide an ecological corridor and a construction method thereof for removing nitrogen and phosphorus in micro-polluted river water. The present invention forms an ecological corridor by building, which can ove...

Method used

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  • Ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and construction method thereof
  • Ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and construction method thereof
  • Ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The ecological corridor purification project (large-scale) experiment was carried out in a slightly polluted river in a certain river in southern Jiangsu. The river is a river flowing into a lake, polluted by upstream domestic sewage and agricultural non-point source sewage, and the water body is in a state of eutrophication.

[0051] (1) Site selection for the construction of the ecological corridor: the pond along the Xiaxi River and near the entrance of the river Gehu Lake is selected as the project site. The shape of the pond is approximately rectangular, and the area is 100m×200m=20000m 2 .

[0052] (2) dredging the bottom of the pond, and doing compaction and simple anti-seepage treatment to form a simple leak-proof base 6, and the slope of the bottom of the pond is controlled within 0.1%;

[0053] (3) Build the water inlet 4 and the overflow outlet 5 of the ecological corridor system, the water depth of the system is 1.5m, and the water depth in the system is co...

Embodiment 2

[0059] Example 2: Micro-polluted river ecological corridor purification project (small).

[0060] (1) Project site selection: choose a place in southern Jiangsu for experimentation, and transform it from an existing fish pond. The area of ​​the fish pond is 120m*40m=4800m 2 ;

[0061] (2) dredging the bottom of the pond, and doing compaction and simple anti-seepage treatment to form a simple leak-proof base 6, and the slope at the bottom of the pond is controlled at 0.1%;

[0062] (3) Build the ecological corridor system water inlet 4 (pumping station pumping water) and overflow outlet 5, the water depth of the system is 1.0m, and the water depth in the system is controlled by the overflow outlet method;

[0063] (4) Build diversion dams 2 and build diversion corridors: there are diversion dams 2 connected to the embankment 1 of the pond in the direction parallel to the length of the pond, and diversion dams 2 are built every 13m. The connected banks of the two dams are in ...

Embodiment 3

[0068] Example 3: Micro-polluted river ecological corridor purification project (medium-sized).

[0069] (1) Project site selection: select a certain place in southern Jiangsu for experimentation, and transform it from the existing Duantoubang. The area is 200m*40m=8000m 2 ;

[0070] (2) dredging the bottom of the ditch and bang, and doing compaction and simple anti-seepage treatment to form a simple leak-proof base 6, and the slope of the bottom of the ditch and bang is controlled at 0.1%;

[0071] (3) Build the ecological corridor system water inlet 4 (pumping station pumping water) and overflow outlet 5, the water depth of the system is 1.0m, and the water depth in the system is controlled by the overflow outlet method;

[0072] (4) Build diversion dams 2 and build diversion corridors: there are diversion dams 2 connected to the embankment 1 of the pond in the direction parallel to the length of the ditch, and diversion dams 2 are built every 20m. The connected banks of ...

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Abstract

The invention discloses an ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and a construction method thereof, which belong to the field of river water pollution treatment. The ecological corridor is positioned in a pond with an area of over 4,000m<2>; two or more parallel flow guide dams are formed along the length direction of the pond; adjacent flow guide dams are opposite to each other; the length of the flow guide dam is at least three fourths the length of the pond; a flow guide corridor is formed between the flow guide dam and a shore side and between the flow guide dams; floating plants or a fixed ecological floating bed is arranged in the flow guide corridor; and the water surface coverage of the ecological floating bed is 10 to 20 percent. The flow guide corridor is constructed by establishing the flow guide dam and the ecological corridor is constructed by arranging the ecological floating bed. The water quality index of most of the micro-polluted river water treated by the ecological corridor can reach and exceed the IV-V class standard in the national surface water quality standard (GB2002-3838). The purified water body finally flows out through an overflow outlet at the rear end of the system and used for fishery, landscapes, agricultural irrigation water and the like.

Description

technical field [0001] The invention relates to a treatment system for slightly polluted river water and a construction method thereof, in particular to an ecological corridor for removing nitrogen and phosphorus from slightly polluted river water and a construction method thereof. Background technique: [0002] With the rapid development of modern economy, the problem of river pollution is becoming more and more serious due to the influence of human factors such as industrial and urban wastewater and farmland surface runoff. Studies have shown that the water quality of the 53 rivers entering and exiting the lake around Taihu Lake is mainly Class IV and V, and the proportion of rivers inferior to Class V in the total number of water systems entering and exiting the lake is relatively high, reaching 24%. (Yu Hui, Yan Shuwen, Xu Jun. Multivariate Statistical Analysis of Water Quality of Taihu Lake Inlet and Outlet Rivers. Yangtze River Basin Resources and Environment, 2010, 19...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34C02F3/30
CPCY02W10/10
Inventor 张毅敏晁建颖孔祥吉高月香张后虎张永春
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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