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Ecological filter dam based on efficient in-situ interception of pollutants and application of ecological filter dam

A pollutant and ecological technology, applied in the fields of water pollutants, filtration treatment, water/sewage treatment, etc., can solve the problems of difficult construction of ecological filter dams, limited purification capacity, short service life, etc. The effect of low construction difficulty and long service life

Pending Publication Date: 2020-01-21
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing ecological filter dams mainly have problems such as difficult construction, limited purification capacity, serious blockage of the dam body, and short service life, which greatly limit its application in river channel management

Method used

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  • Ecological filter dam based on efficient in-situ interception of pollutants and application of ecological filter dam
  • Ecological filter dam based on efficient in-situ interception of pollutants and application of ecological filter dam
  • Ecological filter dam based on efficient in-situ interception of pollutants and application of ecological filter dam

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Experimental program
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Effect test

Embodiment 1

[0051] In the in-situ restoration of a polluted river, first set up fishing nets in the upstream of the river treatment area, with a horizontal length of 22m, a width of 1.5m, and 1 finger of inner mesh. Both ends of the net are tied to fixed piles on the bank with nylon ropes. The top of the fishing net is about 0.5m above the water surface, and the rest is below the water surface.

[0052] 20m downstream of the fishing net is the front dam, the dam body has a total length of 10m, a total width of 20m, and a total height of 2m. The gabion net is made of galvanized steel wire. , the vertical section is 10 rows in the lower layer and 9 rows in the upper layer, 10 in each row, the matrix is ​​gravel, the large particle size is 15-30mm, the medium and small particle size is 8-20mm, two kinds of particle size matrix gabion monomer Staggered arrangement, each row adopts the same particle size, that is, along the direction of water flow, the lower layers 1, 3, 5, 7, and 9 and the up...

Embodiment 2

[0059] The upstream water of a city’s river is mainly the tail water of the sewage treatment plant, and the quality of the influent water meets the Class A standard of the Discharge Standard of Pollutants for Urban Sewage Treatment Plants (GB 18918-2002). An ecological filter dam system is established 100m downstream of the outlet , and embodiment 1 difference is: small eye fishing net is horizontally long 10m, wide 0.5m; Fishing net downstream 10m establishes single-layer front dam, dam body total length 5m, wide 8m, high 1m; The length is 30m, the width is 8m, and the elastic biological filler monomer is hung on the filler support body. The length of the monomer is 0.7m. There are 30 aeration pipes in total, and the aeration plate is set on the aeration pipes with a distance of 1m; behind the biological contact oxidation zone is a single-layer rear dam with a total length of 12m, a width of 8m, and a height of 1m.

[0060] Since the trial operation of this embodiment for 3 m...

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Abstract

The invention provides an ecological filter dam based on efficient in-situ interception of pollutants and application of the ecological filter dam, and belongs to the technical field of water environment treatment. The ecological filter dam sequentially comprises a dam front intercepting area, a front dam, a biological contact oxidation area and a rear dam in the water flow direction. The dam front intercepting area comprises an overwater trash holding buoy and a fishing net; the front dam is formed by stacking a plurality of ecological gabion single bodies, which are respectively filled withmedium and small-particle-size matrixes and large-particle-size matrixes in a staggered manner; an aeration system in the biological contact oxidation zone comprises an aeration pipe arranged at the bottom of the river channel and a microporous aeration disc attached to the aeration pipe; a filler supporting body is arranged above the aeration system, and biological filler is hung on the filler supporting body; the rear dam is formed by stacking a plurality of ecological gabion single bodies filled with matrixes with superfine particle sizes in a staggered mode. The ecological filter dam can effectively improve the removal capacity of the filter dam, the problem of dam body blockage is fundamentally solved, and the service life of the ecological filter dam is greatly prolonged. And meanwhile, the dam body adopts modular units, is easy to construct, can be replaced and disassembled in time, and is wide in applicability.

Description

technical field [0001] The invention belongs to the technical field of water environment treatment, and in particular relates to an ecological filter dam based on efficient in-situ interception of pollutants and its application. Background technique [0002] In recent decades, with the rapid development of my country's social economy, water pollution has been increasing, and the quality of water environment is not optimistic. As a large amount of pollutants are discharged into the water body, most of them eventually collect into the river, resulting in the deterioration of the water quality of the river. Existing treatment technologies, in addition to source control and interception, mainly include two types of ex-situ treatment and in-situ treatment. However, due to large fluctuations in the inflow of river water, the ex-situ treatment capacity cannot meet the requirements, and it has a large area, Due to limitations such as high investment, in-situ treatment of polluted r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14E02B7/02E02B8/02C02F101/30
CPCC02F9/00E02B7/02E02B8/023C02F1/001C02F1/281C02F3/02C02F2101/30
Inventor 梁威唐海滨张紫涵王飞华代嫣然
Owner INST OF AQUATIC LIFE ACAD SINICA
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