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An ecological blanket laying method for in-situ restoration of heavily polluted rivers

An in-situ repair and laying method technology, which is applied in chemical instruments and methods, biological water/sewage treatment, adsorption water/sewage treatment, etc., can solve problems such as easy deformation, blocked sediment gas discharge, and simple and extensive laying methods. Achieve the effect of low cost, efficient removal and convenient installation

Active Publication Date: 2021-08-03
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of simple and extensive laying method in the existing ecological blanket laying technology, difficulty in real-time monitoring of treatment effect, obstruction of sediment gas discharge, easy deformation after laying, and difficulty in lasting pollution control effect. The trachea is combined with supporting technologies such as stepped ecological revetment and ecological interception ditch to establish a new method and new system for laying ecological blankets in heavily polluted rivers, and comprehensively utilizes plant absorption, microbial degradation, porous material adsorption and other cleaning methods to effectively control the endogenous source of sediment Purify the river catchment water while polluting, the stability of the ecological blanket is significantly improved after the laying of the ecological blanket, and the long-term application of the cleaning effect is efficient and durable

Method used

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  • An ecological blanket laying method for in-situ restoration of heavily polluted rivers
  • An ecological blanket laying method for in-situ restoration of heavily polluted rivers
  • An ecological blanket laying method for in-situ restoration of heavily polluted rivers

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Embodiment 1

[0051] Such as figure 2 Shown is an ecological blanket laying method for in-situ restoration of heavily polluted rivers. According to the river bed shape and pollution characteristics, the ecological blanket laying scheme is determined as scheme A. The laying method extends the ecological blanket laying area to the normal water level line of the river slope, Outside the laying area are the slope vegetation area 13, the secondary interception ditch 7, the river bank plant area 14, and the primary interception ditch 8; the ecological blanket 6 uses fixed rivets 3 to reinforce the ecological blanket, and the outer layer of each ecological blanket is covered with Hard plastic net 1, and connecting ring 2 is set on hard plastic net 1, is used for the combination, connection of a plurality of ecological blankets, and an air duct 5 is installed in the very center of the ecological blanket of every square meter, is used for exporting in the bottom mud For the gas produced in the proc...

Embodiment 2

[0061] Such as image 3 An ecological blanket laying method for in-situ restoration of heavily polluted rivers is shown. According to the river bed shape and pollution characteristics, the ecological blanket laying plan is determined as plan B. The ecological blanket is laid to the bottom of the river bed, and the laying area is followed by stepped revetment 9, Slope vegetation area 13, secondary intercepting ditch 7, river bank plant area 14, primary intercepting ditch 8; the ecological blanket used in the present invention is preferably a multifunctional composite ecological blanket with plant absorption, material adsorption, and microbial degradation, using fixed rivets 3. Reinforce the ecological blanket, cover the outer layer of each ecological blanket with a hard plastic net 1, and set a connecting ring 2 on the hard plastic net 1, which is used for the combination and connection of multiple ecological blankets. An air duct 5 is installed in the center of the ecological ...

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Abstract

The present invention proposes an ecological blanket laying method for in-situ restoration of heavily polluted rivers, including the following steps: (1) determining the ecological blanket laying scheme according to the riverbed shape and sediment pollution characteristics; (2) assembling and laying the ecological blanket; (3) Planting of slope vegetation area or layout of stepped ecological revetment; (4) Arrangement of secondary ecological retention ditch and primary ecological retention ditch; (5) Planting of riparian vegetation area. The invention can effectively avoid the jacking deformation caused by the gas production of the bottom mud after laying the ecological blanket, and can optimize the laying scheme according to the conditions of the river channel to ensure long-term stable operation; it is simple to implement and can be popularized and applied on a large scale.

Description

technical field [0001] The invention relates to an ecological blanket laying method for in-situ restoration of heavily polluted river courses, and belongs to the technical field of water pollution treatment and restoration. Background technique [0002] With the rapid development of industry and agriculture in recent years, a large amount of industrial and agricultural production pollutants have been discharged into rivers and lakes, causing many pollution problems in natural water bodies and seriously threatening the safety of the ecological environment and human health. After the sewage rich in nutrients such as nitrogen and phosphorus and refractory organic pollutants is discharged into the water environment, various pollutants accumulate and store in the bottom mud of the water body, which seriously affects the stability of the benthic ecological environment of the river channel; Under conditions such as water level fluctuations and external disturbances, various polluta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/32C02F1/28
CPCC02F1/001C02F1/28C02F3/32C02F3/34Y02A20/402
Inventor 陈娟王沛芳王超钱进孙胜浩
Owner HOHAI UNIV
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