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System and method for restoring triclene polluted groundwater

A technology of trichloroethylene and repair system, applied in aerobic and anaerobic process treatment and other directions, can solve the problems of remediation and treatment of refractory components that cannot be adapted to groundwater, single function, etc., to improve biodegradation efficiency and broad application prospects. Effect

Inactive Publication Date: 2009-05-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the permeability reactive grid technology, the current research hotspot is the selection and improvement of filling materials, and its single function cannot be adapted to the restoration and treatment of refractory components in groundwater.

Method used

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  • System and method for restoring triclene polluted groundwater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) The preparation method of the anaerobic biological reaction wall filler: take the remaining sludge in the anaerobic digestion stage of the industrial sewage treatment plant or domestic sewage treatment plant, according to the activated sludge 70%; coarse sand 13%; clay 15%; trace amount Elements are 2% (including MgSO 4 ·7H 2 O is 0.4%, Fe 2 (SO 4 ) 3 0.4%, MnSO 4 ·H 2 O is 0.5%, ZnSO 4 ·H 2 O is 0.5%, CaCl 2 0.1% and NaCl 0.1%) were evenly mixed and injected into the anaerobic biological reaction wall.

[0021] (2) Preparation method of aerobic biological reaction wall filler: take the remaining sludge in the anaerobic digestion stage of industrial sewage treatment plant or domestic sewage treatment plant, according to activated sludge 60%; coarse sand 15%; clay 23%; trace elements 2% (including MgSO 4 ·7H 2 O is 0.4%, Fe 2 (SO 4 ) 3 0.4%, MnSO 4 ·H 2 O is 0.5%, ZnSO 4 ·H 2 O is 0.5%, CaCl 2 0.1% and NaCl 0.1%) were evenly mixed and injected into...

Embodiment 2

[0024] (1) The preparation method of the anaerobic biological reaction wall filler: take the remaining sludge in the anaerobic digestion stage of the industrial sewage treatment plant or domestic sewage treatment plant, according to the activated sludge 65%; coarse sand 8%; clay 25%; trace amount Elements are 2% (including MgSO 4 ·7H 2 O is 0.4%, Fe 2 (SO 4 ) 3 0.4%, MnSO 4 ·H 2 O is 0.5%, ZnSO 4 ·H 2 O is 0.5%, CaCl 2 0.1% and NaCl 0.1%) were evenly mixed and injected into the anaerobic biological reaction wall.

[0025] (2) Preparation method of aerobic biological reaction wall filler: take the remaining sludge in the anaerobic digestion stage of industrial sewage treatment plant or domestic sewage treatment plant, according to activated sludge 70%; coarse sand 13%; clay 15%; trace elements 2% (including MgSO 4 ·7H 2 O is 0.4%, Fe 2 (SO 4 ) 3 0.4%, MnSO 4 ·H 2 O is 0.5%, ZnSO 4 ·H 2 O is 0.5%, CaCl 2 0.1% and NaCl 0.1%) were evenly mixed and injected into ...

Embodiment 3

[0028] (1) The preparation method of the anaerobic biological reaction wall filler: take the remaining sludge in the anaerobic digestion stage of the industrial sewage treatment plant or the domestic sewage treatment plant, according to the activated sludge 60%; coarse sand 15%; clay 23%; trace amount Element 2% (including MgSO 4 ·7H 2 O is 0.4%, Fe 2 (SO 4 ) 3 0.4%, MnSO 4 ·H 2 O is 0.5%, ZnSO 4 ·H 2 O is 0.5%, CaCl 2 0.1% and NaCl 0.1%) were evenly mixed and injected into the anaerobic biological reaction wall.

[0029] (2) Preparation method of aerobic biological reaction wall filler: take the remaining sludge in the anaerobic digestion stage of industrial sewage treatment plant or domestic sewage treatment plant, according to activated sludge 65%; coarse sand 8%; clay 25%; trace elements 2% (including MgSO 4 ·7H 2 O is 0.4%, Fe 2 (SO 4 ) 3 0.4%, MnSO 4 ·H 2 O is 0.5%, ZnSO 4 ·H 2 O is 0.5%, CaCl 2 0.1% and NaCl 0.1%) were evenly mixed and injected into t...

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Abstract

The invention relates to a repair system and a repair method for underground water polluted by trichloroethylene. The repair system for the underground water polluted by the trichloroethylene consists of an anaerobe reaction wall, an oxygen release reaction wall and an aerobe reaction wall, and is built and assembled according to the order of the anaerobe reaction wall, the oxygen release reaction wall and the aerobe reaction wall. The invention establishes the multifunctional biological permeable reaction wall system for in situ repair of the underground water polluted by the trichloroethylene, wherein an oxygen release agent provides sufficient oxygen for indigenous microorganisms, and three substances, namely residual activated sludge, immobilized trichloroethylene aerobic degrading bacteria and biological enzyme preparation related to trichloroethylene metabolism, are added respectively, so that the microorganism action is strengthened and the trichloroethylene biodegradation efficiency is improved. The invention provides an ideal and high-efficiency biological repair system which has wide application prospect for the underground water polluted by the trichloroethylene through stepped combination of the anaerobe action, the oxygen release action and the aerobe action.

Description

technical field [0001] The invention relates to the technical field of remediation of polluted groundwater, in particular to a remediation system and method for trichlorethylene (TCE) polluted groundwater. Background technique [0002] Groundwater pollution has become an environmental problem that cannot be ignored. At present, the types of pollutants in my country's shallow groundwater are complex and the concentration exceeds the standard, which has exceeded the natural attenuation capacity of the soil and groundwater system. The use of a single remediation method or a remediation technology often cannot quickly and efficiently control the diffusion and migration of multiple pollutions in the groundwater environment, which often leads to aggravated groundwater environmental pollution and increased difficulty in governance, which not only threatens the safety of drinking water for surrounding residents and increases the water consumption of enterprises. cost; it may even l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 赵林刘秀丽刘涉江谭欣毛国柱
Owner TIANJIN UNIV
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