Organism fixing and permeating reaction wall system and stuffing for repairing polluted underground water

A groundwater remediation and osmotic reaction wall technology, which is applied in the direction of contaminated groundwater/leachate treatment, water pollutants, biological water/sewage treatment, etc., can solve the problem of reducing the effect of groundwater bioremediation, additional microbial loss, and increasing repair costs, etc. problems, to achieve the effect of slowing down the oxygen release rate, increasing biomass, and avoiding loss

Inactive Publication Date: 2007-11-07
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in addition to the above problems still exist, due to the flow of groundwater, the weak affinity between bacteria and soil particles or media, etc., the loss of external microorganisms is serious, which not only reduces the bioremediation effect of groundwater, but also increases the remediation effect. cost

Method used

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  • Organism fixing and permeating reaction wall system and stuffing for repairing polluted underground water

Examples

Experimental program
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Effect test

Embodiment 1

[0026] 1) The production process of the oxygen-releasing material solid particles is: the CaO 2 , (NH 4 ) 2 SO 4 、KH 2 PO 4 , trace elements (by MgSO 4 ·7H 2 O, Fe 2 (SO 4 ) 3 , MnSO 4 ·H 2 O, ZnSO 4 ·H 2 O and NaCl), coarse sand, and cement are mixed evenly, and after adding water, they are sent to a granulator for granulation to obtain solid oxygen-releasing material particles (with a particle size of 1.5 cm). The mass percent of above-mentioned mixture is as follows: CaO 2 5%; (NH 4 ) 2 SO 4 40%; KH 2 PO 4 10%; coarse sand 15%; cement 10%; water 15%; trace elements 5% (of which MgSO 4 ·7H 2 O is 1%, Fe 2 (SO 4 ) 3 1%, MnSO 4 ·H 2 O is 1%, ZnSO 4 ·H 2 O is 1%, NaCl is 1%).

[0027] 2) Immobilization method of microorganisms: Dissolve sodium alginate in water, add activated carbon, and mix with the suspension of Ochrobactrum anthropi, which has the function of degrading aniline, in a volume ratio of 1:1. Pour the mixture into calcium chloride solu...

Embodiment 2

[0030] 1) The production process of the oxygen-releasing material solid particles is: the CaO 2 , (NH 4 ) 2 SO 4 、KH 2 PO 4 , trace elements (by MgSO 4 ·7H 2 O, Fe 2 (SO 4 ) 3 , MnSO 4 ·H 2 O, ZnSO 4 ·H 2 O and NaCl), coarse sand, and cement are mixed evenly, and after adding water, they are sent to a granulator for granulation to obtain solid particles of oxygen-releasing material (particle size: 2 cm). The mass percent of above-mentioned mixture is as follows: CaO 2 12%; (NH 4 ) 2 SO 4 25%; KH 2 PO 4 25%; coarse sand 8%; cement 13%; water 13%; trace elements 4% (of which MgSO 4 ·7H 2 O is 0.8%, Fe 2 (SO 4 ) 3 0.8%, MnSO 4 ·H 2 O is 0.8%, ZnSO 4 ·H 2 O is 0.8%, NaCl is 0.8%).

[0031] 2) Immobilization method of microorganisms: Dissolve sodium alginate in water, add activated carbon, and mix with the suspension of white-rot fungus Phanerochaete chrysosprium burdsall, which has the function of degrading organic matter such as chlorinated aromatic co...

Embodiment 3

[0034] 1) The production process of oxygen-releasing material solid particles is: MgO 2 , (NH 4 ) 2 SO 4 、KH 2 PO 4 , trace elements (by MgSO 4 ·7H 2 O, Fe 2 (SO 4 ) 3 , MnSO 4 ·H 2 O, ZnSO 4 ·H 2 O and NaCl), coarse sand, and cement are mixed evenly, and after adding water, they are sent to a granulator for granulation to obtain solid oxygen-releasing material particles (with a particle size of 1.5 cm). The mass percent of above-mentioned mixture is as follows: MgO 2 10%; (NH 4 ) 2 SO 4 30%; KH 2 PO 4 24%; coarse sand 10%; cement 15%; water 8%; trace elements 3% (of which MgSO 4 ·7H 2 O is 0.6%, Fe 2 (SO 4 ) 3 0.6%, MnSO 4 ·H 2 O is 0.6%, ZnSO 4 ·H 2 O is 0.6%, NaCl is 0.6%).

[0035] 2) Immobilization method of microorganisms: dissolve polyvinyl alcohol in water, add sodium alginate, and mix evenly with the suspension of Ochrobactrum anthropi which has the function of degrading aniline at a volume ratio of 3:1, Use a syringe to inject the mixture...

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Abstract

The present invention relates to one kind of organism fixing and permeating reaction wall system, stuffing and process for repairing organic matter polluted underground water. The reaction wall system consists of an oxygen-releasing reaction wall and a biological degrading wall following the oxygen-releasing reaction wall. The oxygen-releasing reaction wall is provided with solid granular stuffing of oxygen-releasing material, and the biological degrading wall is provided with immobilized microbes. The reaction wall system can change the oxygen deficient and oligotrophic state of underground water, regulate pH value and fix microbes, so as to constitute an ideal and efficient organic pollutant aerobic biodegrading system, and possesses wide application foreground.

Description

technical field [0001] The invention relates to the technical field of ecological restoration of polluted environment, in particular to a bio-fixed permeable reaction wall system, filler and method for restoration of organic-contaminated groundwater. Background technique [0002] Groundwater pollution is a serious environmental problem at present. Among the three major types of groundwater pollution, organic pollution has surpassed heavy metal pollution and radioactive pollution, and has become the main form of groundwater pollution. [0003] In the osmotic reaction wall technology using the aerobic biodegradation mechanism, the following two methods are often used for in-situ remediation of organic matter-contaminated groundwater: (1) injecting oxygen-releasing compounds (MgO 2 or CaO 2 ), or while injecting oxygen-releasing compounds, nutrients such as nitrogen and phosphorus are added to stimulate the indigenous microorganisms that are in a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/30C02F103/06
Inventor 刘涉江李鑫钢赵林齐云刘秀丽朱琳
Owner TIANJIN UNIV
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