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Method for remediating hydrochloric ether polluted underground water

A chlorinated hydrocarbon and groundwater technology, applied in the treatment of polluted groundwater/leachate, water pollutants, water/sewage treatment, etc., can solve the problems of slow degradation rate, long reaction duration, low cost, etc. Oxidation process, reduced toxic effects, low cost effect

Inactive Publication Date: 2018-11-27
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Technical problems to be solved: microbial technology has low cost, long reaction duration and can completely mineralize most organic pollutants, but its degradation rate is slow

Method used

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  • Method for remediating hydrochloric ether polluted underground water
  • Method for remediating hydrochloric ether polluted underground water
  • Method for remediating hydrochloric ether polluted underground water

Examples

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Embodiment 1

[0019](1) Add 200 mL of activated sludge and 700 mL of inorganic salt medium into a 1L anaerobic culture bottle, and adjust the pH to a range of 6.5-7.0, then use Teflon surface rubber diaphragm and aluminum crimp to seal, and use a sterile syringe to add PCE solution, so that the concentration gradient of PCE solution in the anaerobic culture bottle is adjusted to 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 9, 10 mg / L, each gradient cultured for 7 days. Finally, the culture bottle was placed in a constant temperature incubator at 25°C for 3 months in shade. The gradient pressure acclimatization method was used for cultivation, and the pinhole left on the cover was sealed with silicone caulk to prevent volatilization when sampling. All operations were performed in an anaerobic incubator. The composition of inorganic salt medium includes: K 2 HPO 4 -3H 2 O, 1.05 g / L; NaH 2 PO 4 -H 2 O, 0.25 g / L; NH 4 Cl, 0.49 g / L; N(CH 2 CO 2 Na) 3 -H 2 O, 0.03 g / L; MgSO 4 -7H 2 O, 0.05 g / L; ...

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Abstract

The invention relates to a method for remediating hydrochloric ether polluted underground water. The method comprises the following steps: taking lamellated bimetal hydroxide as a packaging agent to modify nanometer zero-valent iron, thereby acquiring packaged type nanometer zero-valent iron nZVI-LDHs; preparing chlorohydrocarbon dominant degrading bacteria containing Clostridium_sp._FCB45, methylotrophic_bacterium_RS-X3, Rhodocyclales_bacterium_TP139 and bacterium_B3C1-6; inoculating the cultured solution of chlorohydrocarbon dominant degrading bacteria, adding into hydrochloric ether polluted underground water and adding the packaged type nanometer zero-valent iron nZVI-LDHs. The method according to the invention is simple in process, low in cost and obvious in effect and has no secondary pollution to the underground water. The method applied to in-situ remediation of the underground water is economically and technically feasible.

Description

technical field [0001] The invention relates to the field of groundwater pollution restoration, in particular to a method for repairing groundwater polluted by chlorinated hydrocarbons in combination with coated nanometer zero-valent iron combined with dominant degrading bacteria. Background technique [0002] With the rapid development of industry and agriculture, various organic compounds are produced and used, resulting in a large amount of toxic and harmful pollutants entering the soil and groundwater, causing a series of environmental problems. Chlorinated hydrocarbon organic compounds are important chemical raw materials and organic solvents, widely used in chemical industry, medicine, leather, electronics and other industries, making them the most common organic pollutants in groundwater, especially chloroform (CF), tetrachloride Pollution from single / double carbon chlorinated hydrocarbon solvents such as chlorinated carbon (CT), trichloroethylene (TCE), and tetrach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/28C02F1/70C02F101/36C02F103/06
CPCC02F1/705C02F3/28C02F3/34C02F2101/36C02F2103/06
Inventor 王晴宋昕唐诗月魏昌龙
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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