Method for co-treating soil and groundwater pollutants by utilizing soil organisms and permeable reactive barrier

A technology of infiltration reaction wall and groundwater pollution, applied in biological water/sewage treatment, restoration of polluted soil, chemical instruments and methods, etc. Restoring functionality, improving processing quality, and wide-ranging effects

Inactive Publication Date: 2014-06-18
SHANGHAI QINGPENG METALLURGY ENG TECH
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Problems solved by technology

However, there are many problems at the same time: ① Applicable strains need to be tested repeatedly and cultivated for a long time, and the technical threshold is high; ② If foreign strains are used, it may cause microbial imbalance in the soil, increase environmental load, and there is a risk of biological contamination; ③ Bacteria It cannot be recycled and cannot realize circular economy; ④It is less helpful to increase soil fertility; ⑤It is difficult to restore groundwater, etc.

Method used

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Embodiment Construction

[0036] Below in conjunction with embodiment the present invention is described in further detail.

[0037] A method for synergistically treating soil and groundwater pollution by using soil organisms and a permeable reaction wall, comprising the following steps:

[0038] Step 1: Determination and distribution of the number of earthworms: according to the type, form, and concentration of pollutants in the soil, selectively release production worms, ringworms, or Daping No. 2 species; the stocking density is: production worms 9,000-32,000 / ㎡, 800-1,700 adult worms / ㎡, and 1,800-3,200 worms / ㎡ for Daping No. 2 species;

[0039] Step 2: Cultivation of earthworms: After the earthworms are put in, for the slightly polluted soil, the recovery time for breeding is 2.5 months to 3.5 months; for the moderately polluted soil, the recovery time is about 1.5 months to 2.5 months; For heavily polluted soil, the recovery time is about half a month to one and a half months; the judgment of the ...

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Abstract

The invention discloses a method for co-treating soil and groundwater pollutants by utilizing soil organisms and a permeable reactive barrier. The method comprises the following steps: 1. determining the quantity of earthworms, and putting in; 2. breeding the earthworms; 3. mounting the permeable reaction barrier; and 4. recycling the earthworms. Compared with the prior art, the method has the advantages that on the basis of the prior art and according to the biochemistry and soil ecology principle, pollutants in the soil can be treated by adopting the soil organisms such as earthworms, and groundwater can be treated by synergistically adopting the improved permeable reactive barrier and a block soil organism culture area can be formed, so that the purposes of removing pollutants in the soil and groundwater and realizing the circular economy can be achieved.

Description

[0001] technical field [0002] The invention relates to a treatment method for soil and groundwater pollution, in particular to a method for synergistically treating soil and groundwater pollution by utilizing soil organisms and a permeable reaction wall. Background technique [0003] my country's soil and groundwater pollutants are mainly heavy metals and organic substances, such as As, Cd, Cr, Hg, Pb, VOCs, SVOCs, POPs, etc., which have the characteristics of wide pollution range, difficult identification, difficult treatment, and easy migration. The methods currently used in China can be divided into physical methods, chemical methods and biological methods (including plant methods and microbial methods). [0004] Among them, the microbial method needs to put bacteria into the soil and groundwater, and treat pollutants through the metabolism of microorganisms, which can achieve a certain effect. However, there are many problems at the same time: ① Applicable strains...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/32B09C1/00
Inventor 周永峰周明
Owner SHANGHAI QINGPENG METALLURGY ENG TECH
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