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Solidifying agent for stabilizing heavy metal Zn in soil and using method thereof

A heavy metal and curing agent technology, applied in the field of environmental engineering, can solve the problems of large amount of curing agent added, accelerated heavy metal ion leaching and environmental risks, etc., and achieves the effects of easy operation, prevention of leaching and transmission with the outside world, and low preparation cost.

Inactive Publication Date: 2017-02-15
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: In view of the excessive addition of curing agent in the current needle curing stabilization method, the cracking of the cured body caused by long-term stress load and dry-wet cycle has accelerated the leaching of heavy metal ions in the cured body and environmental risks High problem, the present invention provides a kind of solidifying agent of heavy metal Zn in stable soil and its application method, the present invention provides a kind of solidifying agent of heavy metal Zn in stable soil and its application method, the present invention firstly through natural plant, The part that has an attractive effect on the heavy metal Zn is fermented to extract beneficial ingredients, and then the carbonized bamboo particles are used as a carrier to adsorb the fermented extract, and finally mixed with vermiculite and other substances, and used to prepare a stable soil The curing agent of heavy metal Zn and its use method, the present invention solidifies Zn metal and is stable, does not seep out, and has no harm to the environment at the same time

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0018] The preparation method of the microbial granules is as follows: in parts by weight, take 30 to 35 parts of rhododendron roots, 28 to 30 parts of poplar roots and 42 to 45 parts of pure water, put them into a juice extractor to squeeze the juice, and collect the juice , according to the mass ratio of 5: 2: 1, take the squeezed juice, peptone and agar, stir evenly, put it into a fermenter, then add sphagnum moss with 4-6% of the squeezed juice quality, set the temperature at 24-32°C, and Stir and ferment at 120r / min for 32-35h; after the above-mentioned fermentation, put the fermentation mixture in the fermenter into a centrifuge, centrifuge at 5000r / min for 8-12min, collect the supernatant, and use a mass fraction of 10% hydrogen The sodium oxide solution adjusts the pH to 7.5-8.0 to obtain microbial bacterial liquid, which is set aside; according to the solid-to-liquid ratio of 1:3, fresh bamboo tubes and 25% hydrogen peroxide solution are put into a water bath, and the ...

example 1

[0021] A curing agent for stabilizing heavy metal Zn in soil and its use method, characterized in that: in parts by weight, the curing agent for stabilizing heavy metal Zn in soil consists of the following four components: 53 parts of microbial particles, 32 parts of leeches Stone, 19 parts of calcium lignosulfonate and 16 parts of plant ash.

[0022] The preparation method of the described microbial granules is as follows: in parts by weight, get 30 parts of rhododendron roots, 30 parts of poplar roots and 45 parts of pure water, put them into a juice extractor to squeeze the juice, collect the squeezed juice, and press the mass ratio of 5: 2:1, take the squeezed juice, peptone and agar, stir them evenly, put them into a fermenter, then add sphagnum moss with a mass of 4% squeezed juice, set the temperature at 24°C, stir and ferment at 120r / min for 32h; After the end, put the fermentation mixture in the fermenter into a centrifuge, centrifuge at 5000r / min for 8min, collect th...

example 2

[0026] A curing agent for stabilizing heavy metal Zn in soil and its use method, characterized in that: in parts by weight, the curing agent for stabilizing heavy metal Zn in soil consists of the following four components: 56 parts of microbial particles, 26 parts of leeches Stone, 18 parts of calcium lignosulfonate and 12 parts of plant ash.

[0027]The preparation method of the described microbial granules is as follows: in parts by weight, get 30 parts of rhododendron roots, 30 parts of poplar roots and 45 parts of pure water, put them into a juice extractor to squeeze the juice, collect the squeezed juice, and press the mass ratio of 5: 2:1, take the squeezed juice, peptone and agar, stir evenly, put it into a fermenter, add peat moss with 6% of the squeezed juice quality, set the temperature at 32°C, stir and ferment at 120r / min for 35h; After the end, put the fermentation mixture in the fermenter into a centrifuge, centrifuge at 5000r / min for 12min, collect the supernata...

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Abstract

The invention relates to a solidifying agent for stabilizing heavy metal Zn in soil and a using method thereof, and belongs to the technical field of environmental engineering. The solidifying agent for stabilizing the heavy metal Zn in the soil and the using method thereof are provided for aiming at the problems that according to solidification stabilization methods in the prior art, the amount of a solidifying agent is too large, cracking of a solidified body may be caused due to the effect of a long-term stress load and wet and dry cycle to accelerate leaching of heavy metal ions in the solid, and the environmental risk is high. First, a natural plant part with heavy metal Zn attraction effect is fermented for extraction of useful components, then carbonized bamboo particles are used as a carrier for adsorption of fermentation extract, and finally, the fermentation extract is mixed with vermiculite and other materials for preparation of the solidifying agent for stabilizing the heavy metal Zn in the soil for use. The solidifying agent is stable in Zn metal solidification, may not seep out, and has no harm to the environment.

Description

technical field [0001] The invention relates to a solidifying agent for stabilizing heavy metal Zn in soil and a using method thereof, belonging to the technical field of environmental engineering. Background technique [0002] At present, heavy metal pollution has a great impact on people's quality of life and physical health, seriously damages public health, endangers environmental safety, and affects social stability. Heavy metal pollution has the characteristics of long-term, cumulative, latent and irreversible. It is harmful, difficult to control, and high in cost. In particular, the risk of ecotoxicity induced by heavy metals has attracted more and more attention, especially those related to food production. Soil heavy metal pollution has received widespread attention. [0003] At present, the main treatment method of heavy metal pollution is to reduce the toxicity of waste residue through chemical reaction, and then carry out subsequent treatment. However, on the on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/10B09C1/08
CPCC09K17/40B09C1/08B09C1/10B09C2101/00
Inventor 赵远孙辰鹏孙向武杨泽平陈江杰殷鸿洋顾健谢寅徐腾陶利华聂莉陈婷宋瑜
Owner CHANGZHOU UNIV
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