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Heavy metal soil repairing agent, and preparation method and use method thereof

A soil remediation agent and heavy metal technology, applied in the field of soil remediation, can solve the problems of soil secondary pollution, etc., and achieve the effect of controlling soil pollution, restoring arableness, and shortening the remediation period

Active Publication Date: 2018-07-13
HENAN BAIYU PLANT IMMUNE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key to this technology is the remediation agent that acts as a solidification and stabilization agent. However, most remediation agents have secondary pollution to the soil. Therefore, it is of great significance to develop a new type of soil remediation agent that is cheap, environmentally friendly, easy to use, and high-efficiency.

Method used

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  • Heavy metal soil repairing agent, and preparation method and use method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] Get the raw materials for preparing the heavy metal soil remediation agent in the following parts by weight: 10 parts of polyacrylamide, 15 parts of zeolite, 10 parts of distilled water, 10 parts of cellulose xanthate calcium salt, 5 parts of modified apatite, 10 parts of molasses, 5 parts of biochar, 3 parts of phosphate compound, 3 parts of compound microbial agent.

[0024] Wherein, the preparation method of the cellulose xanthate calcium salt is as follows: add 400 mL of a 30% mass concentration sodium bicarbonate solution for every 10 g of water hyacinth straw powder, stir at a constant temperature of 38 ° C for half an hour, centrifuge, and retain the lower layer of solids. Wash with distilled water until the pH value is stable, centrifuge, discard the liquid phase; add 100mL of 10% mass concentration sodium hydroxide solution, stir for half an hour, then slowly add 0.15mL of CS 2 , stirred and reacted at 35°C for 1.5h, and carried out solid-liquid separation. The...

Embodiment 2

[0034] Get the raw materials for preparing the heavy metal soil remediation agent in the following parts by weight: 15 parts of polyacrylamide, 10 parts of zeolite, 15 parts of distilled water, 15 parts of cellulose xanthate calcium salt, 10 parts of modified apatite, 10 parts of molasses, 8 parts of biochar, 5 parts of phosphate compounds, and 1 part of compound microbial agent.

[0035]Wherein, the preparation method of the cellulose xanthate calcium salt is as follows: add 350mL of 35% mass concentration sodium bicarbonate solution for every 10g of water hyacinth stalk powder, stir at a constant temperature of 45°C for half an hour, centrifuge, and retain the lower layer solid, Wash with distilled water until the pH value is stable, centrifuge, and discard the liquid phase; add 150 mL of 10% mass concentration sodium hydroxide solution, stir for half an hour, and then slowly add 0.15 mL of CS 2 , stirred and reacted at 40°C for 1 hour, and carried out solid-liquid separatio...

Embodiment 3

[0045] Get the raw materials for preparing the heavy metal soil remediation agent in the following parts by weight: 13 parts of polyacrylamide, 12 parts of zeolite, 15 parts of distilled water, 13 parts of cellulose xanthate calcium salt, 8 parts of modified apatite, 8 parts of molasses, 7 parts of biochar, 4 parts of phosphate compound, 2 parts of compound microbial agent.

[0046] Wherein, the preparation method of the cellulose xanthate calcium salt is as follows: add 380mL of 33% mass concentration sodium bicarbonate solution for every 10g of water hyacinth stalk powder, stir at a constant temperature of 40°C for half an hour, centrifuge, and retain the lower layer solid, Wash with distilled water until the pH value is stable, centrifuge, discard the liquid phase; add 125ml of 10% mass concentration sodium hydroxide solution, stir for half an hour, then slowly add 0.15mL of CS 2 , stirred and reacted at 38°C for 1.5h, and carried out solid-liquid separation, and adjusted t...

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Abstract

The invention provides a heavy metal soil repairing agent, a preparation method and use method thereof. The heavy metal soil repairing agent is prepared from following raw materials in part by weight:polyacrylamide, zeolite, distilled water, cellulose xanthonate, modified apatite, molasses, charcoal, a phosphate compound and a complex microbial agent. The preparation method comprises the following steps: uniformly mixing the phosphate compound, the molasses and the charcoal, adding the complex microbial agent to ferment, adding the polyacrylamide, the zeolite, the cellulose xanthonate, the modified apatite and the distilled water in an obtained mixture, uniformly mixing, drying to obtain a mixture, and crushing the mixture to obtain the heavy metal soil repairing gent. The heavy metal soil repairing agent disclosed by the invention has the advantages of small dosage and efficiency when in use, short repairing period, capabilities of reducing heavy metal content in soil and effectivelytreating soil pollution, and capabilities of improving the soil fertility while repairing a soil ecological system to recover the cultivability of the soil as soon as possible.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a heavy metal soil remediation agent and its preparation method and use method. Background technique [0002] In recent years, the problem of heavy metal pollution in my country's soil has become increasingly prominent, posing a serious threat to the ecological environment, food safety and human health, which cannot be ignored. Waste gas, waste water, and waste residues discharged from industries such as dyestuffs, chemicals, tanning, mineral mining, smelting, and processing contain a large amount of heavy metals. Into the soil through other methods, resulting in an increase in the content of heavy metals in the soil, especially the exchangeable heavy metals, which are directly absorbed and enriched by crops, directly threatening human health. Compared with air pollution and water pollution, heavy metal soil pollution is the most difficult to solve. This is because soi...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08C09K101/00
CPCB09C1/08B09C2101/00C09K17/40C09K2101/00
Inventor 代彦霞陈云
Owner HENAN BAIYU PLANT IMMUNE TECH CO LTD
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