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Arsenic pollution repairing agent for saline-alkali soil

A technology for arsenic pollution and saline-alkali land, applied in the direction of organic fertilizers, fertilizer mixtures, chemical instruments and methods, etc., can solve the problems of changing soil physical and chemical properties, secondary pollution, etc., and achieve the effects of small environmental impact, abundant sources, and low material cost

Inactive Publication Date: 2018-07-06
WEIFANG YOURONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chemical stabilization technology is developed on the basis of stabilization / solidification technology. Compared with stabilization / solidification technology, it has the advantages of small volume increase ratio and less damage to soil structure, but chemical stabilization technology is likely to cause secondary pollution , there is also the problem of changing the physical and chemical properties of the soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The arsenic pollution remediation agent for saline-alkali land comprises the following raw materials in parts by weight: 50 parts of cross-linked attapulgite; 50 parts of deformed starch; 30 parts of methyl methacrylate-styrene copolymer; 0.04 part of sodium dodecylsulfonate; 0.02 parts of potassium sulfate; 0.02 parts of urea; 65 parts of carbide slag; 0.5 parts of microbial mixed bacteria solution.

[0016] The cross-linked attapulgite is prepared by the following method: dissolve aluminum trichloride in water, titrate to pH=4 with NaOH aqueous solution to obtain an aluminum chloride solution, and reserve it for later use; disperse attapulgite in water, stir Evenly, the attapulgite dispersion liquid is obtained; add the prepared aluminum chloride solution into the attapulgite dispersion liquid, stir continuously until the mixed solution becomes turbid, let it stand still, obtain precipitation, filter, dry the precipitate, and pulverize into small granules to obtain cr...

Embodiment 2

[0019] The arsenic pollution restoration agent for saline-alkali land comprises the following raw materials in parts by weight: 55 parts of cross-linked attapulgite; 50 parts of deformed starch; 35 parts of methyl methacrylate-styrene copolymer; 0.07 part of sodium dodecylsulfonate; 0.03 parts of potassium sulfate; 0.03 parts of urea; 70 parts of carbide slag; 0.8 parts of microbial mixed bacteria solution.

[0020] The cross-linked attapulgite is prepared by the following method: dissolve aluminum trichloride in water, titrate to pH=4 with NaOH aqueous solution to obtain an aluminum chloride solution, and reserve it for later use; disperse attapulgite in water, stir Evenly, the attapulgite dispersion liquid is obtained; add the prepared aluminum chloride solution into the attapulgite dispersion liquid, stir continuously until the mixed solution becomes turbid, let it stand still, obtain precipitation, filter, dry the precipitate, and pulverize into small granules to obtain cr...

Embodiment 3

[0023] The arsenic pollution restoration agent for saline-alkali land comprises the following raw materials in parts by weight: 55 parts of cross-linked attapulgite; 60 parts of deformed starch; 39 parts of methyl methacrylate-styrene copolymer; 0.07 part of sodium dodecylsulfonate; 0.02 parts of potassium sulfate; 0.02 parts of urea; 80 parts of carbide slag; 0.8 parts of microbial mixed bacteria solution.

[0024] The cross-linked attapulgite is prepared by the following method: dissolve aluminum trichloride in water, titrate to pH=4 with NaOH aqueous solution to obtain an aluminum chloride solution, and reserve it for later use; disperse attapulgite in water, stir Evenly, the attapulgite dispersion liquid is obtained; add the prepared aluminum chloride solution into the attapulgite dispersion liquid, stir continuously until the mixed solution becomes turbid, let it stand still, obtain precipitation, filter, dry the precipitate, and pulverize into small granules to obtain cr...

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PUM

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Abstract

The invention discloses an arsenic pollution repairing agent for saline-alkali soil. The repairing agent comprises the following raw materials in parts by weight: 50-60 parts of cross-linked attapulgite, 50-60 parts of deformed starch, 30-40 parts of a methyl methacrylate-styrene copolymer, 0.02-0.2 part of sodium laurylsulfonate, 0.01-0.03 part of potassium persulfate, 0.01-0.03 part of urea, 60-90 parts of carbide slag and 0.5-1 part of a microbial mixed bacterial solution. According to the invention, a combined technology of attapulgite solidification and stabilization and microbial solidification and stabilization is adopted, and the goal of solidifying heavy metals can be achieved through a quantitative chemical reaction (such as ion exchange, coordination bond or complexation and thelike) of a plurality of polar functional groups existing on the microbial surfaces with arsenic ions. The composite repairing agent can improve the repairing rate and efficiency of saline-alkali soil, has little influence on the environment, and is suitable for promotion and application.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali land treatment, and in particular relates to an arsenic pollution restoration agent for saline-alkali land. Background technique [0002] The content of arsenic in saline-alkaline soil is high, and arsenic is very active in saline-alkali soil, and it is easy to migrate to crops, surface water and groundwater, causing arsenic pollution in food and drinking water. Vascular and nervous system diseases. [0003] The remediation technologies for heavy metal-contaminated soil mainly include chemical leaching, plant absorption, stabilization / solidification, and electric remediation. Among them, the chemical rinsing operation is difficult, prone to secondary pollution, long phytoremediation cycle, low efficiency and high cost of electric remediation, so engineering applications are relatively seldom. [0004] In comparison, the stabilization / solidification technology has the advantages of low cost...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 王胜
Owner WEIFANG YOURONG IND
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