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A kind of mineralizer for treating soil heavy metal ions and its synthesis method

A technology of heavy metal ions and mineralizers, applied in the field of soil pollution control and environmental protection, can solve the problems of long restoration period, decreased soil fertility, damaged soil structure, etc., and achieves the effects of low cost, quick effect and simple operation.

Active Publication Date: 2018-01-02
CHENGDU KEHENG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Foreign soil / soil replacement method: The foreign soil method and soil replacement method have the disadvantages of consuming a lot of financial and manpower, so they are only suitable for the treatment of small areas of soil in heavily polluted areas
[0006] Mineral adsorption method: it has a large amount of engineering, high investment costs, and destroys the soil structure, resulting in a decrease in soil fertility, and also has to deal with the replaced dirty soil
[0007] Washing method: The washing method can be conveniently recycled, but after leaching the soil polluted by heavy metals, the content of several nutrients such as potassium, calcium, magnesium, iron, and manganese in the soil will decrease, and some of the nutrients The effectiveness is also reduced, and the amount of work is large
[0008] Bioremediation: Bioremediation has a better effect and is easy to operate, but its repair period is longer, and the absorption of heavy metals by plants is passive due to the large difference in environmental concentration

Method used

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  • A kind of mineralizer for treating soil heavy metal ions and its synthesis method
  • A kind of mineralizer for treating soil heavy metal ions and its synthesis method
  • A kind of mineralizer for treating soil heavy metal ions and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Assume with following ratio: a kind of mineralizer for processing soil heavy metal ion of the present invention is formulated in parts by weight, by 5 parts of methyl vinyl ether, 20 parts of maleic anhydride, 15 parts of ethyl acetate, 8 parts Sodium persulfate, 0.05 parts lauryl peroxide, 5 parts ammonium dihydrogen phosphate, 8 parts sodium thiosulfate, 20 parts sodium carbonate, 10 parts water

[0029] Preparation: first add water to the reaction kettle, stir (stirring speed is 120-180 rpm), then add maleic anhydride, heat up to 65°C, then add ethyl acetate and lauryl peroxide, stir for 20 minutes Then add methyl vinyl ether, constant temperature polymerization reaction for 3 hours; then add sodium thiosulfate and sodium persulfate, react for 1 hour, finally add ammonium dihydrogen phosphate and sodium carbonate, stir for 20 minutes, stop stirring after mixing evenly, naturally Cooling is the product.

[0030] The experimental results of this product's ability to r...

Embodiment 2

[0037] With 10 parts of methyl vinyl ether, 15 parts of maleic anhydride, 20 parts of ethyl acetate, 5 parts of sodium persulfate, 0.1 parts of lauryl peroxide, 8 parts of ammonium dihydrogen phosphate, 5 parts of sodium thiosulfate, 10 parts Part sodium carbonate, 20 parts water;

[0038] Preparation: first add water to the reaction kettle, stir (stirring speed is 120-180 rpm), then add maleic anhydride, heat up to 75°C, then add ethyl acetate and lauryl peroxide, stir for 30 minutes Then add methyl vinyl ether, constant temperature polymerization reaction for 4 hours; then add sodium thiosulfate and sodium persulfate, react for 2 hours, finally add ammonium dihydrogen phosphate and sodium carbonate, stir for 30 minutes, stop stirring after mixing evenly, naturally Cooling is the product.

[0039] The experimental results of this product's ability to remove heavy metal ions (compared with GB15618-2008 "Soil Environmental Quality Standards") are shown in Table 2.

[0040] Sp...

Embodiment 3

[0046] With 15 parts of methyl vinyl ether, 5 parts of maleic anhydride, 10 parts of ethyl acetate, 6 parts of sodium persulfate, 0.8 parts of lauryl peroxide, 6 parts of ammonium dihydrogen phosphate, 6 parts of sodium thiosulfate, 15 parts Part sodium carbonate, 30 parts water;

[0047] Preparation: first add water to the reaction kettle, stir (stirring speed is 120-180 rpm), then add maleic anhydride, heat up to 80°C, then add ethyl acetate and lauryl peroxide, stir for 30 minutes Then add methyl vinyl ether, constant temperature polymerization reaction for 4 hours; then add sodium thiosulfate and sodium persulfate, react for 2 hours, finally add ammonium dihydrogen phosphate and sodium carbonate, stir for 30 minutes, stop stirring after mixing evenly, naturally Cooling is the product.

[0048]The experimental results of this product's ability to remove heavy metal ions (compared with GB15618-2008 "Soil Environmental Quality Standards") are shown in Table 3.

[0049] Spra...

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Abstract

The invention discloses a mineralizer for treating soil heavy metal ions and a synthesis method thereof. The weight ratio of the mineralizer is 5-15 parts of methyl vinyl ether, 10-20 parts of maleic anhydride, 20-20 parts of 30 parts of ethyl acetate, 5‑8 parts of sodium persulfate, 0.05‑0.1 part of lauryl peroxide, 5‑8 parts of ammonium dihydrogen phosphate, 5‑8 parts of sodium thiosulfate, 10‑20 parts of sodium carbonate, 10 parts ‑30 parts water. The heavy metal ion mineralizer developed by the present invention has good mineralization ability for heavy metal ions, and can be widely used in farmland, industrial sites, Gobi, deserts and other places polluted by heavy metal ions, and can also be used in domestic sludge containing heavy metal ions It is a green and environmentally friendly agent for the treatment and restoration of industrial sludge, drilling waste fluid and oily sludge in oil fields.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to the technical field of soil pollution treatment, especially the treatment and restoration technology for soil, sandy land, oilfield drilling waste fluid, oily sludge, etc. polluted by heavy metal ions. Background technique [0002] Soil is a very important natural resource and the foundation of a country's agricultural development. As the foundation of agriculture, soil is the source of basic raw materials for human survival. The remediation of heavy metal-contaminated soil is a major problem nowadays, and the heavy metals mainly refer to several elements with significant biological toxicity such as Cd, Pb, Cr, Zn, Hg, and metalloid As, as well as common elements such as Mn, Ni, and Cu. element. [0003] Due to the characteristics of universality, concealment or latentness, irreversibility, indirect harmfulness and surface aggregation of heavy metal pollution, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40B09C1/08C09K101/00C09K103/00
Inventor 吴树林马江平张克江吴蘅
Owner CHENGDU KEHENG ENVIRONMENTAL PROTECTION TECH
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