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Soil environment-friendly restoring agent as well as preparation and application methods thereof

An application method and recovery agent technology, applied in the field of contaminated soil restoration, can solve problems such as easy consumption of soil nutrients, complex application methods, and damage to soil ecology, so as to increase the stabilization effect, increase and update soil organic matter, and strengthen restoration effect of effect

Inactive Publication Date: 2021-06-25
山东腾逸环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can reduce the bioavailability of heavy metals in the soil in a short period of time, usually the existing soil environmental restoration agents have poor restoration effects, and the nutrients in the soil are easily consumed during the restoration process, which may damage the soil. Disadvantages such as ecology, high cost, and complicated application methods

Method used

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  • Soil environment-friendly restoring agent as well as preparation and application methods thereof
  • Soil environment-friendly restoring agent as well as preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A soil environmental restoration agent, used for soil restoration of heavy metal-contaminated sites in industrially polluted land, is prepared from the following raw materials in parts by weight: 80 parts of bentonite, 20 parts of straw charcoal, 60 parts of cassava leaf powder, and 30 parts of organic fertilizer , 10 parts of papain, 20 parts of betaine, 10 parts of sodium phosphate, 10 parts of ferrous sulfate, 10 parts of limestone, 10 parts of Bacillus subtilis agent, 6 parts of citric acid-1-amide diethylene triamine; The number is 700 mesh, and the number of effective viable bacteria of Bacillus subtilis is 2.5×10 10 / g;

[0034] The preparation of the soil environmental restoration agent comprises the following steps:

[0035] Step 1: Prepare the above-mentioned bentonite, straw charcoal, cassava leaf powder, organic fertilizer, papain, betaine, sodium phosphate, ferrous sulfate, limestone, Bacillus subtilis bacterial agent, citric acid-1-amide diethylenetriamin...

Embodiment 2

[0042] A soil environmental restoration agent, suitable for soil remediation of low-concentration compound heavy metal-contaminated sites, is prepared from the following raw materials in parts by weight: 90 parts of bentonite, 25 parts of fruit shell charcoal, 65 parts of cassava leaf powder, 35 parts of organic fertilizer, 15 parts of papain, 25 parts of betaine, 15 parts of sodium dihydrogen phosphate, 15 parts of iron sulfate, 15 parts of limestone, 13 parts of Bacillus subtilis agent, 7 parts of citric acid-1-amide diethylene triamine, of which limestone The number is 600 mesh, and the effective number of live bacteria of Bacillus subtilis is 2.1×10 10 / g;

[0043] The preparation of the soil environmental restoration agent comprises the following steps:

[0044] Step 1: Prepare the above-mentioned bentonite, husk charcoal, cassava leaf powder, organic fertilizer, papain, betaine, sodium dihydrogen phosphate, iron sulfate, limestone, Bacillus subtilis agent, citric acid-1...

Embodiment 3

[0051] A soil environmental restoration agent, suitable for soil restoration of low-concentration compound heavy metal-contaminated sites, is prepared from the following raw materials in parts by weight: 100 parts of bentonite, 30 parts of straw charcoal, 70 parts of cassava leaf powder, 40 parts of organic fertilizer, papaya 20 parts of protease, 30 parts of betaine, 20 parts of phosphorus-based substances, 20 parts of iron-based materials, 20 parts of limestone, 15 parts of Bacillus subtilis bacteria agent, 8 parts of citric acid-1-amide diethylene triamine, of which the number of limestone mesh It is 550 mesh, and the effective number of viable bacteria of Bacillus subtilis is 2.2×10 10 / g, the iron-based material is made of iron oxide and ferrous sulfate in any ratio, and the phosphorus-based material is made of disodium hydrogen phosphate, sodium dihydrogen phosphate and sodium phosphate in any ratio;

[0052] The preparation of the soil environmental restoration agent co...

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Abstract

The invention discloses a soil environment-friendly restoring agent and a preparation and application method thereof. The soil environment-friendly restoring agent comprises the following raw materials in parts by weight: 80-100 parts of bentonite, 20-30 parts of an activated carbon material, 60-70 parts of cassava leaf powder, 30-40 parts of an organic fertilizer, 10-20 parts of papain, 20-30 parts of betaine, 10-20 parts of a phosphorus-based substance, 10-20 parts of an iron-based material, 10-20 parts of limestone, 10-15 parts of a bacillus subtilis microbial agent and 6-8 parts of citric acid-1-amide diethylenetriamine. The restoring agent is prepared by material preparation, material grinding and step-by-step material mixing and can be used for restoration of soil heavy metal pollution in industrial pollution land parcels. The soil restoration effect is enhanced, damage to soil ecology is reduced, and the restoring agent is suitable for soil restoration of a low-concentration heavy metal contaminated site and is low in cost and easy to use and operate.

Description

technical field [0001] The invention relates to the technical field of remediation of polluted soil, in particular to a soil environmental restoration agent and its preparation and application method. Background technique [0002] Environmental heavy metal pollution is a major environmental problem at home and abroad today, and soil heavy metal pollution has caused great harm to the agricultural production environment and human eating and living environment. Soil heavy metal pollution is generally caused by human activities such as mining, breeding, industrial production, and pesticide and fertilizer application. The more common heavy metal pollution elements include hexavalent chromium, mercury, cadmium, lead, arsenic, and copper. Heavy metals enter the soil environment through different channels. The heavy metals in the soil undergo complex physical and chemical reactions, and most of them remain in the soil in various forms. If it enters the human body through skin conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/00C05G3/80B09C1/08B09C1/10
CPCC09K17/40C05B7/00C05G3/00C05G3/80B09C1/08B09C1/10
Inventor 徐猛贾广鑫秦宝军王朋李天宙
Owner 山东腾逸环保科技有限公司