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Conditioner for repairing heavy metal contaminated soil and preparing method for conditioner

A technology of polluted soil and conditioner, applied in the field of soil remediation, can solve problems such as soil structure, texture damage, unsuitable for cultivation, etc., and achieve the effect of improving texture and structure, increasing salt content, and increasing available nitrogen content

Inactive Publication Date: 2016-05-18
JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved is: in order to solve the damaged soil structure and texture of the repaired soil, which is not suitable for cultivation, provide an effective and rapid soil repair conditioner to restore the texture and structure of the soil after repair, so that it is suitable for cultivation. farming

Method used

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  • Conditioner for repairing heavy metal contaminated soil and preparing method for conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A conditioner for remediation of heavy metal-contaminated soil, in parts by weight, the conditioner consists of:

[0023] 18 parts of oyster powder, 11 parts of biogas residue, 4 parts of cow dung, 3 parts of selenium nitrate, 4 parts of calcium molybdate, 2 parts of barium phosphate, 5 parts of superphosphate, 50 parts of calcareous soil, 6 parts of calcium oxalate, sugarcane ash 7 parts, palygorskite 3 parts, bamboo powder 2 parts, yeast powder 1 part and polydimethyldiallylammonium chloride 4 parts.

[0024] Also included are 0.1 parts of cellulolytic bacteria agent and 0.3 parts of silicate bacteria agent.

[0025] The preparation method of a conditioner for remediation of heavy metal-contaminated soil comprises the following steps:

[0026] (1) Mix cow dung and yeast powder evenly, and place it at 42°C for 10 hours before use;

[0027] (2) After mixing the calcareous soil and palygorskite, carry out mechanical crushing, and then transfer the crushed material to t...

Embodiment 2

[0032] A conditioner for remediation of heavy metal-contaminated soil, in parts by weight, the conditioner consists of:

[0033] 33 parts of oyster powder, 17 parts of biogas residue, 10 parts of cow dung, 11 parts of selenium nitrate, 9 parts of calcium molybdate, 8 parts of barium phosphate, 11 parts of superphosphate, 85 parts of calcareous soil, 10 parts of calcium oxalate, sugar cane ash 12 parts, palygorskite 10 parts, bamboo powder 8 parts, yeast powder 3 parts and polydimethyldiallylammonium chloride 8 parts.

[0034] Also included are 1.5 parts cellulolytic bacteria and 1.8 parts silicate bacteria.

[0035] The preparation method of a conditioner for remediation of heavy metal-contaminated soil comprises the following steps:

[0036] (1) Mix cow dung and yeast powder evenly, and place it at 50°C for 48 hours for later use;

[0037] (2) After mixing the calcareous soil and palygorskite, carry out mechanical crushing, and then transfer the crushed material to the mixi...

Embodiment 3

[0042] A conditioner for remediation of heavy metal-contaminated soil, in parts by weight, the conditioner consists of:

[0043] 25 parts of oyster powder, 14 parts of biogas residue, 7 parts of cow dung, 7 parts of selenium nitrate, 6 parts of calcium molybdate, 5 parts of barium phosphate, 8 parts of superphosphate, 67 parts of calcareous soil, 8 parts of calcium oxalate, 9 parts of sugarcane ash 6 parts, 6 parts of palygorskite, 5 parts of bamboo powder, 2 parts of yeast powder and 6 parts of polydimethyldiallylammonium chloride.

[0044] Also included are 0.8 parts of cellulolytic bacteria agent and 1.1 parts of silicate bacteria agent.

[0045] The preparation method of a conditioner for remediation of heavy metal-contaminated soil comprises the following steps:

[0046] (1) Mix cow dung and yeast powder evenly, and place it at 46°C for 30 hours for later use;

[0047] (2) After mixing the calcareous soil and palygorskite, carry out mechanical crushing, and then transfe...

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Abstract

The invention discloses a conditioner for repairing heavy metal contaminated soil and a preparing method for the conditioner. The conditioner comprises, by weight part, 18-33 parts of oyster powder, 11-17 parts of biogas residue, 4-10 parts of cow dung, 3-11 parts of selenium nitrate, 4-9 parts of calcium molybdate, 2-8 parts of barium phosphonate, 5-11 parts of superphosphate, 50-85 parts of calcareous soil, 6-10 parts of calcium oxalate, 7-12 parts of sugarcane ash, 3-10 parts of palygorskite, 2-8 parts of bamboo powder, 1-3 parts of yeast powder and 4-8 parts of poly dimethyl diallyl ammonium chloride and further comprises 0.1-1.5 parts of cellulose decomposition bacterium agent and 0.3-1.8 parts of silicate bacterium. By means of the prepared conditioner, the content of organic matter in the soil, the content of salt in the soil and the content of available nitrogen in the soil are obviously increased, the texture and the structure of the soil are improved, and the conditioner is suitable for agricultural planting.

Description

technical field [0001] The invention belongs to the field of soil remediation, and in particular relates to a conditioner for remediation of heavy metal polluted soil and a preparation method thereof. Background technique [0002] With the rapid development of industrial production, the massive mining of mineral resources and the massive use of various pesticides and chemicals have caused various heavy metal pollutants to enter the soil through various channels, causing the heavy metal content in the soil to exceed the standard, especially in the soil of paddy fields for farming. Most heavily polluted by heavy metals. [0003] In response to the above problems, people will take chemical, physical or biological methods to remove heavy metals in the soil through passivation, solidification, or bioabsorption transformation or degradation, so as to reduce the transfer of heavy metals to the human body or other places through the food chain, which is harmful to human health. and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00C09K17/40
CPCB09C1/00C09K17/40
Inventor 程功弼仲英豪
Owner JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD
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