Organic bacterial manure for lead zinc ore contaminated soil remediation and preparation method of organic bacterial manure

A technology of polluting soil and organic bacteria, applied in the direction of organic fertilizers, inorganic fertilizers, fertilizers made of biological waste, etc., to achieve good lead and zinc resistance, improve biodiversity and microbial numbers, and alleviate the effects of stress.

Inactive Publication Date: 2015-04-08
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But at present there is no organic bacterial fertilizer specially applied to contaminated soil in lead-zinc mining areas, so it is necessary to invent a special organic bacterial fertilizer specially used in contaminated soil in lead-zin

Method used

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  • Organic bacterial manure for lead zinc ore contaminated soil remediation and preparation method of organic bacterial manure
  • Organic bacterial manure for lead zinc ore contaminated soil remediation and preparation method of organic bacterial manure
  • Organic bacterial manure for lead zinc ore contaminated soil remediation and preparation method of organic bacterial manure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of organic bacterial fertilizer of the present invention is used for the remediation of lead-zinc ore polluted soil, after measuring the degree of soil pollution in the embodiment, the determined organic bacterial fertilizer composition is to comprise 1 mass part of basic nutrient solution, 25 mass parts of mitigation The water-retaining medium of 74 mass parts (the water-retaining medium adopted in this embodiment is peat soil) and the anti-lead-zinc composite microbial bacterial agent of 5 mass parts.

[0030] The preparation method of the organic bacterial manure that is used for the remediation of lead-zinc mine polluted soil in aforementioned embodiment 1 specifically comprises the following steps:

[0031] (1) Prepare basic nutrient solution: mix calcium superphosphate, potassium sulfate, sodium hydroxide, disodium hydrogen phosphate and sodium dihydrogen phosphate to obtain basic nutrient solution; in basic nutrient solution, calcium superphosphate, potassi...

Embodiment 2

[0045] An application of the organic bacterial fertilizer used for the remediation of lead-zinc mine contaminated soil in Example 1 in the remediation of lead-zinc mine contaminated soil, using slag collected from a lead-zinc tailings pond in Hunan as a substrate to carry out a pot test.

[0046] Experimental group: the organic bacterial fertilizer of Example 1 and the slag from the lead-zinc tailings pond were uniformly mixed according to the mass ratio of 1:4 and filled into pots. A total of 8 pots of parallel samples were set up.

[0047] Control group: Add N, P, and K chemical fertilizers in the same amount as the organic bacterial fertilizer in Example 1 to the slag of lead-zinc tailings, and put them in pots. A total of 8 pots of parallel samples were set up.

[0048] Three selected plant seedlings were transplanted into each pot. After one year of planting, the changes in the increase in plant height and biomass of the test plants were investigated, and the results of...

Embodiment 3

[0052] Example 3: The organic bacterial fertilizer used in Example 1 for remediation of lead-zinc ore contaminated soil was used in the ecological restoration project of the lead-zinc tailings polluted area.

[0053] In the lead-zinc tailings reservoir area in Zixing, Hunan Province, plant communities I, II, III, IV, and V have been configured, and a 1hm2 ecological restoration demonstration project has been established for each plant community.

[0054] In the early stage of restoration, the slag samples in the project area were measured and analyzed, the nutrient level of the slag land, the types of polluted elements and their pollution degree, and the contents of Pb and Zn elements in the soil in the 0-50cm section were 2684.2mg / Kg and 3433.8mg / Kg respectively, far Higher than the background value of Hunan Province and China.

[0055] Experimental area: the afforestation method is to dig a hole 0.5m * 0.5m * 0.5m, and then add the organic bacterial fertilizer for repairing ...

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Abstract

The invention discloses an organic bacterial manure for lead zinc ore contaminated soil remediation and a preparation method of the organic bacterial manure. The organic bacterial manure for lead zinc ore contaminated soil remediation is prepared from 1-5 parts by weight of basic nutrient solution, 20-25 parts by weight of remitting composite organic raw materials, 70-75 parts by weight of water-retaining medium and 3-5 parts by weight of lead/zinc-resisting composite microbial agent; the preparation method of the organic bacterial manure comprises the steps of mixing and fermenting. The organic bacterial manure for lead zinc ore contaminated soil remediation has the effects of retaining water, improving soil and raising the soil fertility; in addition, the toxicity of the lead and zinc elements in the plant rhizosphere soil can be effectively remitted, the efficacy of the organic fertilizer is improved and the restoration capacity of the plants is enhanced.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to an organic bacterial fertilizer used for remediation of lead-zinc ore polluted soil, and to a preparation method of the organic bacterial fertilizer. Background technique [0002] The area of ​​heavy metal polluted soil caused by nonferrous metal mines in Hunan Province accounts for 13% of the province's land area. The main polluting elements in the soil in mining areas are Pb, Zn, As, Cr, Cu, and Cd, and the pollution levels are far higher than the national soil environmental quality level two. standards, among which Pb, Zn, and Cd are the most polluted. [0003] The soil surface of lead-zinc mine abandoned land is severely damaged, water and nutrients are insufficient, and the content of toxic substances such as lead and zinc is too high, making it difficult for most microorganisms and plants to survive in this environment, which has become the main limitation in the proces...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/06C05G3/70C05G3/80
CPCC05B1/02C05G3/70C05B7/00C05B11/16C05D1/02C05F5/002C05G3/80
Inventor 冯冲凌吴晓芙蒋丽娟李科林陈永华陈明利
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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