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Heavy metal deactivator for chicken manure compost

A heavy metal passivator and composting technology, which is applied in application, fertilization equipment, fertilizer mixture, etc., can solve the problems of low removal efficiency, residue, and secondary pollution of waste liquid, etc., and achieve improved fertilizer preservation effect and good passivation Effect, raw material natural effect

Active Publication Date: 2016-08-31
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Comparing the operability, high efficiency, low cost and environmental safety of several heavy metal removal methods, it is found that the removal efficiency of physical methods is lower than that of chemical and microbial methods in removing heavy metals in sludge, but the cost is low and the operation is simple; while using When chemical methods and microbial leaching methods reduce heavy metal content, although the removal rate of heavy metals is high, due to high cost, troublesome operation, and the waste liquid after treatment is likely to cause secondary pollution to the environment, it has not yet reached the practical stage.
[0006] Using physical methods to adsorb heavy metals in the composting process, the source of adsorbents is wide, the principle of the method is relatively simple, and the operation is easy, but the removal efficiency of heavy metals is not high, and the adsorbents are difficult to separate from the compost, and they still remain in the compost products.

Method used

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  • Heavy metal deactivator for chicken manure compost
  • Heavy metal deactivator for chicken manure compost
  • Heavy metal deactivator for chicken manure compost

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A heavy metal passivator for chicken manure composting is prepared by mixing the following components in weight percentage: 30% of brown algae biochar, 60% of attapulgite and 10% of sepiolite.

[0027] The brown algae biochar is prepared by carbonizing the following raw material components according to mass percentage: 40% of hijiki, 50% of copper algae, and 10% of sargassum. The specific method of carbonization is as follows: after mixing the raw material components, cracking at 600°C for 5 hours in an oxygen-free environment, and cooling naturally.

Embodiment 2

[0029] A heavy metal passivator for chicken manure composting is prepared by mixing the following components in weight percentage: 50% of brown algae biochar, 40% of attapulgite and 10% of sepiolite.

[0030] The brown algae biochar is prepared by carbonizing the following raw material components according to mass percentage: 60% of hijiki, 30% of copper algae and 10% of sargassum. The specific method of carbonization is as follows: after mixing the raw material components, cracking at 650° C. for 3 hours in an oxygen-free environment, and cooling naturally.

Embodiment 3

[0032] A heavy metal passivator for chicken manure composting is prepared by mixing the following components in weight percentage: 40% of brown algae biochar, 50% of attapulgite and 10% of sepiolite.

[0033] The brown algae biochar is prepared by carbonizing the following raw material components according to mass percentage: 50% of hijiki, 40% of copper algae and 10% of sargassum. The specific method of carbonization is as follows: after mixing the raw material components, cracking at 650° C. for 4 hours in an oxygen-free environment, and cooling naturally.

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Abstract

The invention discloses a heavy metal deactivator for chicken manure compost. The heavy metal deactivator is prepared from 30-50wt% of brown seaweed biochar, 40-60wt% of attapulgite and the balance meerschaum. The heavy metal deactivator utilizes natural raw materials which are environmentally friendly and widely exist in the natural environment and has good passivation effects on heavy metals such as Cu, Zn, Pb and As in chicken manure.

Description

technical field [0001] The invention relates to a heavy metal passivator, in particular to a heavy metal passivator for chicken manure composting. Background technique [0002] The large-scale use of feed additives in the development of modern large-scale breeding industry has greatly changed the composition and properties of livestock and poultry excrement and traditional scattered breeding livestock and poultry manure. Due to high sodium and Residues of heavy metal harmful substances may cause pollution to farmland. In view of the changes in the composition of organic fertilizers, the current resource utilization of livestock and poultry manure in my country lacks scientific and reasonable technical specifications, and the safety of organic fertilizer application in farmland needs to be further improved. [0003] In organic fertilizers from livestock and poultry breeding, the problem of heavy metal pollution has attracted great attention. According to statistics, about 1...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/80
CPCC05G3/00C05G3/80
Inventor 孙万春马军伟林辉俞巧钢邹平王强叶静姜丽娜符建荣
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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