Secondary salinity soil heavy metal restoration agent

A secondary salinization and heavy metal technology, applied in the field of soil remediation, can solve the problems of reduced antioxidant enzyme activity, antioxidant system damage, soil re-pollution, etc., to reduce pH value, reduce evaporation, increase organic matter and soil microorganisms Effect

Inactive Publication Date: 2016-09-28
凤阳徽亨商贸有限公司
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Problems solved by technology

Heavy metal elements are easy to combine with the sulfhydryl group in the active part of the enzyme, and the metal element will replace the essential elements in the sulfur protein, such as Mg2+, Ca2+ and other biologically necessary elements. The anti

Method used

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  • Secondary salinity soil heavy metal restoration agent
  • Secondary salinity soil heavy metal restoration agent

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Embodiment Construction

[0022] A secondary salinized soil heavy metal remediation agent, made of the following raw materials in parts by weight (kg): lignite 8, weathered coal 5, potassium carbonate 2, cassava dregs 32, malt root 13, manganese sulfate 1, seedless sunflower Pan 77, silkworm excrement 35, kaolin 24, calcium carbonate 9, slash pine needles 29, water as appropriate.

[0023] The concrete steps of the preparation of described soil heavy metal restoration agent are as follows:

[0024] (1) Dry the seedless sunflower dish and silkworm excrement in the sun, crush them, put them in an oven and dry them at 55°C for 10 hours. Raise the temperature to 550°C and keep it warm for 100 minutes, then take it out when the temperature drops to 60°C to obtain biochar;

[0025] (2) Put kaolin and calcium carbonate in a calciner after being mixed, calcined at 600° C. for 50 minutes, take it out after cooling to room temperature, and obtain a calcined powder for later use;

[0026] (3) Mix the biochar ob...

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Abstract

The invention discloses a secondary salinity soil heavy metal restoration agent, which is prepared from the following raw materials (by weight): 8-9 parts of lignite, 5-6 parts of weathered coal, 2-3 parts of potassium carbonate, 32-35 parts of cassava residue, 13-15 parts of malt sprout, 1-3 parts of manganese sulfate, 77-83 parts of seeded sunflower disc, 35-38 parts of silkworm excrement, 24-26 parts of kaolin, 9-10 parts of calcium carbonate, 29-31 parts of slash pine needle and a proper amount of water. In allusion to physicochemical properties of secondary salinity soil, lots of organic humus including lignite, weathered coal and the like are added to dilute soil salt and alkali content and enhance granular structure of soil. Meanwhile, by strong water absorption of biochar, water evaporation of soil can be reduced, accumulation of saline matter evaporated with capillary water towards surface soil is decreased, organic matter and soil microorganisms are increased, pH value of soil is reduced, and the ecological environment around soil is fundamentally improved.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a secondary salinized soil heavy metal remediation agent. Background technique [0002] The sources of heavy metal pollution in my country mainly include industrial "three wastes" discharge, seepage of household garbage, household coal burning, and vehicle exhaust emissions. Industries such as electroplating, plastics, chemicals, and mineral smelting and processing are the main industrial sources of heavy metals. The release of coal combustion is also one of the important causes of soil heavy metal pollution. Motor vehicle exhaust can also significantly cause heavy metal pollution in the soil on both sides of the road. The content of some heavy metal elements in municipal solid waste exceeds the standard, and long-term stacking will also cause heavy metals to leak into the soil, resulting in an increase in local heavy metal content in regional soil. In addition, the lon...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08C09K109/00
CPCB09C1/08B09C2101/00C09K17/40C09K2109/00
Inventor 张波
Owner 凤阳徽亨商贸有限公司
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