Photocatalysis soil heavy metal restoration agent

A technology of heavy metals and remediation agents, applied in the field of soil remediation, can solve the problems of anti-oxidation system damage, soil re-pollution, failure, etc., and achieve good application prospects and the effect of thorough removal

Inactive Publication Date: 2016-09-28
凤阳徽亨商贸有限公司
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  • Claims
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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 a...

Method used

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  • Photocatalysis soil heavy metal restoration agent
  • Photocatalysis soil heavy metal restoration agent

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Embodiment Construction

[0022] A photocatalytic soil heavy metal remediation agent, made of the following raw materials in parts by weight (kg): titanium dioxide 4, egg shell 12, calcium ammonium nitrate 5, fly ash 6, water hyacinth powder 10, potassium pyrophosphate 2, deseed Sunflower plate 85, pig manure 40, kaolin 23, calcium carbonate 12, slash pine needles 32, appropriate amount of water.

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

[0024] (1) Dry the sunflower pan and pig manure in the sun, pulverize them, put them in an oven and dry them at 50°C for 8 hours, put the resulting slag in a closed furnace, and dry them at a speed of 20°C / min. Raise the temperature to 500°C and keep it warm for 90 minutes, then take it out when the temperature drops to 58°C to obtain biochar;

[0025] (2) Put kaolin and calcium carbonate in a calciner after being mixed, calcined at 600° C. for 40 minutes, take it out after cooling to room temperat...

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Abstract

The invention discloses a photocatalysis soil heavy metal restoration agent, which is prepared from the following raw materials (by weight): 4-5 parts of titanium dioxide, 12-13 parts of egg shell, 5-6 parts of calcium ammonium nitrate, 6-8 parts of flyash, 10-14 parts of water hyacinth powder, 2-4 parts of potassium pyrophosphate, 85-95 parts of seeded sunflower disc, 40-45 parts of pig dung, 23-26 parts of kaolin, 12-14 parts of calcium carbonate, 32-35 parts of slash pine needle and a proper amount of water. By using organic biomass charcoal and organic fermented materials as adsorption carriers, lots of organic pollutants such as heavy metal ions and pesticide residue, etc. can be adsorbed on particle surface. After transmission light in soil catalyzes and restores titanium dioxide on particle surface, organic matter can be subjected to oxidative degradation, thus achieving the effect of thoroughly removing noxious substances in soil. The product has a good application prospect in the field of soil restoration.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a photocatalytic 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 long-ter...

Claims

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Application Information

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IPC IPC(8): C09K17/40B01J21/06B09C1/08
CPCB01J21/063B01J35/004B09C1/08C09K17/40
Inventor 张波
Owner 凤阳徽亨商贸有限公司
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