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Sludge or soil treatment method and heavy metal component stabilizing agent

A soil treatment and heavy metal technology, applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problem of increased treatment costs

Inactive Publication Date: 2014-10-15
AKUER TRADING SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the addition amount of chelate compound is increased, there will be a problem of increased processing cost

Method used

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  • Sludge or soil treatment method and heavy metal component stabilizing agent
  • Sludge or soil treatment method and heavy metal component stabilizing agent
  • Sludge or soil treatment method and heavy metal component stabilizing agent

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Embodiment Construction

[0010] The sludge or soil treated by the present invention is mainly inorganic sludge discharged from chemical factories, mines, smelters, ironworks, gold-plating factories, etc. Sludge soil produced in the process. The heavy metal components contained in these sludges or soils are ions containing at least one of arsenic, lead, cadmium, nickel, chromium (hexavalent), mercury, antimony, selenium, barium, and the like.

[0011] Ferric chloride, ferric nitrate, ferric sulfate, zinc chloride, zinc sulfate, copper chloride, copper nitrate, copper sulfate, zinc chloride, and manganese sulfate can be used as the acidic metal salt used in the heavy metal component stabilizing agent of the present invention. , aluminum chloride, aluminum sulfate, etc. In addition, it is more suitable to use environmentally friendly and low-cost ferric chloride, ferric sulfate, aluminum chloride, and aluminum sulfate. The iron salt at this time is preferably divalent or trivalent salt. Iron salt and a...

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Abstract

The invention provides a stabilizing treatment method for heavy metal components in sludge; according to the method, a heavy metal component stabilizing agent is selected for stabilizing treatment of the heavy metal components in the sludge, wherein the heavy metal component stabilizing agent comprises at least 1 acidic metal salts of iron, zinc, copper, manganese and aluminum and at least 1 alkali metal or alkaline earth metal alkali compound of calcium, magnesium, sodium and potassium, the mixing ratio of heavy metal component stabilizing agent and sludge is: 100 parts by weight of sludge corresponding to 0.5 ~ 30 parts by weight of the acidic metal salt and 0.5-60 parts by weight of the alkali metal or alkaline earth metal alkali compound. By use of the method, stabilizing treatment of trace heavy metal lead and other harmful ingredients contained in the sludge produced from a factory and the like can be easily performed, the processed sludge can be used for purposes such as landfill and the like, the heavy metal harmful ingredients contained in the stabilizing treated may not dissolved from the sludge, so that the environment can be protected.

Description

technical field [0001] The present invention relates to a sludge or soil treatment method and a heavy metal component stabilizing agent, in particular to a method for safely using heavy metal component-containing sludge or sludge soil generated in factories and the like for use in landfills, etc. , and the method of stabilizing harmful substances such as arsenic, lead, cadmium, nickel, chromium (hexavalent) contained in sludge or sludge soil, so that they cannot be dissolved, and the heavy metal components used for this treatment are stabilized chemicals. Background technique [0002] Waste liquids containing heavy metals are produced in the processes of product manufacturing, refining, surface treatment, and gold plating in factories, mines, and ironworks. Among them, waste liquid with high concentration will be recycled through the recycling process and become raw materials again, while waste liquid with low concentration and itself is an impure substance will be discharg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C09K17/08C09K17/02C09K17/06C02F11/143C02F11/145
CPCB09C1/08C02F2101/20C02F11/14B09B1/00C09K17/02C02F1/66B09C1/00C02F11/00C02F1/62C02F11/143C02F11/145
Inventor 大石徹
Owner AKUER TRADING SHANGHAI
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