Chromium-contaminated soil repair agent and preparation method thereof

A technology of chromium-contaminated soil and repair agent, which is applied in the field of soil restoration, and achieves the effect of broad market prospect, low production cost and simple production method

Inactive Publication Date: 2018-03-20
GUILIN CHUNXIAO ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the existing chromium-contaminated soil remediation or disposal methods, the main goal that people pay attention to at present is to reduce the leaching of chromium in the chromium-contaminated soil after disposal to the index required by people, that is, it is harmless to the environment, and has no effect on the chromium-contaminated soil. There is still little research on the realization of resource utilization

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  • Chromium-contaminated soil repair agent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] The chromium-contaminated soil remediation agent of the present embodiment is made of the following raw materials: 10 kg of calcium hydroxyphosphate with 400 meshes, 15 kg of sodium carbonate, 6 kg of palmitic acid, 15 kg of zeolite, 10 kg of calcium chloride, 15 kg of ground steel slag, 6kg of fine slag, 16kg of ferrous sulfate, 10kg of epoxy resin and 16kg of calcium lignosulfonate.

[0022] The preparation method of the above-mentioned chromium-contaminated soil remediation agent comprises the steps of: getting raw materials of the following weight: 400 mesh calcium hydroxyphosphate 10kg, sodium carbonate 15kg, palmitic acid 6kg, zeolite 15kg, calcium chloride 10kg, ground steel slag 15kg , 6kg of finely ground slag, 16kg of ferrous sulfate, 10kg of epoxy resin and 16kg of calcium lignosulfonate, after mixing evenly, grind until the Blaine specific surface area is 360m 2 / Kg to obtain the chromium-contaminated soil remediation agent.

Embodiment 2

[0024] The chromium-contaminated soil remediation agent of the present embodiment is made of the following raw materials: 20 kg of calcium hydroxyphosphate, 10 kg of sodium carbonate, 10 kg of palmitic acid, 10 kg of zeolite, 15 kg of calcium chloride, 10 kg of ground steel slag, 10 kg of milled steel slag, Fine slag 11kg, ferrous sulfate 10kg, epoxy resin 15kg and calcium lignosulfonate 11kg.

[0025] The preparation method of the above-mentioned chromium-contaminated soil remediation agent comprises the steps of: taking raw materials of the following weight: calcium hydroxyphosphate 20kg, sodium carbonate 10kg, palmitic acid 10kg, zeolite 10kg, calcium chloride 15kg, ground steel slag 10kg, ground slag 11kg , 10kg of ferrous sulfate, 15kg of epoxy resin and 11kg of calcium lignosulfonate, after mixing evenly, grind until Blaine's specific surface area is 380m 2 / Kg to obtain the chromium-contaminated soil remediation agent.

Embodiment 3

[0027] The chromium-contaminated soil remediation agent of the present embodiment is made of the following raw materials: 30 kg of 400 mesh calcium hydroxyphosphate, 5 kg of sodium carbonate, 15 kg of palmitic acid, 5 kg of zeolite, 20 kg of calcium chloride, 5 kg of finely ground steel slag, 16kg of fine slag, 4kg of ferrous sulfate, 20kg of epoxy resin and 6kg of calcium lignosulfonate.

[0028] The preparation method of the above-mentioned chromium-contaminated soil remediation agent comprises the steps of: taking raw materials of the following weight: calcium hydroxyphosphate 30kg, sodium carbonate 5kg, palmitic acid 15kg, zeolite 5kg, calcium chloride 20kg, ground steel slag 5kg, ground slag 16kg , 4kg of ferrous sulfate, 20kg of epoxy resin and 6kg of calcium lignosulfonate, after mixing evenly, grind until Blaine specific surface area is 400m 2 / Kg to obtain the chromium-contaminated soil remediation agent.

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Abstract

The invention discloses a chromium-contaminated soil repair agent and a preparation method thereof and belongs to the technical field of soil repair. The chromium-contaminated soil repair agent is prepared from the following components in parts by weight: 10-30 parts of hydroxy calcium phosphate, 5-15 parts of sodium carbonate, 6-15 parts of palmitic acid, 5-15 parts of zeolite, 10-20 parts of calcium chloride, 5-15 parts of ground steel slag, 6-16 parts of ground mineral slag, 4-16 parts of ferrous sulfate, 10-20 parts of epoxy resin and 6-16 parts of calcium lignosulfonate. The invention also discloses a preparation method of the chromium-contaminated soil repair agent. A curing agent disclosed by the invention not only has good gelling property, but also has reductibility, the cured soil has certain strength, dissolution of hexavalent chromium and total chromium in contaminated soil can be effectively reduced, without rebounding along with time, and the curing agent can be used forroadbed bricks and the like and has the characteristic of being economical and environmentally friendly.

Description

technical field [0001] The invention relates to a chromium-contaminated soil remediation agent and a preparation method thereof, belonging to the technical field of soil remediation. Background technique [0002] Soil heavy metal pollution refers to human activities, the content of trace metal elements in the soil exceeds the background value, and the excessive content caused by excessive deposition is collectively referred to as soil heavy metal pollution. Heavy metal pollution in farmland soil is extremely harmful. Heavy metal pollution in soil will not only reduce crop yield and quality, but also enter the human body through the soil-plant system and the food chain, endangering human health and life safety. Soil heavy metal pollution has the characteristics of concealment, hazard lag, long-term nature, and bioaccumulation of heavy metals in the biological chain. These determine that if the understanding and treatment of soil heavy metal pollution are delayed, it will brin...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 黄云鸿李力
Owner GUILIN CHUNXIAO ENVIRONMENTAL PROTECTION TECH CO LTD
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