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Restoration drug of high concentration lead-polluted soil and use method thereof

A lead-contaminated soil and remediation agent technology is applied in the field of remediation agents for high-concentration lead-contaminated soil, which can solve the problems of plant collection, complex treatment process, high addition amount and price, and long maintenance and management cycle, achieving good treatment effect, The effect of low cost and fast construction speed

Inactive Publication Date: 2016-04-13
HANGZHOU XIAOHONG ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings: large amount of engineering, high investment costs, damage to soil structure, and cause soil fertility to decline
However, there are disadvantages in this method: high repair costs, high energy consumption, and even secondary pollution
The disadvantages of this method: the treatment period is long, the later plant collection and treatment process is relatively complicated, and the maintenance management period is long
At present, there are many remediation agents for medium and low-concentration lead-contaminated soil in China, but there are few remediation agents for high-concentration lead-contaminated soil, and the addition amount and price are relatively high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Grind the raw materials sodium sulfide, sodium phosphate and bentonite into a material with a particle size of less than 200 meshes, weigh according to the mass ratio: 20% sodium sulfide, 30% sodium phosphate, and 50% bentonite, and then mix evenly to obtain the Restoration Potion.

Embodiment 2

[0037] Grinding the raw materials sodium polysulfide, disodium hydrogen phosphate and diatomite into a material with a particle size of less than 200 meshes, weighing according to the mass percentage: 30% sodium polysulfide, 20% disodium hydrogen phosphate, 50% diatomite, Then mix evenly to obtain the repairing agent.

Embodiment 3

[0039] Grind the raw materials sodium sulfide, sodium polysulfide, sodium polyphosphate, disodium hydrogen phosphate, sepiolite and kaolin into materials with a particle size of less than 200 mesh, and weigh according to the mass ratio: sodium sulfide is 25%, sodium polysulfide is 10%, 10% of sodium polyphosphate, 5% of disodium hydrogen phosphate, 40% of kaolin and 20% of sepiolite are mixed evenly to obtain the restoration agent.

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PUM

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Abstract

The invention relates to the technical field of environmental protection and especially relates to a restoration drug of high concentration lead-polluted soil and a use method thereof. The restoration drug is prepared from 5-35% by mass of a sulfur-based compound, 15-45% by mass of a phosphor-based compound and 35-75% by mass of a mineral material. The sulfur-based compound, the phosphor-based compound and the mineral material have granularity less than 200 meshes. The restoration drug has the advantages of wide raw material sources, simple preparation processes, operation and use convenience, high efficiency and good treatment effects.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a remediation agent for high-concentration lead-contaminated soil and a use method thereof. Background technique [0002] With the development of industry and agriculture and the wide application of lead-containing chemicals, a large amount of lead-containing pollutants enter the soil environment in the process of lead mining, electroplating metallurgy, waste treatment and disposal, etc., resulting in widespread lead pollution in soil worldwide. . Lead is very harmful to human health, and can cause harm to the nervous system, cardiovascular system and endocrine system, even life-threatening. Therefore, the control and remediation of lead-contaminated soil has received more and more attention. Currently, lead-contaminated soil remediation technologies mainly include the following: [0003] 1. Engineering restoration method: Engineering restoration methods mainl...

Claims

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Application Information

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IPC IPC(8): C09K17/02B09C1/08
CPCC09K17/02B09C1/08
Inventor 曾伟刚宋波张耀武项金良
Owner HANGZHOU XIAOHONG ENVIRONMENTAL PROTECTION TECH CO LTD