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Soil remediation method for treating heavy metal pollutants

A soil remediation and polluted soil technology, applied in the field of soil remediation, can solve the problems of reducing the total amount of heavy metals in the soil, unable to separate and collect, etc., and achieve the effects of large accumulation of heavy metals, obvious effects, and simple extraction.

Active Publication Date: 2012-02-22
浙江博世华环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since microorganisms have been living in the soil, they cannot be separated and collected, so they have no direct effect on reducing the total amount of heavy metals in the soil.

Method used

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  • Soil remediation method for treating heavy metal pollutants
  • Soil remediation method for treating heavy metal pollutants
  • Soil remediation method for treating heavy metal pollutants

Examples

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Effect test

Embodiment 1

[0064] A soil remediation method for dealing with heavy metal pollutants. According to the level of heavy metal content in the soil, the soil is divided into three categories, namely heavily polluted soil, moderately polluted soil and slightly polluted soil (as shown in Table 1). technical processing.

[0065] Sampling method

[0066] According to the principle of uniformity and operability, the plot is divided into unit plots of 10m×10m, and points are collected for each unit plot to meet the universality of the detection data.

[0067] Take 10m×10m as the unit sample plot, select 5 points for each sample plot, adopt quincunx-shaped distribution points, and take four more points around the selected center point. Use a soil sampler to collect 0.5kg of the surface layer (0-20cm) at each point, then mix the soil at 5 points evenly, and finally take about 1.0kg of soil sample into a brown sample container and bring it back. Then put the collected soil samples on the plastic fil...

Embodiment 2

[0088] A soil remediation method for dealing with heavy metal pollutants. According to the heavy metal content in the soil, the soil is divided into three categories, namely heavily polluted soil, moderately polluted soil and slightly polluted soil. The soil remediation method for heavily polluted soil Including chemical leaching first, and then carrying out earthworm enrichment restoration and phytoremediation; the soil restoration method for moderately polluted soil includes earthworm enrichment restoration and phytoremediation; the described soil restoration method for slightly polluted soil is plant repair;

[0089] The described earthworm enrichment restoration process:

[0090] 1) Loosen the soil and apply straw and dry cow dung organic fertilizer;

[0091] 2) Putting in earthworm culture, put in earthworm culture, earthworms will ingest food through continuous peristalsis, together with soil intake into the body, so that heavy metals stay and enrich in the body, during...

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Abstract

The invention relates to a soil remediation method for treating heavy metal pollutants. The soil is divided into three classes according to the heavy metal content in the soil, namely, heavily contaminated soil, moderately contaminated soil and lightly contaminated soil. The soil remediation method for the heavily contaminated soil comprises the steps of chemical leaching, earthworm enrichment remediation and phytoremediation; the soil remediation method for the moderately contaminated soil comprises the steps of earthworm enrichment remediation and phytoremediation; and the soil remediation method for the lightly contaminated soil is phytoremediation. The invention combines the animal / plant enhanced composite remediation, realizes in-situ bioremediation of the soil successfully and has obvious effect without causing secondary pollution to the soil.

Description

technical field [0001] The invention relates to a soil remediation method, in particular to a soil remediation method for treating metal pollutants, and belongs to the field of soil remediation methods. Background technique [0002] Characteristics of several heavy metal pollution: [0003] 1. Cadmium (Cd) [0004] Cadmium (Cd) is a silver-white rare metal, soft, malleable, corrosion-resistant, wear-resistant, and volatile when slightly heated. No single cadmium ore has been found, and it is often found in lead-zinc and lead-copper-zinc ores. Cadmium is widely used in electroplating, automobile and aviation, pigment, paint, printing and other industries. Studies in recent years have proved that cadmium will be the third metal element that pollutes the human environment and threatens human health after mercury and lead, both in terms of toxicity and accumulation. Due to the wide application range of cadmium and the diversification of consumption patterns, the chance of en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00B09C1/10B09C1/08
Inventor 陈昆柏况武王中伟邵晓周
Owner 浙江博世华环保科技有限公司
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