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Underground water heavy metal pollution remediation device

A pollution remediation and heavy metal technology, which is applied in water pollutants, contaminated groundwater/leachate treatment, biological water/sewage treatment, etc., can solve problems such as increased operating costs, high repair costs, and long processing time, and achieve operational Low cost, good removal effect and easy construction

Active Publication Date: 2015-06-10
北京德瑞科森环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the permeable reaction wall is used to deal with heavy metal pollution, when the adsorption capacity of the reaction medium reaches saturation, the frequent replacement of the medium material in the wall will lead to the continuous increase of the operating cost of the technology; the electrodynamic repair technology needs to be carried out in an acidic environment, and the repair cost is high. long time
To sum up, it can be seen that the remediation technology applied to heavy metal pollution in groundwater has limitations to varying degrees in actual engineering, and it is difficult to realize. Based on this, how to remediate heavy metal pollution in groundwater in an economical, efficient and reasonable way is currently facing both at home and abroad. problem

Method used

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Effect test

Embodiment 1

[0057] The groundwater of a tailings reservoir area is seriously polluted by heavy metals. The heavy metal content in the groundwater is: Zn19.15mg / L; Cu17.64mg / L; Mn5.73mg / L; Pb66.73mg / L. The design and construction of the device provided by the invention is completed through the investigation of the scope and degree of groundwater pollution on site. Among them, the adsorption reaction area is filled with three media materials: biological manganese oxide, zeolite, and ceramsite, which are evenly mixed. The average particle size is 5-10mm, and the mass ratio is 6:3:1; Tianhe pokeweed, the planting ratio is 1:1; the rapid seepage area is filled with zeolite and quartz sand with an average particle size of 2-4mm, and the mass ratio is 4.5:1. The concentration of heavy metals in groundwater is detected by regularly sampling samples from target aquifers and fast-seepage areas through the monitoring system. The results show that the device can treat 15m of water 3 / d, Zn concentr...

Embodiment 2

[0059] In a solid waste storage area, the As content in the groundwater is 2.04mg / L; the Cd content is 3.84mg / L; the Pb content is 7.53mg / L. According to the device provided by the invention, its design and construction are completed. Among them, the adsorption reaction area is filled with three media materials: biological manganese oxide, zeolite, and ceramsite, which are evenly mixed. The average particle size is 5-10mm, and the mass ratio is 7:3:1; For Tianhe centipede grass, the ratio of the number of plants planted is 1:1; the rapid seepage area is filled with zeolite and quartz sand with an average particle size of 2-4mm, and the mass ratio is 6:1. The concentration of heavy metals in groundwater is detected by regularly sampling samples from target aquifers and fast-seepage areas through the monitoring system. The results show that the device can achieve a treatment capacity of 10m 3 / d, As concentration dropped to 0.28mg / L, removal rate was 93.3%; Cd concentration dr...

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Abstract

An underground water heavy metal pollution remediation device mainly includes a pumping system, a water distribution system, an adsorption reaction zone, a phytoremediation zone, a rapid seepage zone and a monitoring system. The adsorption reaction zone is filled with a medium for the adsorption of heavy metals in order to remove the heavy metals in the underground water. The phytoremediation zone is planted with hyperaccumulator with absorption and enrichment effects on heavy metals, so as to enhance the removal effect of heavy metals. The technique organically combines physical adsorption, chemical adsorption and phytoremediation, and can remediate heavy metals pollution of As, Zn, Cd, Mn, Cu, Cr and Pb and reach good removal effect; replacement of the adsorption reaction medium filler is simple; and the device has low operation cost, and is applicable to groundwater pollution sites in different water depths.

Description

technical field [0001] The invention belongs to the category of groundwater pollution restoration in the field of environmental protection, and in particular relates to a device for repairing heavy metal pollution in groundwater. [0002] The invention also relates to a method for repairing groundwater heavy metal pollution by using the repair device. Background technique [0003] Heavy metals are important pollutants that affect groundwater quality. In recent years, due to the rapid development of industry, the discharge of a large amount of industrial wastewater such as electroplating, mining, printing and dyeing, and electronics has led to a sharp increase in the content of heavy metals in groundwater, seriously affecting human health and ecological environment safety. Therefore, it is urgent to adopt effective remediation technology to treat heavy metal-contaminated groundwater. [0004] At present, the treatment of heavy metal pollution in groundwater mainly includes ...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F1/28C02F101/20
CPCC02F1/28C02F3/32C02F2103/06Y02W10/10
Inventor 马志飞袁志业
Owner 北京德瑞科森环保科技有限公司
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