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Method for repairing explosive polluting soil and underground water

A technology of polluted soil and remediation method, which is applied in the field of environmental pollution control and remediation, can solve the problems of reducing bioavailability and biodegradation efficiency, and achieve the effect of low operating cost, thorough remediation, and no secondary pollution

Inactive Publication Date: 2007-11-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since pollutants are often strongly adsorbed by the soil, their bioavailability / biodegradation efficiency is often reduced

Method used

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  • Method for repairing explosive polluting soil and underground water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) The pollution plume of TNT polluted groundwater is 1m 3 Inject 0.5mol / L potassium chloride solution at a speed of / h to make K + Clay minerals in ionic groundwater undergo ion exchange to form an adsorption zone to trap TNT explosion pollutants.

[0015] 2) In the adsorption interception zone and the groundwater pollution area, the distance is 1m 3 Inject 50000mg / L potassium permanganate solution at a speed of / h to chemically oxidize and degrade the TNT explosive pollutants in the trapped zone and the polluted area.

Embodiment 2

[0017] 1) The pollution plume of TNT polluted groundwater is 10m 3 Inject 0.05mol / L potassium chloride solution at a speed of / h to make K + Clay minerals in ionic groundwater undergo ion exchange to form an adsorption zone to trap TNT explosion pollutants.

[0018] 2) In the adsorption interception zone and the groundwater pollution area, at a distance of 10m 3 Inject 1000mg / L potassium permanganate solution at a speed of / h to chemically oxidize and degrade the TNT explosion pollutants in the trapped zone and the polluted area.

Embodiment 3

[0020] 1) The pollution plume of TNT polluted groundwater is 2m 3 Inject 0.25mol / L potassium chloride solution at a speed of / h to make K + Clay minerals in ionic groundwater undergo ion exchange to form an adsorption zone to trap TNT explosion pollutants.

[0021] 2) In the adsorption interception zone and the groundwater pollution area, within 2m 3 Inject 25000mg / L potassium permanganate solution at a speed of / h to chemically oxidize and degrade the TNT explosive pollutants in the trapped zone and the polluted area.

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Abstract

The invention is concerned with a repair method to the soil and ground water polluted by exploder. Pour potassium chloride liquid or potassium permanganate liquid in the soil and the polluted plume of ground water polluted by exploder and take ion exchange between the K+ ion and the clay minerals of soil and ground water to entrap contamination with MnO4- ion. Pour potassium permanganate liquid into adsorption entrapment and pollution area to oxidate the contamination. This method has easy process, low demand of technology, low moving cost and engrained repair without pollution, especially to repair the soil and ground water pollution process caused by the exploder, such as aromatic nitro-compound, during the produce, using and disassembly.

Description

technical field [0001] The invention relates to environmental pollution control and repair, in particular to a method for repairing soil and groundwater contaminated by explosives. Background technique [0002] The explosives industry has the characteristics of high energy density and high instantaneous power, and has a wide range of uses in military, industrial and agricultural construction and production. The explosives industry is one of the important sources of pollution. Various pollutants are produced during the production process, which are discharged into the environment in the form of gas, liquid and solid. The explosives wastewater contains TNT, RDX and Octo Today (HMX) and other pollutants mainly come from explosives and raw materials and intermediate products used in their manufacture. Most of these pollutants contain nitro groups, which are generally considered difficult to biodegrade or even non-biodegradable, and have acute toxicity; therefore, once explosive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08C02F1/28C02F1/72
Inventor 陈宝梁黄文海朱利中
Owner ZHEJIANG UNIV
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