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Simulated remediation system and method for underground water containing 1, 2-dichloroethane and sulfate

A dichloroethane and sulfate technology, applied in chemical instruments and methods, contaminated groundwater/leachate treatment, water pollutants, etc., can solve the high pH requirements of the reaction system, chemical repair methods and repair system application effects Unsatisfactory, poor system operation stability and other problems, to achieve the effect of repair process optimization

Active Publication Date: 2020-11-13
INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a simulated repair system and method for groundwater containing 1,2-dichloroethane and sulfate, to solve the problem of unsatisfactory application effects of existing chemical repair methods and repair systems, poor system operation stability, and poor response to reactions. Problems such as high system pH requirements

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  • Simulated remediation system and method for underground water containing 1, 2-dichloroethane and sulfate
  • Simulated remediation system and method for underground water containing 1, 2-dichloroethane and sulfate
  • Simulated remediation system and method for underground water containing 1, 2-dichloroethane and sulfate

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[0059] Below in conjunction with embodiment the present invention is described in further detail, and following embodiment is only as illustration, does not limit the present invention in any way.

[0060] 1,2-Dichloroethane (1,2-Dichloroethane) is a colorless transparent oily liquid with a chloroform-like odor, and is a relatively simple volatile chlorinated organic pollutant in groundwater; 1,2 -Dichloroethane has a density of 1.253g / mL, a relative vapor density (air=1) of 3.35, a solubility of 8.7g / L, a boiling point of 83.5°C, and a vapor pressure of 12mmHg (25°C); it is slightly soluble in water and can be mixed with ethanol and chloroform , Miscible with ether. Due to its good physical and chemical properties, 1,2-dichloroethane has been widely used in the fields of industry, agriculture and life, so it is a relatively common volatile and highly toxic chlorinated hydrocarbon organic compound in groundwater. DNAPL represents one of the pollutants.

[0061] Sulfate often...

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Abstract

The invention provides a simulated remediation system and method for underground water containing 1, 2-dichloroethane and sulfate. According to the system, a rectangular box-type shell with an openingin the top is sequentially divided into a pollution source section, a pollutant migration and transformation section and a pollutant remediation section from left to right; an oxide filling layer filled with a mixture of persulfate, tourmaline, pyrite and quartz sand and a desulfurized material filling layer filled with a mixture of tourmaline, quartz sand and sulfate reducing bacteria are sequentially arranged on a sample space layer of the pollutant remediation section from left to right. The pH value and oxidation-reduction potential of the aquifer are optimized, the oxidability of a Fenton-like system in the underground water and the activity of the sulfate reducing bacteria are integrally improved, and the effectiveness and practicability of a biological remediation system and a chemical oxidation system in industrial polluted underground water remediation are obviously improved.

Description

technical field [0001] The invention relates to the technical field of contaminated groundwater treatment, in particular to a simulated restoration system and method for groundwater containing 1,2-dichloroethane and sulfate. Background technique [0002] Groundwater is a major participant in the hydrological cycle, and is extremely important for urban and rural water supply systems in developing countries. It is an important source of water supply systems and a major source of regionally dispersed water supply systems. The rapid growth of population, coupled with the weak awareness of environmental protection, the substandard discharge of sewage, the excessive application of pesticides and fertilizers, the unreasonable landfill of garbage, and the unscientific management of industrial production wastewater have led to complex pollution of groundwater, especially The problem of groundwater pollution is more prominent due to refractory organic matter. [0003] 1,2-Dichloroeth...

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Application Information

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IPC IPC(8): C02F9/14C02F101/10C02F101/36C02F103/06
CPCC02F1/722C02F1/725C02F3/345C02F1/48C02F2101/36C02F2101/101C02F2103/06Y02A20/20
Inventor 崔海炜靳盛海吕晓立王金翠张英何泽
Owner INST OF HYDROGEOLOGY & ENVIRONMENTAL GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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