Efficient chemical oxidation repairing method for organic polluted soil

A technology of organic pollution and chemical oxidation, applied in the restoration of polluted soil, etc., can solve the problems of affecting the chroma of the effluent, difficult to handle, and large chemical sludge production, and achieves the benefits of removal, promotion of dissolution, and human and environmental safety Effect

Active Publication Date: 2018-09-04
BEIJING GEOENVIRON ENG & TECH
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the controllable release of OH overcomes the classic Fenton reagent's easy reaction with soil organic matter and the generation of H 2 o 2 Ineffective decomposition; on the oth

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0045] Example 1

[0046] Select the soil with heavy organic pollution in the site, the content of BHC is 48.3mg / kg, and the content of benzo(a)pyrene is 4.7mg / kg. Accurately weigh 10g of organically contaminated soil, and add 30ml of water to the soil to make a muddy soil mixture. Add 0.1g of GLDA and 0.4g of Tween80 to the muddy soil mixture in sequence, stir well, and then add 0.6g of SPC. The reaction system was placed in a benchtop constant temperature culture shaker at room temperature (25°C) and oscillated for 24 hours, and oscillated at a rotation speed of 180r / min. After the reaction, the organic pollutants in the soil are quantitatively detected. The results showed that the degradation rate of BHC in the soil reached 90%, and the degradation rate of benzo(a)pyrene reached 85%.

Example Embodiment

[0047] Example 2

[0048] Select the heavily polluted soil of BHC in the site, the content of BHC is 45.0mg / kg, and the content of benzo(a)pyrene is 4.6mg / kg. Accurately weigh 10g of organic contaminated soil, and add 10ml of water to the soil to make a muddy soil mixture. Add 0.09g of GLDA and 0.38g of Tween80 to the muddy soil mixture in sequence, stir well, and then add 0.55g of SPC. The reaction system was placed in a benchtop constant-temperature culture oscillator and oscillated at room temperature for 18 hours, and oscillated at a speed of 190 r / min. After the reaction, the organic pollutants in the soil are quantitatively detected. The results showed that the degradation rate of BHC in the soil reached 84%, and the degradation rate of benzo(a)pyrene reached 81%.

Example Embodiment

[0049] Example 3

[0050] Select the heavily polluted soil of BHC in the site, the BHC content is 42.6mg / kg, and the benzo(a)pyrene content is 4.9mg / kg. Accurately weigh 10g of organically contaminated soil, add 25ml of water to the soil to make a muddy soil mixture. Add 0.075g of GLDA and 0.28g of Tween80 to the muddy soil mixture in sequence, and after stirring evenly, add 0.48g of SPC. The reaction system was placed in a benchtop constant temperature culture shaker and oscillated at room temperature for 18 hours, and oscillated at a rotation speed of 130 r / min. After the reaction, the organic pollutants in the soil are quantitatively detected. The results showed that the degradation rate of BHC in the soil reached 81%, and the degradation rate of benzo(a)pyrene reached 78%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an efficient chemical oxidation repairing method for organic polluted soil. The efficient chemical oxidation repairing method for the organic polluted soil comprises the following steps: mixing the organic polluted soil and water to prepare a slurry-state soil mixed solution; adding a binary compound organism-nonionic surfactant into the slurry-state soil mixed solution andthen adding an oxidizing agent; and performing oscillation in an oscillator and degrading the organic pollutant in the soil after oscillation treatment, wherein the oxidizing agent is SPC and the binary compound organism-nonionic surfactant is GLDA and Tween80. The efficient chemical oxidation repairing method for the organic polluted soil has the advantages of simple process condition, low operation requirement, high treatment efficiency and the like, and is suitable for repairing various kinds of organic polluted soil.

Description

technical field [0001] The invention belongs to the technical field of treatment and repair of organic polluted soil, and in particular relates to an efficient chemical oxidation repair method for organic polluted soil. Background technique [0002] Organic pollutants in the environment refer to organic compounds that cause environmental pollution and have harmful effects on the ecosystem, mainly artificially synthesized organic pollutants. Synthetic organic pollutants refer to a class of organic chemical substances that do not exist in the natural environment and are artificially synthesized, such as various pesticides, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, and synthetic rubber. Due to the widespread use in industry and agriculture, a large amount of artificially synthesized organic pollutants are released into the environment. At present, environmental pollution caused by organic pollutants has become a global problem. How to effectively remove organ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B09C1/08
CPCB09C1/08
Inventor 方华祥刘泽军陈望明甄胜利魏丽吕正勇李淑彩范吉强朱湖地郭明达田森张岩唐先进
Owner BEIJING GEOENVIRON ENG & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products