Surfactant enhanced organic polluted soil electric-biological remediation method and device

A surfactant and organic pollution technology, applied in the field of surfactant-enhanced electro-bioremediation of organic polluted soil and organic polluted soil remediation, can solve problems such as low availability, large spatial differences in remediation efficiency, and low overall remediation efficiency.

Inactive Publication Date: 2016-07-13
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
View PDF11 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of low bioavailability of organic pollutants, large spatial differences in remediation efficiency, and low overall remediation efficiency in electrokinetic-biological joint remediation of organic polluted soil, and provide a surfactant-enhanced organic pollution Soil electrokinetic-bioremediation method and device, effectively improving the efficiency of bioremediation of organically polluted soil

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surfactant enhanced organic polluted soil electric-biological remediation method and device
  • Surfactant enhanced organic polluted soil electric-biological remediation method and device
  • Surfactant enhanced organic polluted soil electric-biological remediation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like Figure 1-2 As shown, the electric repair device includes a cathode chamber and an anode chamber. The cathode chamber is arranged in the center, and the anode chamber is arranged outside the cathode chamber. The electrodes are evenly arranged in the cathode chamber and the anode chamber. The cathode chamber and the anode chamber form a cylindrical electrode matrix structure. , the distance between each cathode in the cathode chamber and each anode in the anode chamber is equal, forming a symmetrical structure in space and field strength; the cathode and the anode are all connected to the electric control cabinet; the cathode chamber and A soil treatment chamber is arranged between the anode chambers, a cation ion exchange membrane is arranged between the cathode chamber and the soil, and an anion exchange membrane is arranged between the anode chamber and the soil.

[0027] In this example, petroleum hydrocarbon-contaminated soil was selected for remediation experi...

Embodiment 2

[0035] The added concentration of the surfactant is 400mg / L, the surfactant is an anion-nonionic surfactant, and the ratio of the anion-nonionic surfactant is 2:1; other steps are the same as in Example 1.

Embodiment 3

[0037] The added concentration of the surfactant is 700 mg / L, the surfactant is an anion-nonionic surfactant, and the ratio of the anion-nonionic surfactant is 10:1; other steps are the same as in Example 1.

[0038] Table 1 Basic conditions of the tested soil

[0039]

[0040] Table 2 Changes in oil content before and after treatment

[0041] group

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 relates to a surfactant enhanced organic polluted soil electric-biological remediation method and a surfactant enhanced organic polluted soil electric-biological remediation device, which can effectively improve the efficiency of traditional electric-biological remediation of organic pollutants. The surfactant enhanced organic polluted soil electric-biological remediation method comprises the following steps: designing a cylindrical electrode matrix configuration of an annular anode on the outer side of a central cathode; filling a soil remediation system with biochar immobilized microorganisms along the inner side of the anode to form an annular biological PRB (Permeable Reactive Barrier), and adding a surfactant into remediated soil by adopting an electric injecting mode. According to the method, the difficult problems that the organic pollutant bio-availability is low, the remediation efficiency spatial difference is large, and the overall remediation efficiency is low in the traditional soil electric-biological combined remediation are solved; the method can be used for ex-situ remediation of organic polluted soil, and can also be used for in-situ remediation.

Description

technical field [0001] The invention relates to the restoration technology of organic polluted soil, in particular to a method and device for electrokinetic-biological restoration of organic polluted soil strengthened by surfactant, and belongs to the technical field of environmental protection. Background technique [0002] After organic pollutants (petroleum hydrocarbons, pesticides, etc.) enter the soil, they can be closely combined with soil particles, change the soil structure, reduce soil permeability, affect soil microbial activity, and hinder plant growth. Among them, the "three causes" pollution is a serious threat Human health has brought great harm to the environment and regional ecosystems. Therefore, the development of efficient and feasible methods and technologies for organically polluted soil remediation is an important topic that researchers in this field have been paying attention to. [0003] Biodegradation is one of the main ways to remove organic pollut...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/08B09C1/10
Inventor 魏小娜李法云
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap