Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

In-situ air sparging repairing method of VOCs pollution in hyposmosis area

A repair method and low-permeability technology, applied in the field of in-situ aeration repair of VOCs polluted groundwater in low-permeability areas, can solve the problems of difficulty in aeration in low-permeability areas in saturated zones, change the permeability of low-permeability areas, etc., and solve the problem of difficult effective infiltration , Improve the passability and increase the permeability effect

Active Publication Date: 2018-12-21
SOUTHEAST UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there is no relevant literature on the status quo of difficult aeration in the low-permeability area of ​​the saturated zone, especially the research on artificially changing the permeability of the low-permeability area through related technologies.

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
  • In-situ air sparging repairing method of VOCs pollution in hyposmosis area
  • In-situ air sparging repairing method of VOCs pollution in hyposmosis area
  • In-situ air sparging repairing method of VOCs pollution in hyposmosis area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 , 2 As shown, an in-situ aeration repair method for VOCs-contaminated groundwater in low-permeability areas, splitting wells, aeration wells, extraction wells and corresponding connecting pipelines are respectively arranged in low-permeability pollution areas to form a saturated zone with low-permeability area pollution Area hydraulic splitting aeration repair site construction device.

[0021] Specifically: as figure 1 As shown in Fig. 1, a hydraulic splitting system is set above the low-permeability pollution area, and the splitting well is connected to the hydraulic pump through coaxial double hydraulic pipes; figure 2 As shown, the splitting wells are evenly arranged according to the range and size of the low-permeability area, and the splitting wells cover the low-permeability area in an equilateral triangle arrangement, and the spacing between the splitting wells is 4-6 m; image 3 As shown, the inside of the splitting well is a coaxial double...

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 a in-situ air sparging repairing method of VOCs pollution in a hyposmosis area, On the basis of a surfactant reinforced aeration repair method, multi-point hydraulic splittingis carried out on the hyposmosis polluted area by adopting a point-position controllable hydraulic splitting technology, a large amount of human fractures are generated in the area; and meanwhile, a pressure solution used for splitting is a surfactant solution, and aims to enhance the gas permeability of the hyposmosis polluted area, the desorption capacity of pollutants in fine-grained soil is enhanced, so that the problem that the hyposmosis polluted area is not easy to repair is solved. According to the method, the hydraulic splitting technology cooperates with the surfactant strengtheningeffect, the pressure solution used in a splitting process is a SDBS surfactant solution, and the concentration is 200-400 mg / L; a coaxial double-pipe pipeline is arranged inside a hydraulic split well, multi-point hydraulic splitting in different areas is realized by moving an inner pipe.

Description

technical field [0001] The invention belongs to the technical field of soil and groundwater restoration, and in particular relates to an in-situ aeration restoration method for VOCs-contaminated groundwater in a low-permeability area. Background technique [0002] Since the 1980s, many polluting enterprises involved in heavy industry, petrochemical industry, etc. have left a large number of polluted sites, and the site pollution caused by industrial solid waste pollution, petrochemical pollutants and other illegal discharges has become increasingly apparent, and the situation of groundwater pollution has become increasingly serious. According to the data of the China Geological Survey Bureau, nearly 90% of the groundwater in the country has been polluted to varying degrees, and volatile / semi-volatile organic pollutants are an important part of soil and groundwater pollution. [0003] Groundwater in-situ aeration remediation technology (In-situ Air Sparging, IAS) is a cost-ef...

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): B09C1/00
CPCB09C1/002B09C2101/00
Inventor 鹿亮亮刘志彬刘松玉王意毛柏杨刘锋唐紫琼
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com