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

Chromium contamination in-situ remediation method

An in-situ repair and chromium pollution technology, which is applied in the field of chromium pollution treatment, achieves the effect of improving utilization rate, simple construction equipment, and conducive to redevelopment and utilization

Inactive Publication Date: 2015-08-05
BCEG ENVIRONMENTAL REMEDIATION CO LTD
View PDF13 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the defects of existing chromium pollution control technology, the object of the present invention is to provide a kind of in-situ repair method of chromium pollution

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
  • Chromium contamination in-situ remediation method
  • Chromium contamination in-situ remediation method
  • Chromium contamination in-situ remediation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] In order to facilitate the understanding of the purpose, technical solutions and effects of the present invention, the present invention will now be further described in detail in conjunction with examples.

[0054] This embodiment provides a kind of in-situ repair system (hereinafter referred to as in-situ repair system) of chromium pollution, as figure 1 and figure 2 As shown, it includes the chemical mixing and injection system and the drilling system. The drilling system cooperates with the chemical mixing and injection system to directly inject the repairing agent into the site to be repaired through high-pressure equipment (grouting pump 2 of the chemical mixing and injection system) That is, in the saturated layer, the repair agent migrates and diffuses, contacts and reacts with Cr(VI), reduces and stabilizes Cr(VI), eliminates its health risks, and achieves the purpose of repair. The saturated layer is a saturated aquifer soil or a groundwater polluted area. ...

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 present invention discloses a chromium contamination in-situ remediation method, which comprises: 1) injection points are arranged and the dosage of a repair agent is determined, wherein it is ensured that the repair agent covers all the place to be repaired; 2) the repair agent is prepared; 3) a drilling system is provided with depth fixation equipment for positioning the injection points; and 4) the repair agent is subjected to high pressure injection. The in-situ remediation system suitable for the remediation method comprises the drilling system for supporting the operation and the agent mixing and injection system. According to the present invention, the large-scale infrastructure investment and building is not required, the stratum structure is not basically destroyed, the stratum condition does not affect the high pressure injection, the repair agent is uniformly distributed in the formed fracture cracks and provides advantages of targeting property, good repair effect, complete repair, and no bounce for the chromium contamination, the starting and the stopping can be performed at any time, the continuous large-scale construction can be achieved, and the engineering applications can be achieved.

Description

technical field [0001] The invention belongs to the technical field of chromium pollution treatment, and particularly relates to an in-situ repair method for chromium pollution, which is suitable for the chromium pollution restoration of saturated aquifer soil and groundwater. Background technique [0002] Since the 1950s and 1960s, my country's chromium salt production industry has produced a large amount of chromium slag. According to statistics, as of 2005, the historical stockpile of chromium slag has reached more than 4 million tons, and most of them have only done simple protection. Under the leaching effect of long-term atmospheric precipitation, Cr(VI) leachate gradually migrates downward to pollute soil and groundwater. In addition, in the printing and dyeing industry, leather industry and electroplating industry, the disorderly discharge of industrial wastewater will also pollute the soil and groundwater. In the underground environment, Cr(VI) mostly exists in the...

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): B09C1/08C02F1/62
Inventor 郭丽莉李书鹏张岳许超谭勇壁牛永超
Owner BCEG ENVIRONMENTAL REMEDIATION CO LTD
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