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

Composite remediation agent for groundwater remediation and preparation method and application thereof

A groundwater remediation and composite remediation technology, which is applied in the treatment of polluted groundwater/leachate, chemical instruments and methods, water/sewage treatment, etc. Long, high release efficiency

Inactive Publication Date: 2021-02-26
纳琦绿能工程有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the in-situ repair mainly uses repairing agents, which are mainly aimed at organic pollution, heavy metals and other single repairing agents, and their functions are relatively single.

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
  • Composite remediation agent for groundwater remediation and preparation method and application thereof
  • Composite remediation agent for groundwater remediation and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The composite restoration agent for groundwater restoration is made of the following substances in parts by mass: 22 parts of slag, 28 parts of oxygen release agent, 7 parts of Portland cement, 13 parts of filler, 18 parts of carbonized sludge, modified nano-zero price 5 parts of iron, 28 parts of pH buffer.

[0026] The oxygen release agent is calcium peroxide.

[0027] The filler is calcium-based bentonite.

[0028] The Portland cement is ordinary Portland cement.

[0029] The pH buffering agent is fly ash.

[0030] The preparation method of the composite restoration agent for groundwater restoration comprises the following steps:

[0031] (1) The gasification slag is burned at a high temperature of 900°C-1250°C, expands, is crushed after cooling, and is sieved to obtain slag particles with a particle size of 100 mesh;

[0032] (2) The air-dried sludge of domestic sewage treatment plant has a moisture content of less than 10%, then crushed and passed through an 80...

Embodiment 2

[0037] The composite restoration agent for groundwater restoration is made of the following materials in parts by mass: 24 parts of slag, 25 parts of oxygen release agent, 15 parts of Portland cement, 11 parts of filler, 17 parts of carbonized sludge, modified nano-zero price 14 parts of iron, 21 parts of pH buffer.

[0038] Described oxygen releasing agent is magnesium peroxide.

[0039] The filler is a mixture of zeolite and attapulgite in a mass ratio of 1:1.

[0040] The Portland cement is a mixture of ordinary Portland cement and composite Portland cement in a mass ratio of 1:1.

[0041] The pH buffering agent is kaolin.

[0042] The preparation method of the composite restoration agent for groundwater restoration comprises the following steps:

[0043] (1) The gasification slag is burned at a high temperature of 900°C-1250°C, expands, is cooled, crushed, and sieved to obtain slag particles with a particle size of 120 mesh;

[0044] (2) The air-dried sludge of domesti...

Embodiment 3

[0049] The composite restoration agent for groundwater restoration is made of the following materials in parts by mass: 14 parts of slag, 26 parts of oxygen release agent, 10 parts of Portland cement, 15 parts of filler, 15 parts of carbonized sludge, modified nano-zero price 15 parts of iron, 20 parts of pH buffer.

[0050] The oxygen release agent is magnesium peroxide.

[0051] The filler is zeolite.

[0052] The Portland cement is composite Portland cement.

[0053] Described pH buffering agent is tourmaline.

[0054] The preparation method of the composite restoration agent for groundwater restoration comprises the following steps:

[0055] (1) The gasification slag is burned at a high temperature of 900°C-1250°C, expands, is cooled, crushed, and sieved to obtain slag particles with a particle size of 120 mesh;

[0056] (2) The air-dried sludge of domestic sewage treatment plant has a moisture content of less than 10%, then crushed and passed through an 80-mesh sieve,...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a composite remediation agent for groundwater remediation, which is prepared by the following steps: firing gasified slag at a high temperature of 900-1250 DEG C, expanding, cooling, pulverizing, and screening to obtain slag particles; airing and crushing the sludge, carrying out high-temperature treatment at 650-700 DEG C under the protection of nitrogen, and crushing to obtain carbonized sludge particles; under the protection of nitrogen, stirring a FeSO<4> solution, polyvinylpyrrolidone and a NaBH4 solution, carrying out suction filtration, and washing to obtain modified nano zero-valent iron; and adsorbing the oxygen release agent on the surface of the carbonized sludge, mixing with slag, Portland cement, a filler, modified nano zero-valent iron and a pH buffer agent, pressing into flat sheets, calcining, cooling, and crushing to obtain the composite repairing agent. The composite remediation agent for groundwater remediation provided by the invention integrates multiple treatment methods such as an adsorption function, a chemical oxidation function and a catalytic oxidation function, is an effective composite remediation material, and the product has good adsorption and catalytic oxidation activity; the oxygen release duration is long, the release efficiency is high, and the sustainability of the underground water effect can be guaranteed.

Description

technical field [0001] The invention belongs to the technical field of groundwater restoration, and in particular relates to a composite restoration agent for groundwater restoration and its preparation method and application. Background technique [0002] Various human activities such as industrial waste discharge, pesticide and fertilizer abuse, and oil spills have caused serious damage to groundwater and soil. Currently, groundwater remediation methods mainly include ex-situ remediation and in-situ remediation. Ex-situ remediation has a large disturbance to groundwater and is easy to cause the diffusion of pollutants, so it is rarely used. Therefore, the in situ repair method has attracted more and more attention. At present, the in-situ restoration mainly uses restorative agents, which are mainly aimed at organic pollution, heavy metals and other single restoration agents, and their functions are relatively single. Contents of the invention [0003] The purpose of t...

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): C02F1/72C02F1/28C02F103/06
CPCC02F1/725C02F1/72C02F1/281C02F1/283C02F2103/06
Inventor 严卫林王存建周弋翔吕森伟
Owner 纳琦绿能工程有限公司
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