Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for remediating heavy metal polluted water in situ through osmotic response brick and application

An in-situ repair and heavy metal technology, applied in the field of environmental engineering, to prevent heavy metal non-point source pollution and ensure water conservancy safety

Active Publication Date: 2017-05-10
天津市生态环境科学研究院
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology places the reaction material perpendicular to the flow direction of the polluted plume in groundwater. When the plume flows through the reaction wall, it interacts with the reaction material physically, chemically and biologically to be degraded, adsorbed, precipitated or removed. , so that the pollution plume can be treated. The permeable reactive wall technology was mainly used for the restoration of polluted groundwater in the early stage. In the future, the application of this technology to the restoration of surface polluted water remains to be further studied.

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
  • Method for remediating heavy metal polluted water in situ through osmotic response brick and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The osmotic reaction brick for in-situ restoration of heavy metal polluted water consists of a surface layer, a middle reaction layer and a bottom layer. Both the surface layer and the bottom layer are composed of 35 parts of coarse iron tailings, 5 parts of Portland cement, 30 parts of coarse steel slag, and 30 parts of crushed stone. The middle reaction layer is composed of 90 parts of iron-carbon micro-electrolytic ceramics. Granules and 10 parts of Portland cement. The above-mentioned materials with a good ratio are formed by pressure and vibration with a vibrating brick-making machine. The size is 240×115×90 mm. Good response to bricks.

[0022] During the implementation, the osmotic reaction brick is used as the revetment of the mercury-contaminated farmland. When the mercury-contaminated water in the farmland seeps through the revetment made of the reaction brick, it will undergo adsorption and ion exchange reactions with the iron-carbon micro-electrolytic cerams...

Embodiment 2

[0024] The osmotic reaction brick for in-situ restoration of heavy metal polluted water is characterized in that it is composed of a surface layer, an intermediate reaction layer and a bottom layer; It is made by mixing gravel and water, and the middle reaction layer is made by mixing iron-carbon micro-electrolytic ceramsite and Portland cement. Both the surface layer and the bottom layer are composed of the following components:

[0025] 40 parts of coarse iron tailings sand particle size 0.2 mm 10 parts of Portland cement

[0026] 30 parts of crude steel slag with a particle size of 0.4 mm and 20 parts of gravel with a particle size of 1.0 mm;

[0027] The intermediate reaction layer is composed of 85 parts of iron-carbon micro-electrolytic ceramsite and 15 parts of Portland cement with a particle size of 3.0 mm.

Embodiment 3

[0029] The osmotic reaction brick for in-situ restoration of heavy metal polluted water is characterized in that it is composed of a surface layer, an intermediate reaction layer and a bottom layer; It is made by mixing gravel and water, and the middle reaction layer is made by mixing iron-carbon micro-electrolytic ceramsite and Portland cement. Both the surface layer and the bottom layer are composed of the following components:

[0030] 30 parts of coarse iron tailings sand particle size 0.6 mm 10 parts of Portland cement

[0031] 30 parts of crude steel slag particle size 0.4 mm 30 parts of gravel particle size 5.0 mm;

[0032] The intermediate reaction layer is composed of 90 parts of iron-carbon micro-electrolytic ceramsite and 10 parts of Portland cement with a particle size of 12.0 mm.

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 discloses a method for remediating heavy metal polluted water in situ through an osmotic response brick and application. The osmotic response brick consists of a surface layer, a middle reaction layer and a bottom layer; the surface layer and the bottom layer are prepared by mixing crude iron tailing sand, silicate cement, coarse steel slag, gravels and water; the middle reaction layer is prepared by mixing iron-carbon micro-electrolysis haycite and silicate cement; the osmotic response brick is molded by pressurization and vibration of a brick making machine. For the water, a purification system device used in the method has the mercury removal rate of 85 to 95 percent, the arsenic removal rate of 80 to 90 percent, the chromium removal rate of 80 to 95 percent, the cadmium removal rate of 85 to 90 percent, the lead removal rate of 85 to 95 percent and the thallium removal rate of 70 to 85 percent. The method disclosed by the invention is applicable to treatment and ecological recovery of heavy metal polluted water such as heavy metal polluted farmland recession water, flood water of a tailing dam and water drained from a tailing slag storage yard, and is a safe and efficient heavy metal polluted water in-situ remediation technology.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and relates to an in-situ purification method for heavy metal-polluted water bodies, more specifically, a method for in-situ repairing heavy metal-polluted water bodies by osmotic reaction bricks and its application. Background technique [0002] With the process of urbanization and industrial and agricultural production, a large amount of untreated waste water, waste residue and waste gas containing heavy metals are discharged into the farmland environment, causing a large amount of farmland soil to be polluted to varying degrees. Heavy metal pollution in farmland soil refers to biologically toxic mercury, chromium, cadmium, lead, copper, nickel, antimony, thallium, zinc, etc., and metalloid arsenic. Quantity, population structure, and soil enzyme activity have negative effects, leading to a decline in soil fertility, and interfering with the normal metabolic process of crops, ...

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): C02F1/00C04B28/04C02F101/20C02F101/22C02F101/10
CPCC02F1/00C04B28/04C02F2101/103C02F2101/22C02F2101/20C04B18/12C04B18/142C04B14/02C04B18/023
Inventor 袁敏霍永青王铁铮孙静曾猛宋兵魁赵晶磊廖光龙
Owner 天津市生态环境科学研究院
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com