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Sludge-based microporous frame capture net wall and method for remediating groundwater heavy metal pollution

A technology for capturing nets and groundwater, applied in the field of environmental engineering, can solve the problems of poor selectivity of adsorption materials, limited active centers, and easy falling off of loads, and achieves high strength stability, improved adsorption efficiency, and good reliability.

Active Publication Date: 2018-01-19
山西青舟环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adsorbent materials can also be used to restore groundwater, but generally face the problem of poor selectivity of adsorbent materials
There is also activated carbon technology that loads various metals and other active components on the adsorption material, but its active center is limited, the load is easy to fall off, and it is susceptible to rapid failure due to environmental influences

Method used

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  • Sludge-based microporous frame capture net wall and method for remediating groundwater heavy metal pollution
  • Sludge-based microporous frame capture net wall and method for remediating groundwater heavy metal pollution

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 and figure 2 As shown, a sludge-based microporous frame capture net wall is composed of multiple three-dimensional capture modules to form a capture net wall. The three-dimensional capture module is composed of a core area and a membrane wall. The core area is Sludge-based microporous frame hard balls 2 carrying nano-Fe(0), the membrane wall is sludge-coal tar pitch carbonized membrane 1, and sludge-based micro-porous frame hard balls carrying nano-Fe(0) are filled in sludge —The cylindrical three-dimensional capture module is formed in the coal tar pitch carbonization membrane.

[0034] The sludge-based microporous framework hard ball carrying nano-Fe(0) of the present invention is made through the following steps:

[0035] (1) Take the dewatered sludge and heat it at 105°C for 26 hours, then heat it at 85°C for 10 hours, then dry it, crush it, and pass it through a 45mm sieve to make dewatered sludge dry powder;

[0036] (2) Get sodium lauryl sulf...

Embodiment 2

[0050] Such as figure 1 and figure 2 As shown, a sludge-based microporous frame capture net wall is composed of multiple three-dimensional capture modules to form a capture net wall. The three-dimensional capture module is composed of a core area and a membrane wall. The core area is Sludge-based microporous frame hard balls 2 carrying nano-Fe(0), the membrane wall is sludge-coal tar pitch carbonized membrane 1, and sludge-based micro-porous frame hard balls carrying nano-Fe(0) are filled in sludge —The cylindrical three-dimensional capture module is formed in the coal tar pitch carbonization membrane.

[0051] The sludge-based microporous framework hard ball carrying nano-Fe(0) of the present invention is made through the following steps:

[0052] (1) Take the dewatered sludge and heat it at 110°C for 30 hours, then heat it at 90°C for 12 hours, then dry it, crush it, and pass it through a 45mm sieve to make dewatered sludge dry powder;

[0053] (2) Get sodium lauryl sulf...

Embodiment 3

[0067] Such as figure 1 and figure 2 As shown, a sludge-based microporous frame capture net wall is composed of multiple three-dimensional capture modules to form a capture net wall. The three-dimensional capture module is composed of a core area and a membrane wall. The core area is Sludge-based microporous frame hard balls 2 carrying nano-Fe(0), the membrane wall is sludge-coal tar pitch carbonized membrane 1, and sludge-based micro-porous frame hard balls carrying nano-Fe(0) are filled in sludge —The cylindrical three-dimensional capture module is formed in the coal tar pitch carbonization membrane.

[0068] The sludge-based microporous framework hard ball carrying nano-Fe(0) of the present invention is made through the following steps:

[0069] (1) Take the dewatered sludge and heat it at 108°C for 28 hours, then heat it at 87°C for 11 hours, then dry it, crush it and pass it through a 45mm sieve to make dewatered sludge dry powder;

[0070] (2) Get sodium lauryl sulfa...

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Abstract

The invention relates to a sludge-based micro-pore framework capturing mesh wall and a method for repairing heavy-metal pollution of underground water and belongs to the technical field of environmental engineering. The invention aims at providing the sludge-based micro-pore framework capturing mesh wall which takes modified sludge as a foundation and the method for repairing the heavy-metal pollution of the underground water, which can be used for carrying out targeting reduction and adsorption aiming at a target on heavy-metal pollutants in the underground water. The sludge-based micro-pore framework capturing mesh wall provided by the invention is characterized in that a capturing mesh wall is composed of a plurality of stereoscopic capturing modules; each stereoscopic capturing module is formed by a core region and a membrane wall through compounding, wherein each core region is a sludge-based micro-pore framework hard ball carrying nano Fe (0) and each membrane wall is a sludge-coal pitch carbonized membrane; the sludge-based micro-pore framework hard balls carrying the nano Fe (0) are filled into the sludge-coal pitch carbonized membranes to form the cylindrical stereoscopic capturing module.

Description

technical field [0001] The invention relates to a sludge-based microporous frame trapping net wall and a method for repairing groundwater heavy metal pollution, belonging to the technical field of environmental engineering. Background technique [0002] Groundwater pollution is an important environmental issue related to the national economy. Pollutants produced by human activities seep into the ground, leading to deterioration of groundwater quality. In recent years, groundwater pollution in various parts of our country has become increasingly serious. According to statistics, 60% of our country's groundwater environment is in serious or relatively serious pollution. Typical groundwater pollution includes: saline water intrusion, nitrate pollution, petrochemical product pollution, landfill seepage pollution. Among them, the heavy metals lead, chromium, cadmium, manganese, arsenic and copper are the main polluting elements. At present, the typical groundwater pollution re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02C02F1/28C02F1/70B01J20/30C02F101/20
CPCB01J20/02C02F1/281C02F1/705C02F2101/20C02F2103/06
Inventor 李平张弛曹青张思思梁冰蕖张晋嵩
Owner 山西青舟环境科技有限公司
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