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Polluted site risk control barrier material and application thereof

A barrier material and risk technology, applied in the field of risk management and control barrier materials for polluted sites, can solve the problems of low strength, poor mechanical properties, and high cost of barrier walls, and achieve the effects of expanding resource utilization value, low cost, and easy source.

Pending Publication Date: 2022-04-15
江苏省环境工程技术有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reserves of sodium-based bentonite in my country are very small, and natural bentonite is mainly calcium-based bentonite with poor anti-seepage performance. In engineering, calcium-based bentonite needs to be sodium-modified to obtain artificial sodium-based bentonite with high anti-seepage performance. In engineering practice, the cost of using artificial sodium bentonite or imported natural sodium bentonite is often high; at the same time, bentonite materials mainly realize the barrier of pollutants by filling the pores of soil particles, and the barrier wall formed by it has low strength , the mechanical properties are poor, and when the upper part of the barrier needs to bear the load, it is prone to deformation and damage

Method used

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  • Polluted site risk control barrier material and application thereof
  • Polluted site risk control barrier material and application thereof

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Experimental program
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Effect test

Embodiment 1-9

[0052] Carry out embodiment 1-9 respectively according to the data in the following table 1:

[0053] Table 1 embodiment 1-9 numerical summary table

[0054] Example Value A Value B Value C Value D Value E 1 8 36h 1∶1.5 10％：10％：80％ 1∶5 2 9 24h 1∶2 20％：18％：62％ 1∶5 3 10 18h 1∶2.5 30％：25％：45％ 1∶5 4 8 36h 1∶1.5 10％：10％：80％ 1∶12.5 5 9 24h 1∶2 20％：18％：62％ 1∶12.5 6 10 18h 1∶2.5 30％：25％：45％ 1∶12.5 7 8 36h 1∶1.5 10％：10％：80％ 1∶20 8 9 24h 1∶2 20％：18％：62％ 1∶20 9 10 18h 1∶2.5 30％：25％：45％ 1∶20

[0055] 1.1 Preparation of sulfate-reducing bacteria agent:

[0056] Wash the straw, leaves or plant seed shells to remove impurities on the surface and dry them, then carbonize them in an anaerobic environment, and then crush and sieve the carbonized materials to prepare sterilized biochar fiber materials; Mix the source liquid nutrient solution with the sterilized biochar fiber material evenly, ad...

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Abstract

The invention discloses a polluted site risk control barrier material and application thereof. The barrier material is prepared by mixing the following components in percentage by mass: 10-30% of a sulfate reducing bacterium agent, 10-25% of a shrimp and crab shell preparation and 45-80% of an inorganic material mixture. A low-permeability barrier can be formed in a polluted stratum, migration of underground water pollutants is efficiently blocked, effective risk management and control of polluted land parcels are achieved, and meanwhile the barrier material is convenient to apply, wide in raw material source, green and low-carbon.

Description

technical field [0001] The invention relates to the technical field of environmental governance, in particular to a barrier material for risk management and control of polluted sites and its application. Background technique [0002] Wall technology is often used to temporarily or long-term block the spread of the following types of pollutants: 1. Soil and water pollution caused by improper disposal of toxic and hazardous waste or leakage of pollutants; 2. Large-scale waste landfills, such as landfills Soil and water environmental pollution caused by leachate leakage in landfills and mine tailings ponds. Wall technology works by using low-permeability walls to encapsulate pollutants or contaminated soil and water, preventing the spread of pollutants to the surrounding environment. [0003] Cement and sodium bentonite are the two most commonly used barrier materials at home and abroad. Among them, the cost of cement production and use is low, but the barrier barrier formed ...

Claims

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Application Information

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IPC IPC(8): B09C1/10B09C1/00B09C1/08C09K17/40
CPCB09C1/10B09C1/00B09C1/08C09K17/40B09C2101/00
Inventor 丁亮曲常胜夏威夷王栋刘海聂溧张强朱迟
Owner 江苏省环境工程技术有限公司
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