Indoor test device for detecting the effect of anti-seepage curtain wall on blocking ion diffusion

Abstract

The invention provides a laboratory test device for detecting the effect of seepage-proof curtain walls on blocking ion diffusion, belongs to the field of environment civil engineering, and particularly relates to a testing device for detecting the effect of seepage-proof curtain walls (such as cement bentonite) on blocking the polluted ion migration in a laboratory. The device is a rectangular box-packed box body and is divided into three hollow bins by two curtain walls, the middle hollow bin is used for accommodating a polluted ionic solution prepared manually, the hollow bin on two sides are used for accommodating unpolluted clean soil, eight organic glass perforated plates are placed in each of the hollow bins on two sides, every two organic glass perforated plates form a groove with the width of about 1 cm, and the grooves are filled with distilled water. By measuring the concentration of the polluted-ion-containing solution in the grooves, the diffusion coefficient that polluted ion pass through the seepage-proof curtain walls and the service life of the seepage-proof curtain walls can be calculated, and the effect of the seepage-proof curtain walls on blocking the ion migration can be evaluated.

Description

technical field [0001] The invention belongs to the field of environmental civil engineering, and is a test device for testing the effect of an anti-seepage curtain wall (such as cement bentonite) in blocking pollution ion migration in a laboratory. Background technique [0002] At present, the environmental problems brought about by the rapid economic development are becoming more and more prominent, and the disposal of urban garbage is also attracting more and more people's attention. At present, the treatment methods of domestic waste mainly include stacking, landfilling, incineration and composting. [0003] Among them, the landfill method has been widely used at home and abroad because of its lowest disposal cost and highest degree of finalization. As an important part of landfill engineering, geological environment plays a key role in the effect of sanitary landfill of garbage. The failure of many landfills is mostly due to the inability of the rock and soil around o...

AI Technical Summary

Problems solved by technology

However, since it cannot completely block the migration and diffusion of ions, it is necessary to estimate the breakdown time and service life of the anti-seepage curtain wall

Although the determination of diffusion parameters is the most accurate in field tests, it will take a lot of time to do so, it is basically impossible to do a lot of repeated tests and comparisons, and it will pollute the environment, so it is generally determined by laboratory model tests

Some existing models and methods are only for clay curtain walls, mainly to measure the diffusion parameters (such as diffusion coefficient) of pollutants (such as ions) in clay curtain walls in the laboratory, and a few for cement-soil isolation curtain walls, the production of curtain walls The curtain wall itself is prone to damage (such as cracks) during the process of testing and sampling, and sampling testing is also quite difficult

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