Indoor multistage simulated leaching test method

Abstract

The invention discloses an indoor multistage simulated leaching test method which comprises the following steps: (1) establishing an indoor multistage simulated leaching test device, wherein a leaching solution storage device is arranged above a soil body container; a graduated scale is arranged on the side surface of the leaching solution storage device; a bottom pinhole of the leaching solution storage device is formed in the bottom of the leaching solution storage device; the lower part of the leaching solution storage device is connected with the soil body container; the soil body container is arranged between the leaching solution storage device and a leaching solution collector; a soil body container bottom gap is formed in the bottom of the soil body container; a permeable stone is arranged on the soil body container; a pinhole gasket is arranged at the joint of the upper part of the soil body container and the leaching solution storage device; one or more soil body containers can be set according to the test requirements; the leaching solution collector is arranged on the lowest part of a device body; and a valve is arranged on the outer side of the bottom of the device body; and (2) injecting a quantitative leaching solution into the leaching solution storage device, enabling the leaching solution to flow into a soil body sample by virtue of the pinhole gasket, and finally enabling the leaching solution to flow into the leaching solution collector. According to the method disclosed by the invention, the multistage undisturbed samples can be loaded, the leaching depth can be measured, and the device is small in sample disturbance, simple in structure and convenient to use.

Description

technical field [0001] The invention relates to a laboratory leaching simulation method, in particular to an indoor multi-stage simulation leaching test method. Background technique [0002] With the rapid development of my country's industry, the pollution of air, groundwater, and soil is also increasing. In order to protect the ecological environment and the sustainable development of the economy, the impact of these pollution on soil, buildings, etc. is gradually being paid attention to. For example, in the laboratory to simulate the impact of acid rain, pesticides, etc. on various types of soil, and the vertical migration of various elements in the soil. In the actual test, it is necessary to bury pipes in the test soil to collect the leaching water, and it is necessary to surround the test area around the soil, so that although the test can reflect the actual situation of the soil, the test disturbs the soil greatly, and the leaching solution It will also cause polluti...

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Problems solved by technology

In the actual test, it is necessary to bury pipes in the test soil to collect the leaching water, and it is necessary to surround the test area around the soil, so that although the test can reflect the actual situation of the soil, the test disturbs the soil greatly, and the leaching solution It will also pollute the lower soil, and the experimental research process is too long, the workload is heavy, and a lot of manpower and material resources are needed

[0003] Most of the existing indoor leaching tests are the traditional soil column leaching method, but this method has a large disturbance to the soil, and it is easy to form a local circulation of the soil. The long-term test of the soil is likely to cause a large amount of loss, and the existing device is still Unable to determine the depth of leaching on the soil

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