Intelligent experimental device for measuring penetration of colloid in sand column in real time and operation method thereof

Abstract

The invention discloses an intelligent experimental device for measuring the penetration of a colloid in a sand column in real time. The intelligent experimental device is provided with an overflowing buffer device which can prevent the colloid from being abnormally deposited on a sand column section. The intelligent experimental device disclosed by the invention can be used for measuring concentration, temperature and pH value of the colloid transferred in the sand column through an intelligent real-time mode and measuring the quantity and size distribution condition of the colloid intercepted along a flow path through sampling when an experiment is ended and can effectively reveal the transfer mechanism of the colloid in a porous medium. The invention also discloses an operation method of the experimental device. The operation method disclosed by the invention can be used for measuring the quantity and size distribution condition of the intercepted colloid along the flow path, thereby solving the problem that the flow path parameters of the colloid are difficult to measure in the traditional sand column experiment.

Description

technical field [0001] The invention belongs to the technical fields of water conservancy engineering, environmental engineering and agricultural engineering, and in particular relates to an intelligent experimental device for real-time measurement of colloid penetration in a sand column. Background technique [0002] In the past, many scholars explored the interception of colloids in porous media through sand column experiments. They only measured the concentration of the tail water in the experiment to calculate the interception of colloids, and regarded the migration process of colloids in sand columns as a black box. Without further exploration, it is impossible to explore the stratification of colloids during the migration process and the change of particle size, and in the specific implementation process, there are still the following difficulties. Many parameters are difficult to measure directly, and cumbersome operations and certain reasoning are required conversion...

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Problems solved by technology

[0002] In the past, many scholars explored the interception of colloids in porous media through sand column experiments. They only measured the concentration of the tail water in the experiment to calculate the interception of colloids, and regarded the migration process of colloids in sand columns as a black box. Without further exploration, it is impossible to explore the stratification of colloids during the migration process and the change of particle size, and in the specific implementation process, there are still the following difficulties. Many parameters are difficult to measure directly, and cumbersome operations and certain reasoning are required transformation to obtain, indicating that the measurement error is large

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