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Closed underground water solute migration simulation experimental device

A technology for simulating experimental devices and solute migration, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of unapplicable, simple structure and low universal applicability, lack of airtight protection devices, etc.

Inactive Publication Date: 2014-12-24
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these experimental devices are designed for specific polluting solutes, with simple structures and low universal applicability. Due to the lack of airtight protection devices, they cannot be applied to some volatile or semi-volatile toxic polluting solutes.

Method used

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  • Closed underground water solute migration simulation experimental device
  • Closed underground water solute migration simulation experimental device
  • Closed underground water solute migration simulation experimental device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Utilize the device of the present invention to carry out the parallel experiment of chlorobenzene dechlorination under the condition of constant flow rate, adopt 3 groups of parallel experimental columns, mark as No. 1 column, No. 2 column and No. 3 column, five sampling ports of every column, the first to bottom from top to bottom 1. The third and fifth sampling ports (marked as A, B and C sampling ports respectively) are used for sampling and testing.

[0066] (1) Preparation of experimental materials

[0067] According to the configuration of 100000μg / L 1,2-dichlorobenzene solution (adding an appropriate amount of methanol to promote dissolution), close the outlet pipe of one of the liquid supply bottles (No. 1 liquid supply bottle), and fill the No. 1 liquid supply bottle. 1,2-dichlorobenzene solution, close the vent pipe of No. 1 liquid supply bottle, and set aside; another liquid supply bottle (No. 2 liquid supply bottle) contains a part of deionized water, close ...

Embodiment 2

[0082] The specific operation method of using the device of the present invention to carry out parallel experiments on soil desalination (NaCl) under constant flow conditions (four groups of experimental soil columns, respectively adopting three groups of medium fine sand and one group of silty fine sand) is:

[0083] (1) Preparation of experimental materials

[0084] Two liquid supply bottles are filled with deionized water, close the vent pipe of the liquid supply bottle, and close all the flow control valves after the air in the flow controller is discharged, and stand by; the experimental soil (10 liters of medium fine sand, fine powder 4 liters of sand) was washed 3 times with deionized water, soaked in brine with a concentration of 0.035g / L for 48 hours, and then used; ) with pure water, put them in containers and soak them in deionized water for later use; calculate the simulated experiment flow rate, sampling time and end time of the experiment, and plan the sampling s...

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Abstract

The invention discloses a closed underground water solute migration simulation experimental device which comprises a liquid supply unit, a parallel experimental unit, a liquid waste recovery unit, a closed combined cabinet and a waste gas recovery unit, wherein the liquid supply unit provides a solution for the parallel experimental unit, and the flow of effluent or a water head can be controlled; the parallel experimental unit is used for an underground water solute migration simulation parallel experiment, and the experimental solute migration process is monitored through sampling; and the liquid waste recovery unit is used for recovering wastewater generated by the experiment. A closed space is formed by the closed combined cabinet, toxic volatile polluted solute gas is prevented from diffusing, the waste gas recovery unit is used for collecting volatile solutes in the experimental process, and atmospheric pollution is avoided. The experimental device disclosed by the invention is suitable for a simulation experiment of volatile or semi-volatile polluted solutes and has the characteristics of sustainability and high stability. Meanwhile, the experimental equipment is simplified, the experimental cost is saved, and the uniformity of the water head or flow conditions during the parallel experiment is guaranteed, so that comparative analysis of the parallel experiment results is facilitated.

Description

technical field [0001] The invention belongs to the fields of environmental engineering and agricultural engineering, and in particular relates to a closed underground water solute migration simulation experiment device, which is suitable for indoor soil column experiments for underground water solute migration simulation, and can be used for volatile or semi-volatile pollution solute migration simulation experiments. Background technique [0002] The groundwater environment is relatively fragile. Once the pollution has serious consequences and lasts for a long time, it is difficult to control, especially various soluble pollutants (solutes) continue to migrate, attenuate, absorb, decompose and interact with the groundwater, which will bring great harm to the groundwater pollution control. Come very difficult. Accurately grasping the migration and movement of polluting solutes with groundwater is of great significance to the control of groundwater environmental pollution and...

Claims

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Application Information

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IPC IPC(8): G01N13/04
Inventor 赵忠伟吕辉华国芬金光球陶小虎陈斌
Owner HOHAI UNIV
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