Trough for simulating groundwater pollution

Abstract

The invention provides a trough for simulating groundwater pollution. The simulated trough at least comprises a trough which is internally filled with an aquifer medium, an aquifuge medium and a lens which are used for simulating typical hydrogeology unit; the simulated trough is provided with an underground water recharge area, a runoff area and a discharge area sequentially from the trough head and the trough body to the trough tail; a hydraulic control device supplies water from the underground recharge area located at the trough head; the runoff area at the trough body comprises a water-distribution and water-rock interaction section containing a porous barrier and a pollution restoration device; the water is discharged out from the discharge area located at the trough tail; the hydraulic control device comprises at least two water boxes with adjustable height; the two water boxes are arranged at two ends of the trough body respectively; a water level difference exists between the two water boxes so as to provide an underwater power field; a plurality of monitoring holes and contamination injection holes are arranged above the trough; and the monitoring holes are connected with the monitoring system. The simulated trough for simulating the groundwater pollution has the advantages of integrating simulating, monitoring and restoring functions into a whole.

Description

technical field [0001] The invention relates to a groundwater pollution simulation tank, which simultaneously has the functions of "simulation-monitoring-repair", and belongs to the technical fields of environmental science and engineering, groundwater science and engineering, and the like. Background technique [0002] In recent decades, the process of industrialization and urbanization has brought about groundwater depletion and water quality deterioration worldwide, and the concentrations of different elements and their compounds detected therein are rare for groundwater formed under natural conditions. In terms of their types, 765 synthetic organic compounds have been found in drinking water in the world; more than 180 have been found in groundwater, and the number and types are still increasing rapidly. The harm of groundwater pollution to the sustainable development of human society has attracted widespread attention from governments and the public. Research on ground...

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Problems solved by technology

[0006] However, the functions of the existing simulation tanks are relatively simple and cannot fully meet the needs of the test. For example, the common seepage sand tanks and narrow slot tanks have small simulation scales, and the filling medium can only be coarse-grained aqueous media such as sand and gravel. It can only simulate one-dimensional and two-dimensional groundwater flow field and solute migration, but this simulation tank can simulate three-dimensional groundwater flow field and different ways of pollutants entering groundwater, and test various groundwater pollution remediation methods and online monitoring

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