Small column test device for indoor PRB technology simulation

Abstract

The invention discloses a small column test device for indoor PRB technology simulation. The device comprises at least one group of a top pipe (1), a bottom pipe (2) and a medium pipe (3), wherein themedium pipe (3) is located between the bottom pipe (2) and the top pipe (1) and connected with the bottom pipe (2) and the top pipe (1) through rotary buckles in a sealed mode, the bottom pipe (2) isconnected with a water inlet pipe through a filtering connector (6), and the top pipe (1) is connected with a water outlet pipe through the filtering connector (6). According to the invention, the filling of a remediation medium and the surrounding soil can be achieved, so the filling difficulty of the soil and the remediation medium is reduced, the use amount of the remediation medium and the filling compactness can be better controlled, the later device cleaning and material replacement are more convenient, and the test efficiency is improved.

Description

technical field [0001] The invention relates to a small column test device for indoor simulation of permeable reactive wall technology (PRB technology), which belongs to the technical field of environmental engineering research. Background technique [0002] The 2018 Bulletin on the State of the Ecological Environment in China pointed out that the water quality of 2,833 shallow groundwater monitoring wells across the country is generally poor. Groundwater environmental pollution is characterized by complexity, concealment, and long-term hazards, and its pollution can last for decades or even hundreds of years. Toxic and harmful substances in polluted groundwater will cause serious pollution and damage to the surrounding and adjacent surface and groundwater. In order to control or further remediate polluted groundwater, PRB technology has developed rapidly and has become an important in-situ remediation technology for groundwater. In the research process of PRB technology, ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the patent publication number is CN206609662U, which discloses a highly efficient column test device. This common integrated design simulation test column mixes the surrounding underground soil and repair medium in a columnar container, and the tubes at both ends enter and exit the solution. , according to this method, it is not convenient to separate the restoration medium from the surrounding soil, and the test results are affected by the material of the device, the density of the restoration medium, etc.

Images