Dynamic pressure-bearing device for simulating reaction process of PRB medium in deep groundwater

Abstract

The invention discloses a dynamic pressure-bearing device for simulating the reaction process of a PRB medium in deep groundwater, the dynamic pressure-bearing device comprises a water delivery pressurization system, a medium reaction and sampling system and a wastewater recovery and storage system, and the water delivery pressurization system is formed by connecting a water storage tank, a booster pump, a check valve, a pressure reducing valve and a pressure-bearing pipeline; the medium reaction and sampling system consists of a pressure-bearing column, six reaction columns and six groups of decompression drainage devices; the pressure reducing drainage device is formed by connecting a pressure reducing valve and a ball valve; and the wastewater recovery and storage system consists of a wastewater temporary storage pool, a water suction pump, a water level controller and a wastewater storage pool. The device has the advantages of being simple, stable and detachable, a user can appropriately increase or reduce the number of the reaction columns and the number of the pressure reduction drainage devices according to the number of types of media needing to be simulated, and simulation of the reaction process of six PRB media and pollutants can be achieved at most at a time.

Description

technical field [0001] The invention relates to a test device, in particular to a dynamic pressure bearing device for simulating the reaction process of PRB medium in deep groundwater, which is suitable for simulating the reaction process of PRB medium and pollutants in tens of meters deep groundwater and pressurized water layers. Background technique [0002] Nowadays, the problem of environmental pollution is becoming more and more serious. Surface pollutants gradually migrate vertically to the saturated water zone through osmosis, and even enter the confined water layer, seriously threatening the ecology and drinking water safety. Because groundwater pollution has the characteristics of concealment, complex chemical composition, variable hydraulic characteristics, and high treatment costs, the pollution problems of saturated water zone and confined water pollution need to be solved urgently. The permeable reactive wall (PRB) technology is a convenient, low-cost, and eco-f...

AI Technical Summary

Problems solved by technology

The existing commonly used high-pressure reaction vessels are mostly in a closed state, and there is no inflow and outflow of substances during the entire reaction process. If sampling and monitoring are required during the reaction process, the high-pressure environment and chemical reaction state of the reactor will inevitably be broken, resulting in system failure. stable

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