Simulation device and method for soil collection and leaching solution collection of pollutants in soil column leaching

The invention discloses a simulation device and method for soil collection and leaching solution collection of pollutants in soil column leaching. The device comprises a support frame, a liquid storage tank, a peristaltic pump, a flow guide pipe, an embedded top end cover, leaching pipes, a water outlet valve and a sample receiving bottle, wherein the liquid storage tank, the peristaltic pump andeach soil layer leaching pipe are connected through peristaltic pump hoses; wherein each leaching pipe sequentially comprises a stagnant water layer leaching pipe, a water distribution layer, artificially prepared contaminated soil, a surface soil layer leaching pipe, a surface soil layer leaching pipe and a filtering soil layer, a middle soil layer leaching pipe and a filtering soil layer, a bottom soil layer leaching pipe and a filtering soil layer, a water outlet valve and a sample receiving bottle from top to bottom; soil sample sampling ports are respectively formed in the side surfaces of the surface soil layer