Modularized simulation system for migration, diffusion and in-situ remediation of groundwater pollution

The utility model discloses a modularized simulation system for underground water pollution migration and diffusion and in-situ remediation. The modularized simulation system comprises a water inlet module, a pollution source release module, a sand box module, an injection well module and a water outlet module. The simulation system realizes simulation of a hydrodynamic field and a hydrochemical field through modular design and flexible application of assembly of each module, can be used for migration and transformation simulation experiments of pollutants in an aquifer under different conditions, analyzes solute migration and migration and transformation rules in the aquifer under different conditions, improves the trueness of the simulation experiments, and has good application prospects. The simulation experiment cost is reduced, a favorable experiment basis is provided for research of an underground water in-situ chemical oxidation/reduction remediation technology, an in-situ bioremediation technology and