A computer program product for controlling a PFAS (Per-Poly-fluorinated alkyl substances) effluent liquid treatment system, which includes a pump to pump a liquid received via an intake, a sediment filter to filter sediment from the liquid, a granular activated carbon (GAC) device, disposed downstream of the sediment filter, to remove organic contaminants from the liquid, one or more ion exchange resin columns, disposed downstream of the GAC device, to remove PFAS constituents from the liquid, and a plurality of control valves, the computer program product embodied on a non-transitory tangible computer readable medium, comprising:
- computer-executable code for controlling the plurality of control valves to direct the liquid to flow along one or more liquid flow paths through the one or more ion exchange resin columns so as to adjust a rate of processing the liquid by the one or more ion exchange resin columns.