Patent ID: 7399419

Claim:
A filter system comprising: a set of modules stacked on top of each other, each module including screen assemblies and filter media sandwiched between the screen assemblies; fluid lines communicating flow selectively to the individual modules; and a plurality of control assemblies associated with each module, each of the control assemblies including at least one external valve and being in fluid communication with a corresponding module to control flow through the corresponding module, the fluid lines and the control assemblies operable for selectively controlling fluid in each module through: a forward flow through a series of modules, the forward flow passing through the screen assemblies in one module then continuing to a subsequent module to treat an influent flow, a bypass flow to selectively bypass at least one of the modules, the forward flow from a module being bypassed around at least one subsequent module in the series of modules and the bypass flow being reintroduced in a subsequent module, and a reverse flow provided through a bypassed module.