Exemplary systems and techniques for treating contaminated water are
described. In one instance a plant or system includes a membrane
filtration mechanism operable to receive an influent water stream
containing a contaminant and to separate at least a first portion of the
contaminant from a resulting first effluent water stream. The system also
includes a reactive filtration mechanism operable to receive the first
effluent water stream and to remove a waste stream containing a second
portion of the contaminant to produce a resultant second effluent stream.