Metal finishers can recovers metals to reintroduce to the plating bath.
	Ethylene glycol (automotive antifreeze) can be reclaimed with membranes.  Multivalent salts, oils, suspended solids, and color are removed.  A clean ethylene glycol solution remains for reuse.
	Copper may be recovered from circuit board plating rinse streams.  Soluble copper sulfate is concentrated by membranes from rinse water.  The concentrate is then fed to a ion exchange unit that produces pure copper sulfate for reuse.  The purified rinse water is then reprocessed through the rinse tanks.
	Commercial laundry waste water is high in BOD, COD, detergents and surfactants.  A combination of membrane filters will remove oils, grease, TDS, TSS, detergents and surfactants.  The product recovered is a high quality water that may be reused, often times at an elevated temperature.
	Low molecular weight alcohols, primarily methanol and ethanol, are extensively used as solvents/cleaners in many industries.  Once these materials are contaminated they require costly treatment methods for reuse or must be disposed of.  Nano filtration provides an inexpensive means for on site purification for reuse.
	Quenchant recovery - In the heat treating of aluminum parts, quenching is accomplished with water soluble compounds such as polyalkalene glycol.  Rinsing of the aluminum parts dilutes the quenchant and the solution must be reconcentrated.  This is often done by heating the solution.  This causes the glycol to separate from the solution.  It is energy intensive and usually results in the loss of polyalkalene glycol and energy.  Ultrafiltration membranes can reconcentrate the quenchant solution while providing a significant cost savings.