Cleanable filter media and filters are provided that are formed from extruded reticular materials, such as nettings, meshes, mattings, apertured films, apertured sheets and the like. A cleanable filter media comprises a first layer comprising an extruded reticular structure and a second layer in contact with the first layer and comprising an extruded reticular structure. The first and second layers may include holes, perforations or apertures that are misaligned with each other. The reticular structures may comprise an apertured polymer film or a netting. One or more of the layers may be electrically charged and/or may comprise charge additives or charge control agents. One or more of the layers may include a silicon-based coating. The cleanable filter media are less expensive to manufacture than conventional cleanable filter media and may have equivalent or improved performance characteristics.

Cleanable filter media and filters are provided that are formed from extruded reticular materials, such as nettings, meshes, mattings, apertured films, apertured sheets and the like. A cleanable filter media comprises a first layer comprising an extruded reticular structure and a second layer in contact with the first layer and comprising an extruded reticular structure. The first and second layers may include holes, perforations or apertures that are misaligned with each other. The reticular structures may comprise an apertured polymer film or a netting. One or more of the layers may be electrically charged and/or may comprise charge additives or charge control agents. One or more of the layers may include a silicon-based coating. The cleanable filter media are less expensive to manufacture than conventional cleanable filter media and may have equivalent or improved performance characteristics.

A cleaning apparatus for cleaning electronic substrates includes a rinse module having a rinse station configured to perform a rinse of electronic substrates and a rinse tank in fluid communication with the rinse station and configured to receive effluent from the rinse station. The cleaning apparatus further includes an effluent management and filtration system in fluid communication with the rinse tank. The effluent management and filtration system includes a pump in fluid communication with the rinse tank, the pump being configured to pump effluent from the rinse tank, a first filter in fluid communication with the pump, the first filter being configured to remove larger particles from the effluent, and a second filter in fluid communication with the first filter and the rinse tank, the second filter being configured to break down organics matter from the effluent.

A cleaning apparatus for cleaning electronic substrates includes a rinse module having a rinse station configured to perform a rinse of electronic substrates and a rinse tank in fluid communication with the rinse station and configured to receive effluent from the rinse station. The cleaning apparatus further includes an effluent management and filtration system in fluid communication with the rinse tank. The effluent management and filtration system includes a pump in fluid communication with the rinse tank, the pump being configured to pump effluent from the rinse tank, a first filter in fluid communication with the pump, the first filter being configured to remove larger particles from the effluent, and a second filter in fluid communication with the first filter and the rinse tank, the second filter being configured to break down organics matter from the effluent.

A method of cleaning a fouled reverse osmosis (RO) membrane using a comb-shaped polymer which includes dissolving the comb-shaped polymer and a base in water to form a solution, contacting the fouled RO membrane with the solution to produce a cleaned RO membrane. The comb-shaped polymer includes reacted units of poly(isobutylene-alt-maleic anhydride) and an oligoethylene amine where, the oligoethylene amine is triethylenetetramine, tetraethylene pentaamine, or pentaethylenehexamine.

A method of cleaning a fouled reverse osmosis (RO) membrane using a comb-shaped polymer which includes dissolving the comb-shaped polymer and a base in water to form a solution, contacting the fouled RO membrane with the solution to produce a cleaned RO membrane. The comb-shaped polymer includes reacted units of poly(isobutylene-alt-maleic anhydride) and an oligoethylene amine where, the oligoethylene amine is triethylenetetramine, tetraethylene pentaamine, or pentaethylenehexamine.