Patent ID: 7285212

Claim:
A rotating membrane ultrafilter to remove liquid from wastewater, comprising: a housing having a wastewater inlet and outlet; a plurality of tubular membranes rotating within the housing, each tubular membrane having an interior; and a drive assembly to rotate the plurality of tubular membranes within the housing, the drive assembly having a plurality of hollow shafts, each shaft having one end in fluid communication with a permeate outlet and another end of each shaft connected to and in fluid communication with one of the interiors of the plurality of tubular membranes to connect the interior of said membrane with the permeate outlet, whereby wastewater enters the wastewater inlet and travels around the plurality of tubular membranes, liquid permeating through to the interior of the plurality of tubular membranes and out the permeate outlet, the remaining wastewater exiting the outlet of the housing.