Patent ID: 8206581

Claim:
A high efficiency reverse osmosis system comprising: a tuned injector in fluid communication with a reverse osmosis membrane, including an injector housing, an injector nozzle, a mixing chamber and an injector throat; each of the nozzle and throat being separately insertable into an inlet and an outlet, respectively, of the interior housing; the injector housing including a first inlet to receive means for receiving a quantity of raw water supplied at an initial hydrostatic system pressure; the tuned injector to recirculate concentrate water received from a reverse osmosis membrane through a second inlet in the injector housing, opening into the mixing chamber utilizing only the initial hydrostatic system pressure, without the assistance of a pump or other pressure creating device; the tuned injector to blend in the mixing chamber the raw water and concentrate water in a defined mixing ratio to form a quantity of feed water in dependence on flow requirements of the reverse osmosis membrane and a permeate water production rate, wherein the defined mixing ratio is approximately three parts concentrate water to two parts raw water with one part discharged to waste, and one part permeate production from the reverse osmosis membrane outlet causing a five part concentrate to one part permeate flow within the reverse osmosis membrane as required to maintain the reverse osmosis membrane with 50% recovery of total water consumed; the injector throat to provide feed water from the mixing chamber to the reverse osmosis membrane without substantial reduction in the initial hydrostatic system pressure.