Patent ID: 8211316

Claim:
A device for deep sewage treatment without sludge discharge comprising: functional tanks; multiple electric pumps; and multiple control valves for controlling the flow of a sewage stream and a water stream; the functional tanks further comprising: a primary clarifier ( 1 ) having a bar screen and a strainer ( 9 ); a primary sedimentation tank for neutralization ( 2 ), wherein the primary sedimentation tank for neutralization ( 2 ) and the said primary clarifier ( 1 ) are fluidly connected; an aeration tank ( 3 ), wherein the primary sedimentation tank for neutralization ( 2 ) and the aeration tank ( 3 ) are fluidly connected; an aerobic biological process tank ( 4 ), wherein the aeration tank ( 3 ) and the aerobic biological process tank ( 4 ) are fluidly connected; multiple anaerobic and sludge backflow tanks ( 5 ); the anaerobic and sludge backflow tanks ( 5 ) being fluidly connected to the aerobic biological process tank ( 4 ) and the aeration tank ( 3 ) respectively, wherein the fluid connection provides for sludge flow from the anaerobic and sludge backflow tanks ( 5 ) into the aerobic biological process tank ( 4 ) and the aeration tank ( 3 ) respectively; a sludge and clarified water separation tank ( 6 ) being fluidly connected the anaerobic and sludge backflow tanks ( 5 ), wherein the fluid connection provides for sludge stream flow back to the anaerobic and sludge backflow tanks ( 5 ); multiple separation tanks ( 7 ) being fluidly connected to the aerobic biological process tank ( 4 ) and the aeration tank ( 3 ) respectively wherein the fluid connection provides for sludge stream flow from multiple separation tanks ( 7 ) to the aerobic biological process tank ( 4 ) and the aeration tank ( 3 ) respectively; and multiple release tanks ( 8 ), being fluidly connected with the multiple separation tanks ( 7 ) and the aerobic biological process tank ( 4 ); the multiple release tanks ( 8 ) further being fluidly connected, to a discharge outlet, wherein the discharge outlet is for a treated and purified water stream; and a blaster for supplying oxygen, wherein each of the primary sedimentation tank for neutralization ( 2 ), the aeration tank ( 3 ), and the aerobic biological process tank ( 4 ) are provided with an air inlet ( 12 ) for the supply of oxygen.