NOVELTY - A sewage processing system has an outlet system connected to a sewage separating high concentration system. An outlet water tank and a sewage processing system are connected to an inlet of an anaerobic digestion system. The digestion system comprises a secondary anaerobic digesting pool and a slag water pool. An outlet of a gas boiler and a gas generator are connected with an inlet of a heat exchanger. An outlet of the exchanger is connected with a tail gas absorbing device. A mixing tank is connected with the exchanger, and a water source heat pump comprises an inlet and an outlet.    USE - Sewage processing system. Uses include but are not limited to municipal sewage, town cell sewage, cultivating sewage and industrial sewage.    ADVANTAGE - The system purifies the sewage, recovers energy and valuable substance, and has high working efficiency.    DETAILED DESCRIPTION - A sewage processing system has an outlet system connected to a sewage separating high concentration system. An outlet water tank and a sewage processing system are connected to an inlet of an anaerobic digestion system. The anaerobic digestion system comprises a secondary anaerobic digesting pool and a slag water pool. A liquid compound fertilizer manufacturing system comprises a safety second filter, a film filter, a film concentrator and a mixing pool. A cartridge filter is connected with an inlet of an anaerobic digestion tank, and a security filter of an outlet is connected with the inlet. An air pollution control system comprises a tail gas absorbing device, and a desulfurizing dehydrating device is connected with a primary anaerobic digestion device. An energy recycling system comprises a gas boiler, a biogas generator, a heat exchanger, a hot water tank, a water source heat pump and a cold water tank. Inlets of the gas boiler and the biogas generator are respectively connected with the outlet and a dehydrating device. An outlet of the gas boiler and a gas generator are connected with an inlet of the heat exchanger. An outlet of the heat exchanger is connected with a tail gas absorbing device. A mixing tank is connected with the heat exchanger, and a water source heat pump comprises an inlet and an outlet.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a sewage processing system.'(Drawing includes non-English language text)'