NOVELTY - A concentrated treatment system comprises an equalization basin, an upflow anaerobic reactor, a multi-layer aerobic activity filtering tower, a crop wetland system and a biogas collecting and using system. The equalization basin is arranged on the ground. The upflow anaerobic reactor, multi-layer aerobic activity filtering tower, and crop wetland system are gradually reduced on height. The equalization basin is connected to the sewage discharge port via the sewage pipe.    USE - Concentrated treatment system for rural sewage.    ADVANTAGE - The system is energy saving and environment friendly; the agriculture and forestry output value is increased; the structure is simple, the installation and the operation is convenient; the peasant burden can be reduced; the floor space is reduced; and the pollution problem of rural sewage can be solved.    DETAILED DESCRIPTION - A concentrated treatment system comprises an equalization basin, an upflow anaerobic reactor, a multi-layer aerobic activity filtering tower, a crop wetland system and a biogas collecting and using system. The equalization basin is arranged on the ground. The upflow anaerobic reactor, multi-layer aerobic activity filtering tower, and crop wetland system are gradually reduced on height. The equalization basin is connected to the sewage discharge port via the sewage pipe. The equalization basin is connected to the upflow anaerobic reactor via the sewage pipe and there is a water pump between two parts. The upflow anaerobic reactor is connected with the multi-layer aerobic activity filtering tower via the sewage pipe. The multi-layer aerobic activity filtering tower is connected to the crop wetland system via the sewage pipe. The upflow anaerobic reactor and multi-layer aerobic activity filtering tower are connected to the crop wetland system via the sewage pipe. The upflow anaerobic reactor is connected to the biogas collecting and using system via the biogas pipe.    DESCRIPTION OF DRAWING(S) - The drawing is a block diagram of concentrated treatment system (Drawing includes non-English language text).