TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Component: The sludge washing pool bottom has slope of 35-50 degrees with respect to organic sludge sedimentation tank. It has common end on partition wall of washing sludge outlet which is provided with grid. The grid has aperture of 1-3 cm. The organic sludge sedimentation tank and sludge dewatering machine are provided with sludge pipeline and sewage pipeline, which are connected to high concentration organic sludge storage pool and sewage processing system or sewage sedimentation tank. The sludge washing system also comprises garbage water pool for inorganic garbage that is not easy to decompose, and garbage water tank. The sludge washing pool bottom is provided with sludge pump and inorganic garbage pipeline connected with garbage water pool. The garbage water tank has bottom slope of 5-10 degrees . The sludge washing pool is provided with bottom sewage channel which is installed with metal grate for blocking passage of inorganic garbage clear sewage well. The sludge washing pool, organic sludge sedimentation tank, and high-concentration organic sludge storage tank are provided with sludge pump and pipeline mounting hole. Pipe and valve are installed on outer surface of tank body. The treatment system also comprises straw pre-processing system, preparing system, and anaerobic digestion system. The straw pre-processing system comprises high pressure tank and straw hydrolysis acidification reactor, mixing system comprising preparing tank, alkaline solution tank, high-concentration sludge washing system, organic matter sludge storage pool, steam tank provided in straw pre-processing system, alkaline solution inlet provided in alkaline solution pool, straw hydrolysis acidification reactor provided with curing straw feeding port, mud pump installation holes, biogas fertilizer tank, and inlet self-circulation pipeline. The bottom of straw hydrolysis acidification reactor is equipped with submersible type reamer crusher. The biogas fertilizer tank and self-circulating pump connected with filtering device self-circulation pipeline inlet preparing tank via pipeline. The preparation tank is connected with anaerobic digestion system through conveying device. The anaerobic digestion system comprises high temperature hydrolysis acidification reactor, high temperature methane producing reactor, super high temperature reactor, and methane production reactor. The high temperature methane producing reactor is provided with biogas fertilizer out mud pump. Each reactor is provided with alkaline solution, biogas fertilizer reflux pipeline inlet, sludge pump inlet, and outlet pipeline.