TECHNOLOGY FOCUS - INSTRUMENTATION AND TESTING - Preferred Components: The water outlet on the bottom of the water storage tank is connected with the water inlet on top of the raw material adjusting tank. A digestion liquid transmitting pump is formed between the digestion liquid outlet on the bottom of the digestion liquid storage tank and the digestion liquid inlet on top of the raw material adjusting tank. The discharge port on the middle lower part of the heating hydrolysis tank is connected with the feed port on the middle upper part of the middle temperature anaerobic digestion reactor by a material lifting pump. The sludge outlet on the bottom of the deposition tank is connected with the raw material inlet of the solid-liquid separator by a sludge discharging pump. The discharge outlet on top of the raw material adjusting tank is higher than the discharge inlet on the top of the heating hydrolysis tank. The discharge port on top of the middle temperature anaerobic digestion reactor is higher than the feed port of the super high temperature forced hydrolysis reactor and the discharge port on top of the high temperature anaerobic digestion reactor is higher than the feed port on the top of the deposition tank. The digestion liquid outlet on the top of the deposition tank is higher than the digestion liquid inlet on the top of the digestion liquid storage tank and the solid-liquid separator is higher than the digestion liquid inlet on the top of the digestion liquid storage tank. The raw material adjusting tank, the middle temperature anaerobic digestion reactor and the high temperature anaerobic digestion reactor are provided with mechanical mixers. The heating hydrolysis tank is provided with a center transmission concentration sludge scraping machine. The bottom parts of the raw material adjusting tank, heating hydrolysis tank, the middle temperature anaerobic digestion reactor and the high temperature anaerobic digestion reactor are connected with sand discharging pumps. The middle temperature anaerobic digestion reactor and the high temperature anaerobic digestion reactor are provided with material circulating pumps and the heating hydrolysis tank, the middle temperature anaerobic digestion reactor, the super high temperature forced hydrolysis reactor and the high temperature anaerobic digestion reactor are provided with a thermometer, a heating system and a heat preserving layer. The middle temperature anaerobic digestion reactor and the high temperature anaerobic digestion reactor are provided with an acid degree gauge, a pressure gauge and a safety valve. The top parts of the middle temperature anaerobic digestion reactor, high temperature anaerobic digestion reactor and the deposition tank are provided with biogas discharging ports which are provided with gas flow meters and the super high temperature forced hydrolysis reactor is provided with a gas outlet.