TECHNOLOGY FOCUS - ENVIRONMENT - Preferred Method: The method involves firstly adjusting water content of different sludge, naturally drying the different types of sludge, reducing water content of the sludge from 90% to 60-70%, adjusting pH of the sludge, maintaining pH of the sludge from urban sewage treatment plant and beer wastewater treatment plant at 8.5-9, maintaining pH of the furfural residues at 1 or less, mixing the sludge from the urban sewage treatment plant and beer wastewater treatment plant with the furfural residue in a mass ratio of 40-50:1, and maintaining pH of obtained mixed sludge at 6-7.5, where ratio of carbon to nitrogen in sludge from the beer wastewater treatment plant is adjusted at 51-56:1, and sludge from the urban sewage treatment plant is adjusted at 5-8:1, both the sludge from the urban sewage treatment plant and beer wastewater treatment plant is mixed in a ratio of 2-3:1, carbon to nitrogen ratio of the furfural residue is maintained at 80:1 and carbon to nitrogen ratio of the mixed material is maintained at 25-35:1. The method involves adding the mixed material into fermentation tank, recording the oxygen concentration and temperature every 3-5 hours, measuring pH and water content every 12 hours, opening the air blower to supply oxygen to the stacked compost piles when the oxygen concentration is 10% or less, stopping supply of oxygen when the oxygen concentration reaches close to 20%, opening the air blower to provide ventilation inside the fermentation tank when temperature of the stacked compost pile is 75 degrees C or more, stopping ventilation process when the temperature reaches 60 degrees C or less, allowing the compost pile to stand for 4-7 days, opening valve of the water tank when pH of the stacked compost pile is increased to 8-9 and water content is decreased to 35-45%, reducing pH of the stacked compost to 6-7.5 by spraying process, simultaneously increasing the water content to 50-55%, maintaining temperature and the oxygen concentration of the compost through the air blower for 5-10 days, maintaining the temperature and the oxygen concentration above the predetermined range for 10-15 days and allowing natural maturity of the compost without regulating various parameters of the compost. Preferred Composition: The content of organic matter in the compost material is 53-65%. The content of total nutrient chosen from nitrogen, phosphorus and potassium (NPK) based on dry weight of the compost material is 12.7-13.5%. The total NPK nutrient comprises nitrogen, phosphorus pentoxide and potassium oxide per 100 g of dry compost material. Preferred Component: The fermentation tank is semi-underground aerobic fermentation tank, where the underground portion is 0.3 m, ground portion of the tank is 1.2 m, and the fermentation tank is made of bricks and cement. The length of the fermentation tank is 3 m, width is 1.5 m and height is 1.5 m. The position being 0.3 m away from bottom portion of the fermentation tank is formed with baffle plate having four holes, where each hole is connected with gas distribution pipe for preventing blocking of the gas distribution pipe and exterior portion is being coated with layer of non-woven fabrics. The air blower provides oxygen for stacked compost piles through the gas distribution pipes.