Urban river sludge composting method

The invention discloses an urban river sludge composting method, which belongs to the technical field of sludge treatment, and comprises the following steps: S1, prefabricating a mixture; s2, prefabricating a coconut shell fiber-enzyme compound: soaking the coconut shell fiber mat in a biological enzyme mixed solution prepared from waste fruits and vegetables to obtain the coconut shell fiber-enzyme compound; s3, composting: taking the mixture and the coconut fiber-enzyme compound as raw materials, performing composting in a strip stacking type composting mode, stacking the mixture and the coconut fiber-enzyme compound at intervals, arranging an air delivery pipe every two layers of mixture, and delivering air into a pile body through an air blower to perform aerobic composting; in the composting process, the pile is turned once every 10 days, the temperature in the pile body is controlled to be 58-72 DEG C by adjusting the airflow speed, and the total composting time is 15-20 days. The compost is treated by