This product is the introduction of domestic and foreign biotechnology research and development of bacteriological agents, special strains of bacteria for the treatment of sludge in the river mainly using immobilized microbial technology - a variety of efficient microorganisms fixed in the zeolite carrier with a huge specific surface area, the use of sinking to the bottom of the river, effective degradation of sludge, and at the same time, immobilized micro-organisms can be slowly released, reducing the amount of product use, increasing its treatment effect, is the best product for the biodegradation of urban black smelly water and sludge.