The strain is introduced into domestic and foreign biotechnology research and development of bacteria, mainly through the microbial flocculant production of bacteria metabolites mucopolysaccharide, protein, lactic acid and other bioflocculants to improve the flocculation of sludge, effectively maintaining the sludge settling ratio , To prevent the loss of bacteria, while increasing COD, ammonia, toxic and hazardous substances, TP removal rate, which can effectively shorten the system start-up time, improve system stability and impact resistance, while effectively ensuring the stable operation of the system.