Changes in microbial community during hydrolyzed sludge reduction.

ABSTRACT: In this study, the effects of different enzymes (lysozyme, α-amylase and neutral protease) on sludge hydrolysis efficiency and microbial community in sequencing batch reactor (SBR) were introduced. The results showed that the hydrolysis efficiencies of the three enzymes were 48.5, 22.5 and 31%, respectively, compared with the accumulated sludge discharge of the blank control group. However, it has varying degrees of impact on the effluent quality, and the denitrification and phosphorus removal effect of the system deteriorates. The lysozyme that achieves the optimal sludge hydrolysis effect of 48.5% has the greatest impact on the chemical oxygen demand (COD), total nitrogen (TN), and nitrate nitrogen (NO₃^--N) of the effluent. The sludge samples of the control group an

SUBMITTER: Liu S 

PROVIDER: S-EPMC10502510 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature