Title :
Comparative Study on Sludge Production in SBBR System Under OSA Operational Process
Author :
Yao, Meng ; Li, Ye ; Zhang, Zhao-ji ; Wang, Si-xuan
Author_Institution :
Sch. of Resource & Environ. Eng., Wuhan Univ. of Technol., Wuhan
Abstract :
Two metabolic uncoupling processes of sequencing batch bifilm reactor (SBBR) and conventional activate system (CAS) were carried out under consecutive aerobic-setting-anaerobic (OSA) operational process at the SRT of 70 days. The yield and characteristics of sludge and wastewater treatment effects in the two reactors were analyzed in parallel. And the sludge observed yield coefficient (Yobs) were 0.0932 kgCOD/kgMLSS and 0.248 kgCOD/kgMLSS respectively. The maximal minus sludge production reached -0.244 kgCOD/kgMLSS for the grazing effect of metazoan in SBBR. The excess sludge yield was correlated with the metazoan growth status, and the breeding of metazoan would accelerate flocculation capability of bacteria and improve the performance of the sludge sedimentation apparently. The metabolism of metazoan would not influence the nitrification processes of wastewater treatment and the TN of effluent wouldn´t increase. While due to the carbon source shortage of nitration, the reaction of metabolic uncoupling and the grazing of metazoan deduced the releasing of phosphate obviously.
Keywords :
batch processing (industrial); biochemistry; bioreactors; effluents; flocculation; microorganisms; sedimentation; sludge treatment; wastewater treatment; SBBR system; bacteria; carbon source shortage; consecutive aerobic-setting-anaerobic operational process; conventional activate system; effluent; flocculation capability; grazing effect; metabolic uncoupling reaction; metazoan breeding; metazoan growth status; metazoan metabolism; nitrification processes; sequencing batch bifilm reactor; sludge production; sludge sedimentation; sludge treatment effects; time 70 day; wastewater treatment effects; yield coefficient; Batch production systems; Content addressable storage; Effluents; Inductors; Microorganisms; Organisms; Production systems; Sewage treatment; Sludge treatment; Wastewater treatment;
Conference_Titel :
Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1747-6
Electronic_ISBN :
978-1-4244-1748-3
DOI :
10.1109/ICBBE.2008.346
