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A novel approach to treat combined domestic wastewater and excess sludge in MBR

A novel approach to treat combined domestic wastewater and excess sludge in MBR

Authors :
Sheng-Bing, He
Bao-Zhen, Wang
Lin, Wang
Yi-Feng, Jiang
Li-Qiu, Zhang
Source :
Journal of environmental sciences (China). 15(5)
Publication Year :
2003

Abstract

Domestic wastewater was treated by combined anaerobic biofilm-aerobic membrane bioreactor(MBR) process, and part biomass MBR was withdrawn to treat with ozone, then the ozonated sludge was returned to anaerobic inlet. In aerobic MBR, MISS and DO were controlled at 3000-3500 mg/L and 0.8 mg/L respectively. Comparing the experimental results of two stages, it was noticed that ozonation did not affect the removal efficiency for organics but had a significant influence on the removals of NH3-N and TN. During the ozonation period of two months, no excess sludge was wasted, and a zero sludge yield was obtained.

Details

ISSN :
10010742
Volume :
15
Issue :
5
Database :
OpenAIRE
Journal :
Journal of environmental sciences (China)
Accession number :
edsair.pmid..........21bb7a1ae829210bc3a998ca2ba043e0