Parameters Optimization of Modified A²O Process for Low Strength Municipal Wastewater Treatment

Author

Yin, Ming ; Li, Tian ; Yao, Haifeng ; Lu, Bin ; Ruan, Dakang

Author_Institution

State Key Lab. of Pollution Control & Resource Reuse, Tongji Univ., Shanghai, China

fYear

2009

fDate

11-13 June 2009

Firstpage

1

Lastpage

4

Abstract

A pilot-scale anaerobic-anoxic-oxic (A²O) bioreactor with 125 m³ldrd^-1 capacity was tested for treating real low strength municipal wastewater. The results showed that when the hydraulic retention time (HRT) was 9.6 h , the sludge retention time (SRT) was 15 d, the sludge recycling ratio (SRR) and mixed liquor recycling ratio (MLRR) were 0.5 and 1.5 respectively, the effluent could meet the first A order (China GB18918-2002) .It was suggested that the operational state could be well known according to the changes of DO & ORP on-line sensors.

Keywords

bioreactors; decontamination; sludge treatment; wastewater treatment; water pollution; bioreactor; hydraulic retention time; mixed liquor recycling ratio; modified A²O process; modified anaerobic-anoxic-oxic process; municipal wastewater treatment; parameter optimization; sludge recycling ratio; sludge retention time; time 15 d; time 9.6 h; Bioreactors; Biosensors; Effluents; Inductors; Nitrogen; Organisms; Recycling; Temperature sensors; Wastewater treatment; Water pollution;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-2901-1

Electronic_ISBN

978-1-4244-2902-8

Type

conf

DOI

10.1109/ICBBE.2009.5163170

Filename

5163170