Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic (A(2)/O)-biological aerated filter (BAF) system

Chen, Yongzhi, Peng, Chengyao, Wang, Jianhua, Ye, Liu, Zhang, Liangchang and Peng, Yongzhen (2011) Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic (A(2)/O)-biological aerated filter (BAF) system. Bioresource Technology, 102 10: 5722-5727. doi:10.1016/j.biortech.2011.02.114


Author Chen, Yongzhi
Peng, Chengyao
Wang, Jianhua
Ye, Liu
Zhang, Liangchang
Peng, Yongzhen
Title Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic (A(2)/O)-biological aerated filter (BAF) system
Formatted title
Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic (A2/O)-biological aerated filter (BAF) system
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0144-4565
0167-5826
0960-8524
1873-2976
Publication date 2011-05-01
Sub-type Article (original research)
DOI 10.1016/j.biortech.2011.02.114
Open Access Status DOI
Volume 102
Issue 10
Start page 5722
End page 5727
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
A novel system integrating anaerobic/anoxic/oxic (A2/O) and biological aerated filter (BAF), which could solve the sludge retention time (SRT) conflicting problem between nitrifiers and polyphosphate accumulating organisms (PAOs) by shortening SRT for PAOs in A2/O and lengthening SRT for nitrifiers in BAF, was investigated in this study. Various nitrate recycling ratios (100%, 200%, 300% and 400%) were applied to a lab-scaled A2/O-BAF system to detect the simultaneous biological nitrogen and phosphorus removal performance while treating real domestic wastewater with low carbon to nitrogen (C/N) ratio. The concentrations of chemical oxygen demand (COD), NH+4–N and total phosphorus (TP) in the effluent were less than 50.0, 0.5 and 0.5 mg/L, respectively, throughout the experiments. The removal efficiencies of total nitrogen (TN) were 64.9%, 77.0%, 82.0% and 87.0%, under respective nitrate recycling ratios (increasing from 100% to 400%). By contrast, nitrate recycling ratios had neglectable effect on the removal efficiencies of COD and NH+4–N.
Keyword A(2)/O-BAF system
Nitrate recycling ratio
Simultaneous biological nitrogen and phosphorus removal
Denitrifying phosphorus removal
Low C/N ratio domestic wastewater
Denitrifying phosphorus removal
Activated-sludge systems
Waste-water
A(2)O process
Nitrogen removal
Assay
Flow
A2/O-BAF system
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
Advanced Water Management Centre Publications
 
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Created: Fri, 10 Feb 2012, 22:48:07 EST by Hong Lee on behalf of Advanced Water Management Centre