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http://dx.doi.org/10.5322/JES.2005.14.9.861

A Simultaneous Removal of Organic, Nitrogen and Phosphorus According to the Distribution of Aeration Time in (AO)2 SBBR  

Park Young-Seek (Department of Health & Environment, Daegu University)
Kim Dong-Seog (Department of Environmental Science, Catholic University of Daegu)
Publication Information
Journal of Environmental Science International / v.14, no.9, 2005 , pp. 861-871 More about this Journal
Abstract
This study was carried out to get more operational characteristics of Anoxic(anaerobic)-Oxic-Anoxic-Oxic $(AO)_2$ sequencing batch biofilm reactors (SBBRs) at the low TOC concentration, The operating time in anoxic (anaerobic) time to oxic time was I : I. Experiments were conducted to find the effects of the aeration time distribution on the organic matters and nutrients removal. Three lab-scale reactors were fed with synthetic wastewater based on glucose as carbon source. During studies, the operation mode was fixed. The first aeration time to the second aeration time in SBBR-I was 2 : 3, and those in SBBR-2 and SBBR-3 were I : 4 and 3 : 2, respectively. The organic removal efficiency didn't show large difference among three reactors of different aeration time distribution. However, from these study results, the optimum aeration time distribution in the first and the second aeration time for biological nutrient removal was shown as 3 : 2. The release of phosphorus was inhibited at the second non-aeration period because of the low TOC concentration and the nitrate produced by the nitrification at the first aeration period.
Keywords
(AO)2 SBBR; Aeration time; EBPR; DO; PH;
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