Authors: Jinwoo Cho KyungGuen Song KyuHong Ahn
Publish Date: 2008/12/02
Volume: 32, Issue: 5, Pages: 593-602
Abstract
This study investigated the contribution of microfiltration to phosphorus removal in the sequencing anoxic/anaerobic membrane bioreactor The phosphorus content in activated sludge was fractionated by the Schmidt–Thannhauser–Schneider method The size distribution of phosphorus in the influent was analyzed to estimate the portion of particulate phosphorus rejected physically by the 02 μm microfiltration The result was that along with the high removal of phosphorus 83 the phosphorus content of activated sludge was measured as 5866 mgP/gVSS corresponding to 587 on dry weight basis About 9 of total phosphorus was chemically precipitated phosphates while 56 was stored inside the microbial cell by activity of PAOs and 35 was the sum of minor intracellular compositions and the particulate residuals which could be rejected completely by the microfiltration The biological activity is the dominant way of phosphorus removal in the process However the microfiltration also contributed significantly to phosphorus removal by retaining the particulate phosphorus inside the system
Keywords: