TY - JOUR ID - 72525 TI - Phosphorus Removal from Dairy Wastewater in Batch Systems under Simultaneous Aerobic/Anaerobic Conditions: Application of Response Surface Methodology JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Amini, Malihe AD - Environment, Jiroft University Y1 - 2015 PY - 2015 VL - 28 IS - 6 SP - 855 EP - 863 KW - Keywords phosphors removal percentage KW - dairy wastewater treatment KW - batch systems KW - RSM کلمات کلیدی درصد حذف فسفر،  DO - N2 - The objective of this paper is simultaneous of aerobic and anaerobic process for phosphorus removal from a dairy wastewater. The system consists of a granular sequencing batch reactor (SBR) working under alternating aerobic/anaerobic conditions. In order to analyze the process, four significant variables viz. MLSS, COD/N ratio, aeration time and cycling time and four dependent parameters as the process responses were studied using a central composite design (CCD) under response surface methodology (RSM). The percentage removal of PO43- and amount of SVI, MLSS, MLVSS, in batch runs were 98.34%, 44.03 ml/g, 5646.97 mg/l and 4435.99 mg/l, respectively. This study shows that the high removal of phosphors from dairy wastewater with microbial granules cultivated under the alternating aerobic–anaerobic conditions has been achieved successfully in batch systems. UR - https://www.ije.ir/article_72525.html L1 - https://www.ije.ir/article_72525_71aa37e6dca1232683140cd435bc1216.pdf ER -