化工学报2016，Vol.67Issue(10)：4439-4445,7.DOI:10.11949/j.issn.0438-1157.20160110
污泥转移SBR工艺中EPS对生物除磷的作用
Effect of EPS on biological phosphorus removal in sludge shifting SBR process
摘要
Abstract
An updated enhanced biological phosphorus removal-sludge shifting SBR process was used for the treatment of synthetic wastewater. The role of extracellular polymeric substances (EPS) in the enhanced phosphorus removal process was investigated. As the sludge reflux ratios (characterized by sludge shifting volumes) was set as 0 , 15% and 30%, the content of EPS in the sludge was (108.14±9.68) mg·(g MLSS)−1, (128.17±1.45) mg·(g MLSS)−1 and (123.35±22.98) mg·(g MLSS)−1, respectively. The total phosphorus removal efficiency in sludge (by sludge adsorption) was 82.14%±0.85%, 96.35%±1.25% and 98.99%±0.98%, respectively. Accordingly, the TP concentrations in the EPS at the end of the process accounted for 27.9%±2.55%, 57.23%±2.33% and 63.88%±2.87% of the TP concentrations in the sludge, respectively. In addition, the adsorption of phosphorus by EPS was (2.04±0.32) mg·(g MLSS)−1, (5.90±0.38) mg·(g MLSS)−1 and (6.00±0.52) mg·(g MLSS)−1, respectively, during the aerobic phosphorus adsorption process. In all the above cases, the EPS has contributed more than 90% of the phosphorus adsorption capacity of the sludge. The results indicated that in sludge shifting SBR process, the increase of the amount of sludge shifting improved phosphorus content in the EPS and corresponding phosphorus removal, showing that EPS played a major role in the phosphorus removal process. But sludge shifting had almost no impact on EPS content in the sludge.关键词
污泥转移SBR工艺/胞外聚合物/生物除磷/废水/吸附/回收Key words
sludge shifting SBR process/EPS/biological phosphorus removal/wastewater/adsorption/recovery分类
资源环境引用本文复制引用
周晓华,潘杨,陈茜茜,邓猛,郑莹,夏健伟..污泥转移SBR工艺中EPS对生物除磷的作用[J].化工学报,2016,67(10):4439-4445,7.基金项目
江苏省高校自然科学研究重大项目（14KJA610001）；江苏省“333”学术带头人培养工程资助项目（331491201）；江苏省优势学科资助项目；水处理材料与技术协同创新中心资助。 （）
