富磷剩余污泥厌氧贮存过程中的释磷规律与计量关系  

Phosphate release and metrology during anaerobic fermentation of phosphorus-rich excess sludge

作　　者：毕东苏[1] 郑广宏[2] 

机构地区：[1]上海应用技术学院土木建筑与安全工程学院,上海200235 [2]同济大学环境科学与工程学院,上海200092

出　　处：《环境科学学报》2008年第10期2024-2028,共5页Acta Scientiae Circumstantiae

基　　金：上海市教育委员会重点学科建设项目资助(No.J51502);上海市教委优秀青年教师培养专项基金(No.YYY-07009);上海应用技术学院高层次人才启动基金(No.YJ2006-26)~~

摘　　要：以某采用A/O生物除磷工艺的水质净化厂排出的富磷剩余污泥为研究对象,利用18个棕色消化瓶考察了剩余污泥厌氧发酵过程中P-PO34-的释放规律;定期测试污泥中TCOD、SCOD、TSS、VSS、PHB等指标,讨论了上清液中P-PO43-浓度与各指标的变化计量关系.结果表明,发酵过程中P-PO34-释放随VSS、TCOD呈负相关关系,与SCOD、PHB以及N-NH4+呈正相关关系.计量关系表明,富磷污泥释放P-PO43-至上清液的同时,PHB指标的变化与活性污泥系统中的厌氧释磷过程有相似之处,认为剩余污泥厌氧释磷过程有活性污泥厌氧释磷的痕迹,但机理更为复杂.The phosphate release process under anaerobic conditions was investigated with 18 anaerobic reactors. The phosphorus-rich excess sludge was obtained from a sewage treatment plant in which the A/O process （an enhanced biological phosphorus removal process） was used. In order to discuss the factors and mechanism affecting phosphate release, a series of indicators of sludge properties such as TCOD, SCOD, TSS, VSS and poly-β- hydroxybutyrate content （PHB） were monitored. The results indicated that the concentration of P·PO4^3- - increased throughout the course of the study and was negatively correlated with the concentrations of VSS and TCOD, but positively correlated with the concentrations of SCOD, PHB, and N-NH4＋ . According to metrology relationships, although the phosphate release mechanics are different, the PHB content in the phosphate-rich excess sludge changes in ways similar to the PHB in activated sludge. Therefore the mechanism of phosphate release from phosphate-rich excess sludge may be similar to that of activated sludge.

关 键 词：富磷剩余污泥 厌氧发酵 磷的释放 计量关系 

分 类 号：X703[环境科学与工程—环境工程]