甲醇和乙醇对SBR单级好氧生物除磷的影响研究  

Effects of methanol and ethanol on biological phosphorus removal in sequencing batch reactor with single-stage oxic process

作　　者：邓莹[1] 王冬波[1] 李小明[1,2] 杨帆[1] 杨麒[1] 莫创荣[2] 曾光明[1] 

机构地区：[1]湖南大学环境科学与工程学院,国家环境生物技术重点实验室,湖南长沙410082 [2]广西大学环境学院,广西南宁530004

出　　处：《中国环境科学》2011年第8期1268-1273,共6页China Environmental Science

基　　金：国家自然科学基金资助项目(51078128);湖南省研究生科研创新项目(CX2009B079)

摘　　要：分别以甲醇(SBR1#)和乙醇(SBR2#)作为碳源,研究了其对单级好氧生物除磷的影响.结果表明,稳定运行条件下,SBR1#磷的平均去除量为6.56mg/L,平均去除率为52.63%.SBR2#中磷的平均去除量为11.22mg/L,去除率为90.34%.SBR1#和SBR2#一个周期运行中好氧吸磷速率分别为1.62mg/(g·h)(以PO43--P计)和5.31mg/(g·h)(以PO43--P计),其中SBR2#出水磷的浓度低于检出限,SBR2#的储能物质总累积量比SBR1#多.相比之下,乙醇是作为除磷碳源效果较好.静置期,由于SBR2#中聚磷菌生物活性较SBR1#高,代谢旺盛,其释磷量高于SBR1#.The research carried out methanol（for SBR1#） and ethanol（for SBR2#） as the sole carbon source,and investigated the effects of them on the efficiencies of biological phosphorus removal in the single-stage oxic process,respectively.The results showed that the average phosphorus removal contents and its efficiencies respectively reached at 6.56 mg/L,52.63% in SBR1^# and 11.22mg/L,90.34% in SBR2^# during the steady-state operation.For a typical SBR cycle,within aerobic period,the phosphate uptake rates could reach 1.62 and 5.31mgPO43^——P/（gVSS×h） in SBR1^# and SBR2^#,respectively.In addition,the effluent phosphate concentration in SBR2^# was below the detection limit.And the internal storage compounds were higher in SBR2# than that in SBR1^# during a cycle.The results suggested ethanol as a carbon source seemed to be better for biological phosphorus removal in biological phosphorus removal system.During the idle period,more phosphorus was found to be released in SBR2^# than that in SBR1^# as more poly-p was degraded,due to the higher activity of PAOs in SBR2^#.

关 键 词：SBR 单级好氧工艺 生物除磷 乙醇 甲醇 

分 类 号：X703[环境科学与工程—环境工程]