作　　者： ; ; ; ; ; ; ;

机构地区： 湖南大学环境科学与工程学院

出　　处： 《中国环境科学》 2011年第8期1268-1273,共6页

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： 单级好氧工艺 生物除磷 乙醇 甲醇

领　　域： [环境科学与工程]