絮状活性污泥颗粒化处理高氨氮废水的研究_刘润
- 岁月如歌
-
41 次阅读
-
0 次下载
-
2019-03-31 23:12:38
文档简介:
絮状活性污泥颗粒化处理高氨氮废水的研究_刘润絮状活性污泥颗粒化处理高氨氮废水的研究*刘润安立超(南京理工大学环境与生物工程学院,南京210094)摘要:以普通的絮状污泥为接种污泥,保持COD不变,通过逐渐提高进水氨氮浓度,同时缩短沉淀时间,在SBR反应器中快速培养出具有短程硝化特性的好氧颗粒污泥。结果表明:保持ρ(COD)为300mg/L,将进水ρ(NH+4-N)从50mg/L逐渐提高至500mg/L,沉淀时间从40min逐渐缩短至2min,并控制曝气量为200L/h,pH值为8.0,温度为30℃,在第50天成功培养出了粒径为1.0~2.0mm,SVI为20.1mL/g的好氧颗粒污泥。在ρ(NH+4-N)为500mg/L,碳氮比为3∶5时,对氨氮和COD去除率分别达到了90%和99%,亚硝态氮的积累率达到了92%,出水COD和氨氮均达到了理想的去除效果。关键词:絮状活性污泥;好氧颗粒污泥;短程硝化;低碳氮比废水DOI:10.13205/j.hjgc.201409010STUDYONGRANULATIONOFFLOCCULENTACTIVATEDSLUDGETOTREATMENTHIGH-STRENGTHAMMONIAWASTEWATERLiuRunAnLichao(SchooloftheEnvironmentalandBiologicalEngineering,NanjingUniversityofScienceandTechnology,Nanjing210094,China)Abstract:Takingflocculentsludgeastheinoculationsludge,keepingCODvalueunchanged,increasinginfluentammoniaconcentrationandgraduallyshorteningthesettlingtime,partialnitrificationaerobicgranularsludgeinSBRwasdeveloped.TheresultsshowedthatwhenCODvaluewaskeptat300mg/Landtheconcentrationofammonianitrogenwasincreasedfrom50mg/Lto500mg/Lgradually,settlingtim
评论
发表评论