升流式厌氧污泥床工艺处理木薯酒精废水研究

安徽农业科学，JournalofAnhuiAgri．Sci．2010，38(31)：17640—17642责任编辑张杨林责任校对卢瑶升流式厌氧污泥床工艺处理木薯酒精废水研究王志刚，浦跃武(华南理_丁大学生物科学与工程学院，广东广9I'l510¨0o6)摘要[目的]为科学利用木薯酒精提供参考。[方法]采用升流式厌氧污泥床(UASB)工艺处理木薯酒精废水，对污泥驯化阶段挥发性脂肪酸(VFA)和碱度(ALK)的变化进行研究。[结果]整个驯化阶段，出水pH值在7．0～7．3，VFA随着进样负荷的增大而增大，从开始的162mg／L上升到780ing／I。虽然VFA浓度增加，但UASB反应体系并没有出现酸化，主要是反应体系的ALK也随着变化，有较高的ALK，其值从915ITIg／L升高到6157mg／L，并且VFA／ALK的值维持在0．1～0．3，同时COD的去除率也稳定在9o％左右。说明VFA、ALK的值虽然变化，但只要其使系统的pH值稳定，整个UASB厌氧处理系统能较好地运行。l结论i升流式厌氧污泥床工艺可用于处理木署酒精废水。关键词木薯酒精废水；UASB反应器；挥发性脂肪酸；碱度中图分类号x71文献标识码A文章编号05l7—661l(2010)31—17640—03ResearchontheTreatmentoftheWastewaterfromCassavaEthanol·processingwiththeTechnologyofAnaerobicUp·flowingSludgeBedWangZhigangetal(CollegeofBiologicalScienceandEngineering，SouthChinaUniversityofIndustry，Guangzhou，Guangdong510006)AbstractjObjectiveIThereferenceforthescientificuseofthealcoholfromcassavawasprovidedthroughtheresearch．1MethodlT}lechangeofthevolatilefattyaeid(VFA)andalkalinity(ALK)ofthewastewaterfromthecassavaalcohol—processwasstudiedinitsdomestiea．tionperiodwhilethetechnologyofanaerobicup—flowingsludgebed(UASB)wasadopted．[Results]Tbroughoutthedomesticationperiod，thepHvalueoftheefluentwas7．0—7．3：theVFAwasincreasingasthesample’sloading．whichwasmisedfrom】62mg／Latthejnitialtimeto780mg／L．TheacidificationinthereactionsystemofUASBdidnotappearalthoughtheconcentrationofVFAincreased．whichmainlyindi—caredthattheALKwasalsochangedwiththevariationofthereactionsystem．andthevalueofALKwashigh，whichvariedfrom915mg／Latinitialtimeto6157Illg／L．AndtheratioofVFA／ALKvaluewasmaintainedintherangefrom0．1to0．3．andmeanwhile．theremovalrateofC0Dwasalsostabilizedatthelevelofabout90％．AslongastherewasastablepHvalueinthesystem．thesystemofUASBanaerobictreatmentcouldbewell131neventhoughthevalueofVFAandALKhadbeeninchange．IConclusionlThetechnologyofanaerobicup．flowingsludgebedmightbeuse(1inthetreatmentofthewastewaterfrOIllcassavaethanol—processing．KeywordsWastewaterfromcassavaethanol—processing：UASBreactor：Volatilefattyacid：Alkalinity我国广东、广西等地盛产木薯，其淀粉含量高，易种植，耐干旱贫瘠，且不