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时间:2020-04-23
《UASB反应器处理链霉素废水启动及运行性能-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第8卷第3期环境工程学报Vo1.8.No.32014年3月ChineseJournalofEnvironmentalEngineeringMar.2O14UASB反应器处理链霉素废水启动及运行性能刘春李敏源赵瑞英杨景亮崔倩王悦(1.河北科技大学环境科学与工程学院,石家庄050018;2.晋煤金石化工投资集团有限公司,石家庄050041)摘要采用上流式厌氧污泥床(UASB)反应器处理链霉素生产废水,研究了中温条件下反应器启动和稳定运行中废水处理性能及厌氧污泥颗粒化过程。结果表明,通过逐步提高链霉素废水进水比例和负
2、荷,可以实现UASB反应器的启动和稳定运行,并对高浓度链霉素实际废水具有良好的处理性能,COD去除率稳定在80%以上,COD去除负荷达7.2kg/(in·d),CH产生量达到6.2L/d。UASB反应器启动运行过程中,链霉素废水对污泥活性具有抑制影响,造成短期反应器运行性能明显下降,而后很快恢复。同时高负荷链霉素废水造成甲烷产率降低。污泥性状变化显著,污泥形态逐渐转变为颗粒态,污泥粒径增大,出现大量0.5~1.0iTlin颗粒污泥,污泥VSS/SS比值升高,污泥沉降性明显增强,比产甲烷活性显著升高,表明污泥开始
3、实现颗粒化。关键词链霉素废水UASB反应器运行性能污泥颗粒化中图分类号X176文献标识码A文章编号1673—9108(2014)03—0851—06Start.upandperformance0fUASBreactortreatingstreptomycinwastewaterLiuChunLiMinyuanZhaoRuiyingYangJingliangCuiQianWangYue(1.SchoolofEnvironmentalScienceandEngineering,HebeiUniversityofSc
4、ienceandTechnology,Shijiazhuang050018,China2.JinchengAnthraciteJinshiChemicalIndust~InvestmentGroupLtd.Co.,ShOiazhuang050041,China)AbstractThestart—upandperformanceofamesophilicup-flowanaerobicsludgeblanket(UASB)reactorusedtotreatstreptomycinwastewaterwerein
5、vestigatedandthesludgegranulationduringstart—upandstableop-erationofthereactorwasalsoexplored.Theresultsindicatedthatthesuccessfulstart-upandthestableoperationoftheUASBreactorcouldberealizedbyincreasingtheratioandorganicloadingrate(OLR)ofstreptomycinwastewat
6、erintheinfluent.TheCODremovalratewasabove80%,andtheOLRremovedandthemethanepro—ductionreachedupto7.2kg/(m·d)and6.2L/d,respectively,indicatingtheeficientandstabletreatmentofhigh—strengthstreptomycinwastewaterintheUASBreactor.Thestreptomycinwastewatershowedthei
7、nhibitioneffectonsludgebioactivityduringthereactorstart—up,resultinginshort—termperformancedeteriorationofthere—actor,thenrecoveredsoon.ThedecreasedmethaneyieldwasalsoobservedathighOLRofstreptomycinwastewater.Thesludgecharacteristicsvariedgreatlyduringstart—
8、upandstableoperationofthereactor.Thein-oculatedflocculentsludgetransformedtogranularsludgegradually.Thesludgediameter,sludgeVSS/SSratioandsludgesettleabilityincreased.Alargeamountofgranularsludg
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