低碳源废水培养的好氧颗粒污泥常温储存后活性恢复研究

中国环境科学2018,38(12)：4530~4536ChinaEnvironmentalScience低碳源废水培养的好氧颗粒污泥常温储存后活性恢复研究邹金特1,何航天2,潘继杨2,陶亚强2,李军1*(1.浙江省工业污染微生物控制技术重点实验室,浙江工业大学环境学院,杭州浙江310014；2.浙江工业大学建筑工程学院,杭州浙江310014)摘要：通过考察好氧颗粒污泥特征、比耗氧速率(SOUR)、处理效果和菌群的变化,探索常温储存实际低碳源废水培养出的好氧颗粒污泥的可行性.试验结果表明,常温清水储存60d后颗粒结构未出现明显解体;污泥浓度由4960mg/L小幅降低至4740mg/L,但沉降性能保持良好(SVI为24.2mL/g);SOUR整体下降较小(16%),尤其是硝化菌的SOUR;污泥菌群在门和属水平上的相对丰度均发生了变化.在恢复运行后,颗粒形态恢复快且良好,粒径在长期运行后明显增大(200~250µm);污泥沉降性能始终保持良好(SVI﹤20mL/g),SOUR在运行20d后既能恢复;运行11d后COD处理效果完全恢复(平均出水COD为53mg/L),运行5d后NH4+-N处理效果完全恢复(平均出水NH4+-N为0.7mg/L).常温清水储存好氧颗粒污泥不仅操作方便,而且反应器能快速恢复稳定运行,具有显著的实际应用价值.关键词：实际低碳源废水；常温储存；好氧颗粒污泥；活性恢复中图分类号：X703文献标识码：A文章编号：1000-6923(2018)12-4530-07Reactivationofaerobicgranularsludgecultivatedbylow-strengthwastewaterafterroom-temperaturestorage.ZOUJin-te1,HEHang-tian2,PANJi-yang2,TAOYa-qiang2,LIJun1*(1.KeyLaboratoryofMicrobialTechnologyforIndustrialPollutionControlofZhejiangProvince,CollegeofEnvironment,ZhejiangUniversityofTechnology,Hangzhou310014,China；2.CollegeofCivilEngineering,ZhejiangUniversityofTechnology,Hangzhou310014,China).ChinaEnvironmentalScience,2018,38(12)：4530~4536Abstract：Toinvestigatethefeasibilityofroom-temperaturestorageofaerobicgranularsludge(AGS)cultivatedbyrealandlow-strengthwastewater,thevariationsofAGScharacteristics,specificoxygenuptakerate(SOUR),removalefficiencyandmicrobialcommunitywereexplored.Theexperimentalresultsshowthatafter60daysstorageusingtapwateratroom-temperature,thestructureofAGSwasstillintactanddidnotdisintegrateobviously.Themixedliquorsuspendedsolids(MLSS)slightlydecreasedfrom4960mg/Lto4740mg/L,butthesettlingpropertymaintainedwell(SVI:24.2mL/g).ThedecreaseinSOURwasveryslight(16%),especiallyfortheSOURofnitrifyingbacteria.Theabundanceofmicrobialcommunitychangedatthephylumandgenuslevel.Afterrestartingthereactor,AGSmorphologyrecoveredquicklyandthegranulesizeincreasedafterlong-termoperation(200~250µm).Thesludgesettlingpropertyhasalwaysmaintainedwell(SVI<20mL/g),andtheSOURrecoveredsoonafter20daysoperation.TheCODremovalefficiencywascompletel