Effect of alkali_省略_ biofilm reactor_Baolin Hou

Effect of alkali_省略_ biofilm reactor_Baolin HouJournalofEnvironmentalSciences26(2014)1014–1022www.jesc.ac.cnJournalofEnvironmentalSciencesAvailableonlineatwww.sciencedirect.comEffectofalkalinityonnitriteaccumulationintreatmentofcoalchemicalindustrywastewaterusingmovingbedbiofilmreactorBaolinHou,HongjunHan∗,ShengyongJia,HaifengZhuang,QianZhao,PengXuStateKeyLaboratoryofUrbanWaterResourceandEnvironment,HarbinInstituteofTechnology,Harbin150090,China,E-mail:hbl527@163.comarticleinfoArticlehistory:Received22June2013revised31October2013accepted07November2013Keywords:alkalinitynitritationcoalchemicalindustrywastewatermovingbedbiofilmreactorDOI:10.1016/S1001-0742(13)60517-3abstractNitrogenremovalvianitrite(thenitritepathway)ismoresuitableforcarbon-limitedindustrialwastewater.Partialnitrificationtonitriteistheprimarysteptoachievenitrogenremovalvianitrite.Theeffectofalkalinityonnitriteaccumulationinacontinuousprocesswasinvestigatedbyprogressivelyincreasingthealkalinitydosageratio(amountofalkalini