Control of carbon and ammonium ratio for simultane

Control of carbon and ammonium ratio for simultaneous nitrification and denitrification in a sequencing batch bioreactorInternationalBiodeterioration&Biodegradation59(2007)1–7ReviewControlofcarbonandammoniumratioforsimultaneousnitrificationanddenitrificationinasequencingbatchbioreactorYing-ChihChiua,�,Li-LingLeeb,1,Cheng-NanChangb,AllenC.ChaocaDepartmentofEnvironmentalEngineering,NationalIlanUniversity,I-LanCity,Taiwan26041,ROCbGraduateInstituteofEnvironmentalScienceandEngineering,TunghaiUniversity,Box5-819,TaichungCity,Taiwan40704,ROCcDepartmentofCivilConstructionandEnvironmentalEngineering,NorthCarolinaStateUniversity,Raleigh,NC27695,USAReceived11April2006;receivedinrevisedform13July2006;accepted1August2006Availableonline2October2006AbstractThisstudyshowshowthecarbonandnitrogen(C/N)ratiocontrolsthesimultaneousoccurrenceofnitrificationanddenitrificationinasequencingbatchreactor(SBR).DatademonstratedthatalowC/Nratioresultedinarapidcarbondeficit,causinganunbalancedsimultaneousnitrificat