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RESEARCH PRODUCT
Experimental sulphide inhibition calibration method in nitrification processes: A case-study.
A. M. MaciáJ. SerraltaG. Noriega-heviaO. MateoA. BouzasL. PastorC. Lardínsubject
Environmental EngineeringCalibration methodology0208 environmental biotechnologyNitrification inhibition02 engineering and technologyAmmonia-oxidising bacteria calibration010501 environmental sciencesManagement Monitoring Policy and LawSulfides01 natural sciencesBioreactorsSulphide inhibitionAmmoniaWaste Management and DisposalInhibitory effectTECNOLOGIA DEL MEDIO AMBIENTENitrites0105 earth and related environmental sciencesNitrite-oxidising bacteria calibrationbiologySewageChemistryGeneral Medicinebiology.organism_classificationNitrification020801 environmental engineeringActivated sludgeWastewaterEnvironmental chemistrySoil waterCalibrationNitrificationOxidation-ReductionBacteriadescription
[EN] Sulphide is one of the inhibitors in the nitrification process in WWTP in regions with sulphate rich soils. As little information is currently available on sulphide nitrification inhibition, the aim of this study was to develop a method based on a modification of the Successive Additions Method to calibrate the effect of sulphide on the activity of ammonia-oxidising bacteria (AOB) and nitrite-oxidising bacteria (NOB). The developed method was then applied to activated sludge samples from two WWTPs with different influent sulphide concentrations. In both cases, sulphide had a greater inhibitory effect on NOB than AOB activity. The sulphide inhibition was found to be lower in the activated sludge fed with sulphide-rich wastewater. The AOB and NOB activity measured at different sulphide concentrations could be accurately modelled with the Hill inhibition equation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-11-15 | Journal of environmental management |