Research nitrification kinetics using microbiological techniques motion-rise in seawater

Abstract

Nitrification by moving bed biofilm reactor (MBBR)  involves physical, chemical and biological  processes,  that  are  governed  by a variety  of  parameters  such  as substrate and dissolved oxygen concentrations, organic  matters, temperature,  pH, alkalinity, salinity  and turbulence level. The impacts of these parameters upon nitrification kinetics make predicting the performance of a biofilter for a give application an engineering challenge.  Knowing the performance of a biofilter is critical for both designers and managers. This paper presents the current knowledge the nitrification kinetics are affected by salinity and initial concentration.

In this study, the kinetical data of  nitrification process conducted by MBBR under oligotrophic condition and in saline medium were analysed by the general kinetics model of n - th order equation and compaired with other data analysis procedures. The established procedure was used to investigate the influence  salinity on the kinetical behaviours of  the nitrification process under oligotrophic conditions in  saline water. Low ammonium concentration (oligotrophic) and high salinity within a system represent the inhibitory factors on the process, which considerably reduce the nitrification performances. The general kinetics model of n - th order equation couldmbe use to simulate kinetical nitrification in circumstance conditions.