Meso and micro-scale response of post carbon removal nitrifying MBBR biofilm across carrier type and loading

Water Research
Bradley YoungRobert Delatolla

Abstract

This study investigates the effects of three specific moving bed biofilm reactor (MBBR) carrier types and two surface area loading rates on biofilm thickness, morphology and bacterial community structure of post carbon removal nitrifying MBBR systems along with the effects of carrier type and loading on ammonia removal rates and effluent solids settleability. The meso and micro analyses show that the AOB kinetics vary based on loading condition, but irrespective of carrier type. The meso-scale response to increases in loading was shown to be an increase in biofilm thickness with higher surface area carriers being more inclined to develop and maintain thicker biofilms. The pore spaces of these higher surface area to volume carriers also demonstrated the potential to become clogged at higher loading conditions. Although the biofilm thickness increased during higher loading conditions, the relative percentages of both the embedded viable and non-viable cells at high and conventional loading conditions remained stable; indicating that the reduced ammonia removal kinetics observed during carrier clogging events is likely due to the observed reduction in the surface area of the attached biofilm. Microbial community analyses demonstra...Continue Reading

References

Mar 7, 2001·Applied and Environmental Microbiology·A GiesekeA Schramm
Feb 11, 2004·Water Research·António M P MartinsMark C M van Loosdrecht
Sep 1, 2009·Water Science and Technology : a Journal of the International Association on Water Pollution Research·R DelatollaD Berk
Mar 3, 2010·Proceedings of the National Academy of Sciences of the United States of America·Joseph B Binder, Ronald T Raines
Feb 15, 2011·International Journal of Systematic and Evolutionary Microbiology·Xiuqing XueChengxiang Fang
Sep 10, 2011·Bioinformatics·Tanja Magoč, Steven L Salzberg
Oct 1, 2013·Nature Methods·Joseph N PaulsonMihai Pop

❮ Previous
Next ❯

Citations

Feb 9, 2017·Bioprocess and Biosystems Engineering·Bradley YoungAlain Stintzi
Jul 8, 2018·Bioprocess and Biosystems Engineering·Alexander SchopfKathlyn M Kirkwood
Dec 1, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Rebecca R MattsonCraig Just
Apr 17, 2020·International Journal of Environmental Research and Public Health·Tong WangYang Chang
Sep 6, 2018·The Science of the Total Environment·Sanaz AlizadehYves Comeau

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.

Biofilms

Biofilms are adherent bacterial communities embedded in a polymer matrix and can cause persistent human infections that are highly resistant to antibiotics. Discover the latest research on Biofilms here.