Journal ArticleDOI
Total and stable washout of nitrite oxidizing bacteria from a nitrifying continuous activated sludge system using automatic control based on Oxygen Uptake Rate measurements.
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The results showed a stable operation of the partial nitrification system during more than 100 days and NOB washout was corroborated with fluorescence in-situ hybridization (FISH) analysis.About:
This article is published in Water Research.The article was published on 2009-06-01. It has received 119 citations till now. The article focuses on the topics: Nitrification & Denitrification.read more
Citations
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Journal ArticleDOI
Engineering aspects and practical application of autotrophic nitrogen removal from nitrogen rich streams
Stijn Van Hulle,Stijn Van Hulle,Helge Vandeweyer,Boudewijn Meesschaert,Peter A. Vanrolleghem,Peter A. Vanrolleghem,Pascal Dejans,Ann Dumoulin +7 more
TL;DR: In this article, an overview of the practical implementation of autotrophic nitrogen removal is presented, and the different nitrogen removal processes are compared in terms of operational conditions and a direction for future work is provided.
Journal ArticleDOI
The role of nitrite and free nitrous acid (FNA) in wastewater treatment plants
TL;DR: A single inhibition mechanism is not sufficient to explain the negative impacts of FNA on microbial metabolisms and that multiple inhibitory effects can be generated from FNA, and further research is necessary before the FNA inhibition mechanisms can be more effectively used to optimize WWTP bioprocesses.
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Effect of cerium dioxide, titanium dioxide, silver, and gold nanoparticles on the activity of microbial communities intended in wastewater treatment
Ana García,Lucía Delgado,Josep A. Torà,Eudald Casals,Edgar González,Víctor F. Puntes,Xavier Font,Julián Carrera,Antoni Sánchez +8 more
TL;DR: This work investigates, by using respiration tests and biogas-production analysis, the inhibitory effect of four different commonly used metal oxide and zero-valent metal nanoparticles on the activity of the most important microbial communities present in a modern wastewater-treatment plant.
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Biomass segregation between biofilm and flocs improves the control of nitrite-oxidizing bacteria in mainstream partial nitritation and anammox processes
Michele Laureni,Michele Laureni,David G. Weissbrodt,Kris Villez,Orlane Robin,Nadieh de Jonge,Alex Rosenthal,George Wells,Jeppe Lund Nielsen,Eberhard Morgenroth,Adriano Joss +10 more
TL;DR: Experimental results and model predictions demonstrate the increased operational flexibility, in terms of variables that can be easily controlled by operators, offered by hybrid systems as compared to solely biofilm systems for the control of NOB in mainstream PN/A applications.
Journal ArticleDOI
Partial nitrification/denitrification can be attributed to the slow response of nitrite oxidizing bacteria to periodic anoxic disturbances.
TL;DR: A mathematical model was developed to describe with sufficient accuracy the performance of AOB and NOB under aerobic, anoxic, and transient conditions in both CSTR and batch type systems and proves the previously postulated mechanism for achieving nitrogen removal via the partial nitrification/denitrification (PND) process.
References
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Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
Journal Article
Inhibition of nitrification by ammonia and nitrous acid
TL;DR: The importance of NITRIFICATION has been recognized for more than a hundred years and engineers and scientists continue to investigate the process to obtain a better understanding of the fundamentals and to use the process for the benefit of man.
Journal Article
Inhibition of nitrification by ammonia and nitrous acid.
TL;DR: Control nitrification may occur during waste treatment, and engineers have begun to incorporate the process as part of nitri fication-denitrification systems for nitrogen control preceding discharge of the treated wastes.
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The sharon process: an innovative method for nitrogen removal from ammonium-rich waste water
TL;DR: In this paper, a new biological process for ammonia removal from flows containing hundreds to thousands milligrams NH + 4 per litre has been developed at the Delft University of Technology.
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In situ Identification of Ammonia-oxidizing Bacteria
TL;DR: A 16S rRNA-targeted oligonucleotide probe (NEU) specific for some representatives of the lithoautotrophic ammonia-oxidizing bacteria was developed based on comparative sequence analysis and showed promise in detecting dense cell clusters exclusively in those samples originating from sewage treatment plants with stable nitrification.