Journal ArticleDOI
Nitrite accumulation by aeration controlled in sequencing batch reactors treating domestic wastewater
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Based on the on-line indirect measurements of DO and pH, the relationship between pH (or DO) and nitrogen concentration is investigated and indicates that pH and DO can be used as control parameters for the real-time aeration control strategy to obtain nitritation in SBR treating domestic wastewater.About:
This article is published in Water Science and Technology.The article was published on 2004-11-01. It has received 112 citations till now. The article focuses on the topics: Aeration & Wastewater.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 Article
Biological nitrogen removal with nitrification and denitrification via nitrite pathway
TL;DR: In this article, the authors present a review of the applicability of partial nitrification of ammonium to nitrite in wastewater treatment, its consequences for application, the current status regarding application, and its future developments.
Journal ArticleDOI
Biological nitrogen removal with nitrification and denitrification via nitrite pathway
TL;DR: Partial nitrification to nitrite was reported to be technically feasible and economically favorable, especially when wastewater with high ammonium concentrations or low C/N ratios is treated.
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Control of aeration, aerobic SRT and COD input for mainstream nitritation/denitritation.
Pusker Regmi,Mark W. Miller,Becky Holgate,Ryder Bunce,Hongkeun Park,Kartik Chandran,Bernhard Wett,Sudhir Murthy,Charles Bott +8 more
TL;DR: This pilot-scale study demonstrates that application of the proposed online aeration control is able to out-select NOB in mainstream conditions providing relatively high nitrogen removal without supplemental carbon and alkalinity at a low HRT.
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Partial nitrification to nitrite using low dissolved oxygen concentration as the main selection factor.
TL;DR: Partial nitrification to nitrite (nitritation) can be achieved in a continuous process without sludge retention by wash out of nitrite oxidisingacteria (NOB) while retaining ammonia oxidising bacteria (AOB) at elevated temperatures and at low dissolved oxygen (DO) concentrations.
References
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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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Simultaneous nitrification and denitrification in bench-scale sequencing batch reactors
TL;DR: For most of the time of reactor operation nitrite was the main NOx species in the effluent, instead of the commonly expected nitrate, which led to the conclusion that the activity of Nitrobacter species was probably inhibited in the SBRs studied.
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Influence of pH over nitrifying biofilm activity in submerged biofilters
TL;DR: The influence of pH over nitrification in submerged biofilters has been studied through the observation of three pH effects over the nitrifying biofilm: activation-deactivation, substrate limitation, and free ammonia inhibition.
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Influence of aeration and sludge retention time on ammonium oxidation to nitrite and nitrate.
TL;DR: The results showed that partial nitrification to nitrite was steadily obtained under oxygen limitation, independent of the sludge age, and the aeration pattern is proposed as an alternative parameter to theSludge retention time for controlling ammonium oxidation to Nitrite.
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Microbiological conversions in nitrogen removal.
TL;DR: An overview of the possible microbiological nitrogen conversion described in literature is provided in this paper, where the relevance of these conversions with respect to wastewater treatment processes is discussed and the complexity of analysing the reactions under actual conditions is discussed.