What is it about?

In the implementation of two-stage nitritation-anammox process for mainstream nitrogen removal, a number of practical issues are rather forgotten in lab scale trials. In this publication we have concentrated our efforts on checking how reject water could be used to stabilize the ammonium concentration in the partial nitritation reactor.

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Why is it important?

The fluctuations of ammonium and flow rate during the day, that are typical for many WWTP may affect the performance of the nitrogen removal when PN/AMX is targeted. Here we show how these disturbances could be minimized with an accurate design and the use of centrate (sludge liquor or rejected water) to maintain a more constant ammonium concentration in the partial nitritation reactor.

Perspectives

This idea is part of a technology that is currently under development in a LIFE Project (http://saving-e.eu/new/).

Professor Julio Perez
Technische Universiteit Delft

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This page is a summary of: Would a two-stage N-removal be a suitable technology to implement at full scale the use of anammox for sewage treatment?, Water Science & Technology, June 2015, IWA Publishing,
DOI: 10.2166/wst.2015.281.
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