Change search
ReferencesLink to record
Permanent link

Direct link
Influence of dissolved oxygen concentration on deammonification process performance
KTH, Superseded Departments, Land and Water Resources Engineering.
KTH, Superseded Departments, Land and Water Resources Engineering.
KTH, Superseded Departments, Land and Water Resources Engineering.
KTH, Superseded Departments, Land and Water Resources Engineering.
2004 (English)In: Integration and optimisation of urban sanitation systems: Proceedings of a Polish-Swedish seminar / [ed] E. Plaza, E. Levlin, B. Hultman, 2004, 121-131 p.Conference paper (Other academic)
Abstract [en]

Partial nitrification together with Anammox process (deammonification) is a new method fornitrogen removal from wastewater, which nowadays is widely studied in Europe. Compared toconventional nitrification/denitrification, this method saves 100% of the required organic carbonsource and over 60% of the required oxygen. This leads to a reduction of operational costs of 90%.The deammonification process was successfully tested on a laboratory-scale pilot plant at RoyalInstitute of Technology (KTH) in Sweden for over 2 years. Two reactors of pilot plant were filledwith Kaldnes rings as a biofilm carrier and supplied with a supernatant from dewatering of thedigested sludge at the Bromma Wastewater Treatment Plant (WWTP). For the stable and efficientprocess performance a suitable values of many parameters as dissolved oxygen, pH, temperature,NO2-N and NO3-N concentration should be assured. This article presents an evaluation of theinfluence of dissolved oxygen (DO) on the deammonification process efficiency. Analysis of eightmonths operation of pilot plant proved that high N-removal efficiency of second reactor (Anammox)is assured by proper NO2-N/NH4-N ratio in the effluent from the first reactor depending on DOconcentration. To estimate influence of DO concentration on reaction rates during the Anammoxprocess several batch tests were performed. The highest ammonium and nitrite removal rates wereobtained for DO concentration amounted to 0.2รท0.4 mg O2/l. This is in agreement with theobservations from laboratory-scale pilot plant, when the best results for Anammox processefficiency took place under similar oxygen conditions. A linear correlation between inorganicnitrogen removal and conductivity in the batch tests proved that conductivity could be a suitableparameter for a nitrogen removal process control.

Place, publisher, year, edition, pages
2004. 121-131 p.
, Joint Polish Swedish reports, ISSN 1650-8610 ; 11
Keyword [en]
ammonium removal rate, Anammox, batch test, conductivity, deammonification, dissolved oxygen
National Category
Water Engineering
URN: urn:nbn:se:kth:diva-86531ISBN: 91-7283-664-4OAI: diva2:500806
Polish-Swedish seminar, Wisla October 25-28, 2003
QC 20120228Available from: 2012-02-13 Created: 2012-02-13 Last updated: 2012-02-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Search in DiVA

By author/editor
Szatkowska, BeataPlaza, ElzbietaTrela, JozefBakowska, Anna Maria
By organisation
Land and Water Resources Engineering
Water Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 120 hits
ReferencesLink to record
Permanent link

Direct link