The ability of bacterial cultures to create biofilm brings a possibility to enhance biological wastewater treatment efficiency. Moreover, the ability of Anammox and Nitrosomonas species to grow within the same biofilm layer enabled a one-stage system for nitrogen removal to be designed. Such a system, with Kaldnes rings as carriers for biofilm growth, was tested in a technical pilot plant scale (2.1 m3) at the Himmerfjärden Waste Water Treatment Plant (WWTP) in the Stockholm region. The system was directly supplied with supernatant originating from dewatering of digested sludge containing high ammonium concentrations. Nearly 1-year of operational data showed that during the partial nitritation/Anammox process, alkalinity was utilised parallel to ammonium removal. The process resulted in a small pH drop, and its relationship with conductivity was found. The nitrogen removal rate for the whole period oscillated around 1.5 g N m−2d−1 with a maximum value equal to 1.9 g N m−2d−1. Parallel to the pilot plant experiment, a series of batch tests were run to investigate the influence on removal rates of different dissolved oxygen conditions and addition of nitrite. The highest nitrogen removal rate (5.2 g N m−2d−1) in batch tests was obtained when the Anammox process was stimulated by the addition of nitrite. In the simultaneous partial nitritation and Anammox process, the partial nitritation was the rate-limiting step.
Skip Nav Destination
Article navigation
Research Article|
April 01 2007
A one-stage system with partial nitritation and Anammox processes in the moving-bed biofilm reactor Available to Purchase
B. Szatkowska;
1Department of Land and Water Resources Engineering, Royal Institute of Technology, Brinellvägen 32, S-100 44, Sweden (E-mail: , [email protected], [email protected], [email protected], [email protected])
E-mail: [email protected]
Search for other works by this author on:
G. Cema;
G. Cema
1Department of Land and Water Resources Engineering, Royal Institute of Technology, Brinellvägen 32, S-100 44, Sweden (E-mail: , [email protected], [email protected], [email protected], [email protected])
Search for other works by this author on:
E. Plaza;
E. Plaza
1Department of Land and Water Resources Engineering, Royal Institute of Technology, Brinellvägen 32, S-100 44, Sweden (E-mail: , [email protected], [email protected], [email protected], [email protected])
Search for other works by this author on:
J. Trela;
J. Trela
1Department of Land and Water Resources Engineering, Royal Institute of Technology, Brinellvägen 32, S-100 44, Sweden (E-mail: , [email protected], [email protected], [email protected], [email protected])
Search for other works by this author on:
B. Hultman
B. Hultman
1Department of Land and Water Resources Engineering, Royal Institute of Technology, Brinellvägen 32, S-100 44, Sweden (E-mail: , [email protected], [email protected], [email protected], [email protected])
Search for other works by this author on:
Water Sci Technol (2007) 55 (8-9): 19–26.
Citation
B. Szatkowska, G. Cema, E. Plaza, J. Trela, B. Hultman; A one-stage system with partial nitritation and Anammox processes in the moving-bed biofilm reactor. Water Sci Technol 1 April 2007; 55 (8-9): 19–26. doi: https://doi.org/10.2166/wst.2007.237
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Could not validate captcha. Please try again.
eBook
Pay-Per-View Access
$38.00