On-line estimation of nitrification and denitrification capacity at Avedøre wastewater treatment plant

Rosén, ChristianLund University,Lunds universitet,Industriell elektroteknik och automation,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Industrial Electrical Engineering and Automation,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH (author)

In this paper, on-line nitrification and denitrification rate estimation in an alternating wastewater treatment plant is discussed. The nitrification/denitrification rates are estimated on-line using continuous measurements of ammonia and nitrate. From the rate estimates, the plant capacity is derived. This information is useful in various ways: for early warning to prevent severe disturbances such as nitrification inhibition; for optimising phase lengths and distribution of the phases in the alternating operation; and directly for the control system of the treatment plant. The estimation is based on the derivatives of the measurement signals combined with a simplified model of nitrogen dynamics of the plant. In the paper, we show examples of a successful application of the estimation methods to full-scale operation of the treatment plant and are today incorporated in the control system.

Ingildsen, P (author)
Guildal, T (author)
Nielsen, M K (author)
Jacobsen, B N (author)
Ønnerth, T (author)
Industriell elektroteknik och automationInstitutionen för biomedicinsk teknik (creator_code:org_t)

By the author/editor: Rosén, Christian; Ingildsen, P; Guildal, T; Nielsen, M K; Jacobsen, B N; Ønnerth, T

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