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|Title:||Assessment of chloramination control strategy based on free-ammonia concentration|
|Citation:||Journal of Water Supply: Research and Technology. AQUA, 2009; 58(1):29-39|
|Organisation:||Institute for Mineral and Energy Resources|
|Skadi Motzko, Rolando Fabris, Alexander Badalyan, Ralph Henderson, Christopher W. K. Chow and Dammika Vitanage|
|Abstract:||A new approach of using free-ammonia measurements as the basis of a control strategy to optimise a chloraminated water distribution system was tested in a laboratory evaluation. A test rig with a newly developed low level on-line free-ammonia analyser was constructed to investigate two different control configurations, the currently used feedback and the proposed feedforward. The results of this trial showed that only using the free-ammonia analyser for feedback control is not ideal due to its inability to detect chlorine overdosing situations. Better results regarding the maximum yield of disinfectant residuals when using the feedforward configuration were observed, and free-ammonia concentrations below 0.065 mg/L were consistently achieved.|
|Keywords:||ammonia monitoring; chloramination control; control strategy; disinfection|
|Rights:||© IWA Publishing 2009|
|Appears in Collections:||Institute for Mineral and Energy Resources publications|
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