Application of pH, DO and OUR Control for Short-Cut Nitrification

Abstract:

A sequencing batch reactor was employed to treat ammonia wastewater, the pH, DO and OUR were adopted to monitor the start of short-cut nitrification. The results showed that the start of short-cut nitrification was achieved in 31days, ammonia consumption rate was higher than 90% and nitrite accumulation rate was higher than 85%, when pH, DO and OUR were applied to monitor and determine the aeration time, under the condition of temperature was 30°C. With ammonia shock loading conditions, OUR curve couldn’t indicate the end of short-cut nitrification exactly. But real-time control using pH and DO could achieve a stable shortcut nitrification under steady stage and ammonia load shocking stage.

• Periodical: Advanced Materials Research (Volumes 347-353)
• Pages: 2112-2116
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.347-353.2112
• Online since: October 2011
• Authors: Wen Bing Chen, Meng Tian, Ran Ran Wang, Feng Liu
• Keywords: Dissolved Oxygen (DO), Nitrite Accumulation, Oxygen Uptake Rate, Sequencing Batch Reactor (SBR), Short-Cut Nitrification

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