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Interactions of Temperature, pH, and Biomass on the Nitrification Process

Nazih Kh. Shammas
Journal (Water Pollution Control Federation)
Vol. 58, No. 1 (Jan., 1986), pp. 52-59
Stable URL: http://www.jstor.org/stable/25042841
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Interactions of Temperature, pH, and Biomass on the Nitrification Process
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Abstract

Fill-and-draw completely mixed activated sludge reactors were used to determine the effects of MLVSS concentration, pH, and temperature on nitrification rate. Forty-five experiments were divided into three series of MLVSS concentrations. Each series of 15 experiments were distributed among three different pH groups. In each group, five experiments were conducted at 4°, 10°, 17°, 25°, and 33°C. The best nitrification performance was obtained at pH 8.3, between 25° and 33°C. There was no interaction between the effects of temperature and pH. However, a change in biomass concentration altered both the pH and temperature dependence of the process. The temperature coefficient is expressed as a function of MLVSS concentration.

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