DENITRIFICATION WITH CARBON ADDITION – KINETIC CONSIDERATIONS
The Blue Plains AWTP uses methanol as an external carbon source in a post-denitrification process to achieve low effluent total nitrogen concentrations. This becomes more difficult in winter at lower mixed liquor temperatures and higher flows, as a consequence of the kinetic behavior of the methanol-utilizing heterotrophs. The paper reports on an experimental batch test study conducted on Blue Plains post-denitrification sludge to investigate (a) the maximum specific growth rate of methanol-utilizing heterotrophs (μMETH); (b) the temperature dependency of the growth rate; and (c) the efficacy of alternate substrates (ethanol, acetate, sugar). A limited number of tests were conducted on sludge from two other treatment plants with methanol addition.
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Document Type: Research Article
Publication date: 01 January 2007
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