How is actual COD/NO3 determined for denitrification?

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Rima Biswas

Dear Nasir,

COD/NO3 ratio in denitrification is a smart way to ensure your bacteria gets a right dose of electron donor (i.e COD) for reducing your nitrates (electron acceptor). You must calculate this ratio from your initial concentrations i.e how much COD is available for reduction of say X mg of nitrates.

Nasiru Aminu

Rima and Valsa thanks for your answers. I really appreciate and found them useful.

Emilio Serrano

Calculatión base for a minimum soluble COD necessary for denitrification.

(Minimum soluble COD / 1 - YH) / NO3 = 2,86

YH = 0,67