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COD calculation problem l, how much COD is left?

2010-09-07View Original

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8 tons of wastewater contains COD 1000mg/l, cyanide 100mg/l, and cyanide 0.5mg/l after cyanide breaking reaction. What should the CDO be?
Reply #22010-09-07
Yours is only a COD measurement after cyanide is broken. It cannot be calculated theoretically because part of the oxidant must be added when cyanide is broken. If the reaction is incomplete, this part of the oxidant will still be oxidized by potassium dichromate. Accurate results can only be obtained through inspection.

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Translated at 2026-07-27 01:52:16

Original: https://bbs.hcbbs.com/thread-728517-1-1.html

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