Relationship between COD and rCOD in influent, removal and effluent. (IMAGE)

Science China Press

Relationship between COD and rCOD in influent, removal and effluent.

Caption

An intercept-free least-square regression identifies a strong relationship between COD and rCOD that is robust to cross-validation. (a) rCOD5 contributed to 56% of COD in influent, (c) 74% of COD in effluent, and (b) 55% of COD removal in municipal WWTPs. (d) rCODu accounted for 33% of the influent, (f) 61% of the effluent, and (e) 32% of removal COD.

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