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Fig. 3 | Environmental Sciences Europe

Fig. 3

From: Complex odor control based on ozonation/GAC advanced treatment: optimization and application in one full-scale water treatment plant

Fig. 3

Evaluation of the FPA in the source water and after each unit treatment process in XCD WTP. The dosage of pre-ozonation was demonstrated on the X axis. FPA odor intensity at 0 indicates odor-free samples; at 1 indicates the odor threshold; at 2 to 4 indicates a very weak to weak odor; at 6 to 8 indicates a moderate odor; and at 10 to 12 indicates a strong odor

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