Environmental Engineering in CE
Phenolic water generated in coke ovens & by-product plant of a steel plant are disposed off by

None of these
Quenching of hot coke
Filtration and recycling for cooling coke oven gas
Discharging in the river stream

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Environmental Engineering in CE
Aerobic biological oxidation ponds used for the purification of polluted water

Is not very effective for nonbiodegradable substances (e.g. ABS) containing effluents
All of these
Destroys/removes pathogen from the sewage
Destroys/removes pathogen much more effectively if the sewage is chlorinated

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