Environmental Engineering in CE
Bag filter design is predominantly dependent on gas temperature, as it affects the gas density & viscosity and the selection of filtering material. The pressure drop in a bag filter is

Both B and C
Inversely proportional to viscosity of gas
Proportional to the pressure of the gas
Proportional to the viscosity & density of the gas

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

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

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