Which practice helps minimize taste and odor problems caused by volatile compounds in finished water?

Which practice helps minimize taste and odor problems caused by volatile compounds in finished water?

• A. Coagulation
• B. Filtration only
• C. Chlorination
• D. Aeration

Answer: (D)

Taste and odor problems from volatile compounds in finished water are best addressed by methods that physically remove these compounds by transferring them from water into the air. Aeration achieves this by increasing the water’s contact with air and creating turbulence, which promotes gas exchange. Because volatile compounds, like geosmin and 2-MIB, readily evaporate, aeration effectively strips them from the water, lowering their concentration and improving flavor and odor. Coagulation helps remove suspended particles and some dissolved organics, but it doesn’t specifically target the removal of volatile compounds through gas transfer. Filtration can remove particulates and, with activated carbon, some organics, but it isn’t as direct or effective for stripping volatile substances as aeration. Chlorination disinfects and can oxidize some compounds, but it’s not primarily used to reduce taste and odor from volatiles and can even introduce its own taste/odor issues if not managed carefully.

Taste and odor problems from volatile compounds in finished water are best addressed by methods that physically remove these compounds by transferring them from water into the air. Aeration achieves this by increasing the water’s contact with air and creating turbulence, which promotes gas exchange. Because volatile compounds, like geosmin and 2-MIB, readily evaporate, aeration effectively strips them from the water, lowering their concentration and improving flavor and odor.

Coagulation helps remove suspended particles and some dissolved organics, but it doesn’t specifically target the removal of volatile compounds through gas transfer. Filtration can remove particulates and, with activated carbon, some organics, but it isn’t as direct or effective for stripping volatile substances as aeration. Chlorination disinfects and can oxidize some compounds, but it’s not primarily used to reduce taste and odor from volatiles and can even introduce its own taste/odor issues if not managed carefully.