Odor problems in sewers are not solved by which chemical option?

Odor problems in sewers are not solved by which chemical option?

• A. Sulfuric acid
• B. Hydrogen peroxide
• C. Chlorine
• D. Aeration

Answer: (A)

Odor control in sewers centers on removing or suppressing hydrogen sulfide and other volatile compounds produced in anaerobic conditions. Oxidants like chlorine and hydrogen peroxide react with these odor-causing chemicals to form non-volatile or less odorous species, so odors diminish. Aeration helps by stripping volatile compounds and increasing dissolved oxygen, which shifts conditions away from odor production. Sulfuric acid, however, isn’t used for odor control. Lowering the pH with strong acids can actually make hydrogen sulfide more volatile, increasing odors rather than reducing them, and it doesn’t oxidize the odor-causing compounds. It also introduces corrosion and other safety risks. So it does not solve odor problems in sewers.

Odor control in sewers centers on removing or suppressing hydrogen sulfide and other volatile compounds produced in anaerobic conditions. Oxidants like chlorine and hydrogen peroxide react with these odor-causing chemicals to form non-volatile or less odorous species, so odors diminish. Aeration helps by stripping volatile compounds and increasing dissolved oxygen, which shifts conditions away from odor production.

Sulfuric acid, however, isn’t used for odor control. Lowering the pH with strong acids can actually make hydrogen sulfide more volatile, increasing odors rather than reducing them, and it doesn’t oxidize the odor-causing compounds. It also introduces corrosion and other safety risks. So it does not solve odor problems in sewers.