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Chlorine as a Disinfectant: Pros and Cons

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What is the objection to using chlorine gas to disinfect wastewater effluent, and suggest two alternative substances that can be used without causing this problem.

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What is the objection to using chlorine gas to disinfect wastewater effluent, and suggest two alternative substances that can be used without causing this problem.

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When chlorine is added water supplies it can react with other dissolved substances in the water and produce unwanted
chemicals, called "disinfection by-products". This natural organic matter comes from plants and/or animals that break down
into smaller components and dissolve in the water. These by-products tend to be organic compounds - the most common class being known as ...

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