Question

chlorine is passed into water in the Sewage treatment plant . Give reasons?
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Answer 1

Chlorine, a disinfectant commonly used in most wastewater treatment plants, may be failing to completely eliminate pharmaceuticals from wastes. As a result, trace levels of these substances get discharged from the plants to the nation’s waterways. And now, scientists are reporting preliminary studies that show chlorine treatment may encourage the formation of new, unknown antibiotics that could also enter the environment, potentially contributing to the growing problem of antibiotic resistance.

The research, which will be presented today at the 249th National Meeting & Exposition of the American Chemical Society (ACS), suggests that a re-evaluation of wastewater treatment and disinfection practices is needed. The ACS is the world’s largest scientific society. The national meeting, which takes place here through Thursday, features nearly 11,000 presentations on a wide range of science topics.

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Answer 2

it is becoz chlorine kills the microorganisms present in water