sewage

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…showed last 75 words of 1060 total…The water flows in the tank where the chemical chlorine is added to kill bacteria. The chlorine is mostly eliminated as the bacteria are destroyed, but sometimes a neutralizing chemical must be added. This protests fish and wildlife which could be killed with a same amount of chlorine. The treated water is called effuent. This is discharged to a local river or the ocean. Like the Hudson, Harlem river an! d East river ------------------------------------------------------------------------ **Bibliography**