Leadership

To What Extent May Disinfection Take Place of Filtration?

Issue 20 and Volume 75.

To What Extent May Disinfection Take Place of Filtration? Differences of Opinion on Subject Among Engineers—Possibilities of Pollution—Dividing Line Between Light and Heavy Pollution IN the following article Mr. Coulter advocates the combination of filtration and chlorination in the purification of water supplies: Chlorinating plants for the disinfection of public water supplies form, in many cases, the sole line of defense between pollution and the consumer. An outstanding example is the Dunwoodie chlorinating plant, treating water supplied to New York City. In numerous other cases, chlorination is applied to the effluent of a filtration plant, in which case it provides a second line of defense between pollution and the consumer. An important example of such usage is furnished by the Torresdale filtration plant of the city of Philadelphia. Disinfection Versus Filtration The general introduction of disinfection for public water supplies has led to some differences of opinion among engineers as…

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