Purification of the Washington Water Supply (Classic Reprint)
1kg Limited, Jul 27, 2015 - 262 pages
Excerpt from Purification of the Washington Water Supply
After a very long and careful investigation, the report from the War Department, known as Colonel Miller's report, took the ground that the water supply Of the District of Columbia contained suspended clay in such fine particles as to make it practically impossible to use the slow sand system of filtration, and he, therefore, recommended the adoption of the rapid, or mechanical, system of filtration.
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