Section through Sand Washing Apparatus Hamburg, Germany

Section through Sand Washing Apparatus Hamburg, Germany from the Article FILTRATION OF MUNICIPAL WATER SUPPLIES. By Rudolph Hering. from The Engineering Magazine DEVOTED TO INDUSTRIAL PROGRESS Volume XI October 1896 NEW YORK The Engineering Magazine Co

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IR_f_industrial-V11_0673.jpg

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PhotoStock-Israel.com

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4850x3224 / 3.4MB

filtration potable MUNICIPAL supply health filtering drinking water supplies sanitation Chemical bacteriological analyses waters bacteria germs disease Reservoir purification treatment utility utilities resource management filter Engineering PROGRESS technology technological Management resource resources 19th century Nineteenth Century history historic development historical economics economic economical 1890s the past innovation innovative science scientific mechanics mechanic mechanical advance advancement innovations design photograph photography psi idr

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