The Filtration of Public Water-supplies |
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Common terms and phrases
acre daily aeration algæ allowed Altona amount Area of Filters bacterial efficiency Berlin Board of Health built cent cholera cleaning coagulant color construction cost covered filters death-rate diameter Dirty sand drains effective size effluent Engineering epidemic feet filtered water filtering area finer gallons per acre German gravel ground-water Hamburg inches increased intake iron Journal für Gas Lake Lawrence Experiment Station less London loss of head mechanical filters meters millimeter million gallons morocco muddy muddy waters Müggel number of bacteria obtained open filters operation organic matter outlets particles passing Piefke pipe places polluted population pumps pure-water reservoir purification quantity of water rate of filtration raw water regulating removed reservoir water river-waters sand filters Schiedam scraping sediment sediment layer sedimentation-basin sewage sieves Stralau stream sulphate of alumina supply suspended matters Tegel temperature tion turbidity typhoid fever underdrains vaulting washing Wasserversorgung water filtered water-works Zürich