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A platform for research: civil engineering, architecture and urbanism
Experiences With Municipal Diatomite Filters
This joint discussion pertains to diatomite filters on public water supply installations for communities along the Saginaw‐Midland pipeline. To appreciate the special conditions under which diatomite filters have been installed, a brief description of this supply is given which will also establish the perspective for the subsequent presentation of experience and observations. “Experiences in Michigan” by T.L. Vander Velde and C.C. Crumley is based on field inspections and plant operating records for the diatomite plants on the Saginaw‐Midland pipeline, and demonstrates that there is a distinct correlation between raw‐water turbidity and relative length of filter runs. Satisfactory filter runs prevail for raw water turbidities under 5 units, at filter rates under 2 gpm/sq ft. Short filter runs prevail for raw‐water turbidities above 5 units at filter rates between 1 and 2 gpm/sq ft, and result in a significant operating problem. “Experiences in New York,” by G.W. Moore concludes that diatomaceous‐earth filters have advantages under certain limited conditions when the raw water is not heavily polluted, the average turbidity is 10 or less, and the maximum turbidity does not exceed 30 for any appreciable length of time. They should not be approved when treatment of seriously polluted water is considered or where high turbidities may occur. Harry N. Lowe, Jr., follows the article with comments on some of the conclusions presented by the authors.
Experiences With Municipal Diatomite Filters
This joint discussion pertains to diatomite filters on public water supply installations for communities along the Saginaw‐Midland pipeline. To appreciate the special conditions under which diatomite filters have been installed, a brief description of this supply is given which will also establish the perspective for the subsequent presentation of experience and observations. “Experiences in Michigan” by T.L. Vander Velde and C.C. Crumley is based on field inspections and plant operating records for the diatomite plants on the Saginaw‐Midland pipeline, and demonstrates that there is a distinct correlation between raw‐water turbidity and relative length of filter runs. Satisfactory filter runs prevail for raw water turbidities under 5 units, at filter rates under 2 gpm/sq ft. Short filter runs prevail for raw‐water turbidities above 5 units at filter rates between 1 and 2 gpm/sq ft, and result in a significant operating problem. “Experiences in New York,” by G.W. Moore concludes that diatomaceous‐earth filters have advantages under certain limited conditions when the raw water is not heavily polluted, the average turbidity is 10 or less, and the maximum turbidity does not exceed 30 for any appreciable length of time. They should not be approved when treatment of seriously polluted water is considered or where high turbidities may occur. Harry N. Lowe, Jr., follows the article with comments on some of the conclusions presented by the authors.
Experiences With Municipal Diatomite Filters
Journal ‐ American Water Works Association ; 54 ; 1493-1506
1962-12-01
14 pages
Article (Journal)
Electronic Resource
English
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