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Item Description Dugan, Gordon L. en_US 2008-10-07T02:24:26Z 2008-10-07T02:24:26Z 1983-10 en_US
dc.identifier.citation Dugan GL. 1983. Upgrading municipal effluent by pulsed-bed filtration: Sand Island Wastewater Treatment Plant, Oahu, Hawaii. Honolulu (HI): Water Resources Research Center, University of Hawaii at Manoa. WRRC technical memorandum report, 74. en_US
dc.description.abstract The Hydro Clear pilot plant pulsed-bed filter cell unit (4 ft^2 [0.37 m^3]sand surface area) was operated at the Sand Island Wastewater Treatment Plant from mid-November 1982 to the first part of June 1983. Because of the disruptive events of the influent pump malfunctioning during the first part of the study, the change of the effective sand size from 0.45 mm to 0.65 mm, and the change of the pulse-mix setting from 6 to 12, the study was segregated into five separate periods which ranged from 45 days to nearly 7 days. In terms of continuous time of operation and number of analytical results, the most representative of the five separate study periods is the first of the five periods which covered a period of 45 days and included up to 26 sets of chemical analyses. With an effective sand size of 0.45 mm and pulse-mix setting of 6 before automatic backwashing, the overall average suspended solids removal rate was 57%; the total and filterable BOD5 removal averaged respectively 41% and 42%; and the total filterable COD removal averaged respectively 38% and 27%. The backwash/processed wastewater ratio averaged 18.4%, and the hydraulic loading rate averaged 2.24 gpm/ft^2 (1.522 x 10^(-3) m^3/s/m^2 ). en_US
dc.description.sponsorship Hydro Clear Corporation Avon Lake, Ohio 44012 Grant/Contract No. H990 en_US
dc.format.extent vii + 40 pages en_US
dc.language.iso en-US en_US
dc.publisher Water Resources Research Center, University of Hawaii at Manoa en_US
dc.relation.ispartofseries WRRC Technical Memorandum Report en_US
dc.relation.ispartofseries 74 en_US
dc.subject municipal wastewater en_US
dc.subject filtration en_US
dc.subject sewage treatment en_US
dc.subject biochemical oxygen demand en_US
dc.subject chemical oxygen demand en_US
dc.subject pulsed-bed filter cell unit en_US
dc.subject Hydro Clear en_US
dc.subject Sand Island Wastewater Treatment Plant en_US
dc.subject Oahu en_US
dc.subject Hawaii en_US
dc.subject.lcsh Sand Island (Oahu, Hawaii) en_US
dc.subject.lcsh Sewage -- Purification -- Filtration. en_US
dc.subject.lcsh Sewage -- Purification -- Hawaii -- Oahu. en_US
dc.title WRRCTMR No.74 Upgrading Municipal Effluent by Pulsed-Bed Filtration: Sand Island Wastewater Treatment Plant, Oahu, Hawaii en_US
dc.type Report en_US
dc.type.dcmi Text en_US

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