Use of Improved Membranes in Tertiary Treatment by Reverse OsmosisBishop, H.K., McDonnell Douglas Corporation. Astropower Laboratory, United States. Environmental Protection Agency. Water Quality Office Water Quality Office, Environmental Protection Agency, 1970 - 67 páginas |
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Página 16
... tubular units was collected in 2 - in . diameter polyethylene tubes mounted around the l - in . stainless steel membrane support tubes . These collection tubes were sealed at both ends with a one - hole ( 1 - in . ID ) rubber stopper ...
... tubular units was collected in 2 - in . diameter polyethylene tubes mounted around the l - in . stainless steel membrane support tubes . These collection tubes were sealed at both ends with a one - hole ( 1 - in . ID ) rubber stopper ...
Página 19
... tubular units , each 4-1 / 2 feet long by 0. 86 inches ID , 1.0 inches OD , providing a mem- brane surface area of approximately one square foot per tube . The three types of individual tubular units ( from Sets 1 , 2 and 3 ) were ...
... tubular units , each 4-1 / 2 feet long by 0. 86 inches ID , 1.0 inches OD , providing a mem- brane surface area of approximately one square foot per tube . The three types of individual tubular units ( from Sets 1 , 2 and 3 ) were ...
Página 67
... tubular membranes prepared from transesterified ( modified ) cellulose ... units but showed sufficient promise for further development , ( 3 ) product ... tubular reverse osmosis process . However , further development is needed to ...
... tubular membranes prepared from transesterified ( modified ) cellulose ... units but showed sufficient promise for further development , ( 3 ) product ... tubular reverse osmosis process . However , further development is needed to ...
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30 minutes Adjusted to 77°F available cellulose acetate carbon treated secondary CARBON-TREATED SECONDARY EFFLUENT cellulose acetate membrane chemical oxygen demand Chloride commercially available cellulose concentrated primary effluent concentrated primary feed CONSTITUENTS DURING OPERATION enzyme-active laundry presoak feed tank filter Flushed for 30 gfd(a in-situ regenerable membrane initial levels laundry presoak solution McDonnell Douglas Corporation membrane cleaning MEMBRANE COEFFICIENT membrane reverse osmosis MEMBRANE SET 2a membrane surface membranes on carbon-treated MEMBRANES OPERATED mg/l as CaCO3 modified cellulose acetate OPERATED ON CARBON-TREATED Operated on Primary Percent Percent Percent Removal PERFORMANCE OF MEMBRANE Performance of Tubular prepared from transesterified Primary and Concentrated primary effluent feed product water flux pump regenerable membrane reverse REGENERABLE UNIT REMOVAL OF WASTEWATER reverse osmosis unit salt removal SET 2a OPERATED sponge ball sulfuric acid test results test unit treated secondary effluent Tubular Membrane Set tubular membranes prepared tubular units urea Wastewater Constituents water flux decline