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 14
... flux decline coefficient , k , is expressed by J = J exp ( kt ) where J = product water flux in gallons / sq ft - day ( gfd ) Jo = initial product water flux in gfd - 1 k = flux decline coefficient in hours t = time on test in hours The ...
... flux decline coefficient , k , is expressed by J = J exp ( kt ) where J = product water flux in gallons / sq ft - day ( gfd ) Jo = initial product water flux in gfd - 1 k = flux decline coefficient in hours t = time on test in hours The ...
Página 23
... flux upon attainment of specified concentration , k is the flux decline coefficient in hours - 1 and t is expressed in hours of operation at desired wastewater concentration condition . The fluxes were converted to their logarithms and ...
... flux upon attainment of specified concentration , k is the flux decline coefficient in hours - 1 and t is expressed in hours of operation at desired wastewater concentration condition . The fluxes were converted to their logarithms and ...
Página 42
... indicating that membrane fouling is the most important factor in reducing membrane productivity . FLUX DECLINE With a carbon treated secondary effluent feed and 二 DISCUSSION OF RESULTS Membrane Performance Flux Decline.
... indicating that membrane fouling is the most important factor in reducing membrane productivity . FLUX DECLINE With a carbon treated secondary effluent feed and 二 DISCUSSION OF RESULTS Membrane Performance Flux Decline.
Índice
Section Page | 1 |
MEMBRANE PREPARATION | 7 |
LABORATORY TEST RESULTS | 13 |
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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 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 modified cellulose acetate OPERATED ON CARBON-TREATED Operated on Primary Percent Removal PERFORMANCE OF MEMBRANE Performance of Tubular pH 9 prepared from transesterified Primary and Concentrated primary effluent feed product water flux pump regenerable membrane reverse REGENERABLE UNIT REMOVAL OF WASTEWATER Removal Removal reverse osmosis unit salt removal SET 2a OPERATED sponge ball sulfuric acid Table test results test unit Total Solids treated secondary effluent Tubular Membrane Set tubular membranes prepared tubular units urea Wastewater Constituents water flux decline