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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... stage units in parallel . However , detention time in each of the two 2 - stage units was the same as in the four - stage consecutive series operation , thus carbon effluent quality was approximately equivalent . Carbon effluents from ...
... stage units in parallel . However , detention time in each of the two 2 - stage units was the same as in the four - stage consecutive series operation , thus carbon effluent quality was approximately equivalent . Carbon effluents from ...
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... Stage II . Stage I and Stage II correspond approximately to the period of primary and concentrated primary feed respectively . Although recycling of the feed was instituted during Stage I , higher feed concentrations were not reached ...
... Stage II . Stage I and Stage II correspond approximately to the period of primary and concentrated primary feed respectively . Although recycling of the feed was instituted during Stage I , higher feed concentrations were not reached ...
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... ( Stage I ) ** Flux Decline -0.00057 -0.00042 -0.000129 Coefficient , k , hr - l Slope m * -0.080 -0.101 -0.021 ( Stage II ) *** Average Flux , ( gfd ) 14 17 9 3 ( Stage I ) * Average Flux ( gfd ) 6 6 5 ( Stage II ) ** Average Percent 92 ...
... ( Stage I ) ** Flux Decline -0.00057 -0.00042 -0.000129 Coefficient , k , hr - l Slope m * -0.080 -0.101 -0.021 ( Stage II ) *** Average Flux , ( gfd ) 14 17 9 3 ( Stage I ) * Average Flux ( gfd ) 6 6 5 ( Stage II ) ** Average Percent 92 ...
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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