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 20
... returned to the feed tank while the product water was again allowed to go to drain , This allowed the feed to become more more concentrated as the product water was removed , No blow- down of the feed tank was allowed until the total ...
... returned to the feed tank while the product water was again allowed to go to drain , This allowed the feed to become more more concentrated as the product water was removed , No blow- down of the feed tank was allowed until the total ...
Página 59
... ( 7.1 g / 1 ) . pH 9. 2 . ( c ) Feed recycled . ( d ) Flushed for 30 minutes with a 6M solution of urea adjusted to pH 5 . · ( e ) Returned to one - pass flow . Table CIV PERFORMANCE OF TUBULAR MEMBRANE SET 2a OPERATED ON 59.
... ( 7.1 g / 1 ) . pH 9. 2 . ( c ) Feed recycled . ( d ) Flushed for 30 minutes with a 6M solution of urea adjusted to pH 5 . · ( e ) Returned to one - pass flow . Table CIV PERFORMANCE OF TUBULAR MEMBRANE SET 2a OPERATED ON 59.
Página 60
... water ( 7.1 g / l ) , pH 9. 2 . ( c ) Feed recycled . ( d ) Flushed for 30 minutes with a 6M solution of urea adjusted to pH 5 . ( e ) Returned to one - pass flow . Table CV PERFORMANCE OF TUBULAR MEMBRANE SET 3a OPERATED ON 60.
... water ( 7.1 g / l ) , pH 9. 2 . ( c ) Feed recycled . ( d ) Flushed for 30 minutes with a 6M solution of urea adjusted to pH 5 . ( e ) Returned to one - pass flow . Table CV PERFORMANCE OF TUBULAR MEMBRANE SET 3a OPERATED ON 60.
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