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Membranverfahren in der Umwelttechnik

1987; Wiley; Volume: 59; Issue: 3 Linguagem: Inglês

10.1002/cite.330590303

1522-2640

Robert Rautenbach, Ingo Janisch,

Membrane-based Ion Separation Techniques

Abstract Membrane processes in environmental protection . Reverse osmosis and ultrafiltration are well established processes in areas like the production of fresh water from sea‐ or brackish water and the treatment of spent cutting emulsions from the metal working industry. New and interesting applications of these processes can be expected in environmental protection and in the treatment of process effluents. For reverse osmosis, the capacities of presently available membranes will be discussed with respect to chemical resistance and to the rejection of organic components in aqueous solutions. Results of experiments with various real‐life systems will be reported: landfill drainage water; protein‐rich process water of the fish industry; recovery of ε‐caprolactam; solvent‐contaminated waste water. These examples demonstrate the economical and engineering potential of membrane processes in treating process effluents. These examples also demonstrate that, in most cases only a combination of membrane processes and a conventional process, like evaporation, will give optimal results.