Production of process water using integrated membrane processes
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K. Karakulski
,
M. Gryta
Abstract
Application of ultrafiltration, nanofiltration, reverse osmosis, membrane distillation, and integrated membrane processes for the preparation of process water from natural water or industrial effluents was investigated. A two-stage reverse osmosis plant enabled almost complete removal of solutes from the feed water. High-purity water was prepared using the membrane distillation. However, during this process a rapid membrane fouling and permeate flux decline was observed when the tap water was used as a feed. The precipitation of deposit in the modules was limited by the separation of sparingly soluble salts from the feed water in the nanofiltration. The combined reverse osmosis—membrane distillation process prevented the formation of salt deposits on the membranes employed for the membrane distillation. Ultrafiltration was found to be very effective removing trace amounts of oil from the feed water. Then the ultrafiltration permeate was used for feeding of the remaining membrane modules resulting in the total removal of oil residue contamination. The ultrafiltration allowed producing process water directly from the industrial effluents containing petroleum derivatives.
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© 2006 Institute of Chemistry, Slovak Academy of Sciences
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Artikel in diesem Heft
- Coupled membrane process applied to fruit juice concentration
- Residence time distribution study for the catalytic packing MULTIPAK®
- Prediction of gaseous emissions from industrial stacks using an artificial intelligence method
- Production of process water using integrated membrane processes
- Kinetics of pyrolysis and properties of carbon black from a scrap tire
- Extraction of Re(VII) by neutral and basic extractants
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- Isolation and identification of anthraquinones of Caloplaca cerina and Cassia tora
- Selection of carrier for immobilization of fructosyltransferase from Aureobasidium pullulans
