title: Ceramic membrane ultrafiltration of natural surface water with ultrasound enhanced backwashing.
abstract: Ultrafiltration membrane cleaning with ultrasound enhanced backwashing was investigated with two ceramic membrane systems in parallel. One of them was subjected to ultrasound during backwashing, the other acted as a reference system. The feed water was directly taken from a creek with a sedimentation process as only pre-treatment. The cleaning performance was improved with ultrasound but after 3 weeks of operation damages occurred on the membranes. These effects were studied with online measurements of flux, trans-membrane-pressure and temperature, but also with integrity tests, turbidity measurements and visual examination.
authors.affiliation: Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, D-70569 Stuttgart, Germany.angela.boley@iswa.uni-stuttgart.de
authors.forename: A
authors.initials: A
authors.lastname: Boley
authors.forename: K
authors.initials: K
authors.lastname: Narasimhan
authors.forename: M
authors.initials: M
authors.lastname: Kieninger
authors.forename: W-R
authors.initials: WR
authors.lastname: Müller
mesh_terms: D002516:Ceramics; D004867:Equipment Design; D008422:Materials Testing; D008567:Membranes, Artificial; D009391:Nephelometry and Turbidimetry; D013696:Temperature; D013997:Time Factors; D014462:Ultrafiltration / Q000379:methods*; D014465:Ultrasonics; D014865:Waste Disposal, Fluid / Q000379:methods; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*; D014881:Water Supply
chemical_list: D008567:Membranes, Artificial; D014874:Water Pollutants, Chemical; D014867:Water