Ceramic membrane ultrafiltration of natural surface water with ultrasound enhanced backwashing.
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.
Boley
A
A
Institute for Sanitary Engineering, Water Quality and Solid Waste Management, University of Stuttgart, D-70569 Stuttgart, Germany.angela.boley@iswa.uni-stuttgart.de
Narasimhan
K
K
Kieninger
M
M
Müller
W-R
WR
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
D008567:Membranes, Artificial; D014874:Water Pollutants, Chemical; D014867:Water