This paper discusses the long-term operation of a UF membrane system for drinking water treatment under ‘passive’ (i.e. without backwash, chemical cleaning and permeate pumping) conditions could be sustained over extended periods. Without any sparging, a steady state permeate flux of approximately 2 Lm-2hr-1 could be maintained. Providing infrequent sparging (5 minutes/day) significantly increased the permeate flux that could be sustained (4 Lm-2hr-1). Interrupting the permeate flux (i.e. relaxation) for one hour prior to sparging further increased the sustainable permeate flux to 6 Lm-2hr-1. Results from the present study are currently being field validated in a prototype system that operates using gravity head for permeation, sparging and purging.
This presentation is available to AMTA Members only.
- Pierre Berube, PhD / Patricia Oka / Nesar Khadem / Nafis Jalil
- UBC / Opus Dayton Knight
- AMTA/AWWA Membrane Technology Conference, Long Beach, CA
- AMTA/AWWA Membrane Technology Conference
- Low cost, membrane filtration, small/remote communities, passive operation, ultrafiltration, research