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Tertiary Membrane Filtration under Cold Temperature and High Flow Peaking Conditions: Design Considerations and Pilot Testing Results

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Communities where the water demand and corresponding sewer flows vary drastically over short periods of time due to system constraints, system operation necessitates reliable treatment facilities and alternative water sources under varying conditions. Lake Arrowhead Community Services District (LACSD) is overcoming similar challenges such as physical location of the community, cold weather, extreme flow peaking, mountainous terrain and protected species limiting plant site modifications. Recycled water treatment using advanced technologies with small footprints provides added value for these communities. Following an evaluation of the technology alternatives a comprehensive pilot testing program was undertaken by LACSD for reliable design and operations planning for those facilities. The membrane pilot unit was operated for a 6-month period at this trickling filter facility. The findings showed that a closer look at the system parameters, water quality and biofouling potential is needed at similar facilities, and a conservative design approach can be one of the solutions to meet production capacities.
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Document Type: Research Article

Publication date: 2007-10-01

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