PULSE AERATION FOR IMMERSED MEMBRANES
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United States of America Patent
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N/A
Issued Date -
Jan 17, 2013
app pub date -
Jul 13, 2011
filing date -
Jul 13, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An assembly of modules on the order of a cassette or larger are aerated simultaneously in a series of air-on or high flow rate periods, each in the range of 0.5 to 20 seconds long, separated by longer air-off or low flow rate periods, each in the range of 5 to 40 seconds long. A plurality of aerators located in association with a plurality of modules are provided with a burst of air simultaneously from a shared air accumulator or pulsator connected to all of the aerators. The air accumulator or pulsator may be fed with a continuous supply of air. The plurality of modules may be connected together in a cassette or rack. The accumulator or pulsator may be located outside of a tank of water containing the membranes.
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