Title:
IMMERSED SCREEN AND METHOD OF OPERATION
Document Type and Number:
WIPO Patent Application WO/2013/085663
Kind Code:
A3
Abstract:
A static screen has a plurality of screening bodies and a plurality of aeration devices downstream of the screening bodies. Each aeration device is associated with a set of one or more of the screening bodies. Each aeration device may be a pulsing aerator. The pulsing aerators do not all release air at the same time. Each screening body works through periods of dead end filtration separated by backwashing events. The backwashing events comprise introducing a slug or pulse of air into the bottom of the screening body. Flow through the static screen continues at all times because the screening bodies are not all backwashed at the same time. The static screen may be used to remove trash from water flowing to an immersed membrane unit. Alternatively, the static screen may be used to provide primary wastewater treatment.
Inventors:
COTE PIERRE LUCIEN (CA)
CUMIN JEFFREY RONALD (CA)
CUMIN JEFFREY RONALD (CA)
Application Number:
PCT/US2012/064117
Publication Date:
December 12, 2013
Filing Date:
November 08, 2012
Export Citation:
Assignee:
GEN ELECTRIC (US)
International Classes:
B01D29/52; C02F3/12; B01D29/66; B01D65/02; B01D65/08; B01F3/04; C02F3/22
Domestic Patent References:
| WO2007131151A2 | 2007-11-15 |
Foreign References:
| US20110100907A1 | 2011-05-05 | |||
| US20100219130A1 | 2010-09-02 | |||
| US20110049047A1 | 2011-03-03 | |||
| DE3711114A1 | 1988-10-13 | |||
| US20070163942A1 | 2007-07-19 |
Attorney, Agent or Firm:
WINTER, Catherine, J. et al. (Global Patent Operation2 Corporate Drive, Suite 64, Shelton CT, US)
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