METHOD AND SYSTEM FOR CONTROLLING CARBON SOURCE FEED TO DENITRIFICATION FILTERS

Title:

METHOD AND SYSTEM FOR CONTROLLING CARBON SOURCE FEED TO DENITRIFICATION FILTERS

Document Type and Number:

WIPO Patent Application WO/2012/112569

Kind Code:

A3

Abstract:

A process for optimizing the carbon feed in a denitrification filter. The process utilizes in-line or off-line measurements of process variables in combination with feed forward and feedback control and increases or decreases the amount of carbon added based on a calculated reset rate determined on a periodic basis. The calculated reset rate may be a percentage of a theoretical value of the necessary carbon feed rate needed to remove the desired amount of nitrate-nitrogen. When the effluent nitrate-nitrogen is at a desired level and no rate change is necessary, the carbon feed rate is set to an average of one or more of the last filter runs. The process may also include a step wherein the carbon addition is increased immediately after backwashing to reestablish the biomass needed to produce the desired effluent in a step to regain process efficiency once that boost reestablishes the biomass.

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Inventors:

VEGSO EUGENE MICHAEL (US)
ZHU IVAN XUETANG (US)

Application Number:

PCT/US2012/025073

Publication Date:

December 27, 2012

Filing Date:

February 14, 2012

Export Citation:

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Assignee:

XYLEM WATER SOLUTIONS ZELIENOPLE LLC (US)
VEGSO EUGENE MICHAEL (US)
ZHU IVAN XUETANG (US)

International Classes:

C02F1/40; C02F1/00; C02F3/00; G06Q50/00

Foreign References:

US20100252499A1	2010-10-07
KR20010073989A	2001-08-04
US5211847A	1993-05-18
KR19990027070A	1999-04-15
KR19980019537A	1998-06-05

Other References: