Liquid purification or separation – Recirculation
Reexamination Certificate
2007-01-05
2008-10-28
Barry, Chester T. (Department: 1797)
Liquid purification or separation
Recirculation
C210S256000, C210S926000
Reexamination Certificate
active
07442298
ABSTRACT:
A high denitrification shared type Orbal oxidation ditch, pertaining to water treatment technical field, comprises an outer channel, a median channel, an inner channel, all of ellipse, and a secondary deposition tank. Wherein, the length of the outer channel is prolonged in the ellipse's major axis direction and the secondary deposition tank that is tangential to the inner wall or shares the wall with the outer channel is arranged between the outer and median channels. All the channels (the outer channel, the median channel and the inner channel) and the secondary deposition tank are integrated in the Orbal oxidation ditch, all of the anaerobic zone, regulation zone, hydrolysis acidifying zone, primary deposition zone, sludge outer re-circulation zone and wastewater inner re-circulation zone etc. can also be arranged in other space, in this way, to reduce the area occupied and the investment cost for the entire equipment to the minimum values, prolong the residence time in the oxidation ditch remarkably and make the total denitrification efficiency very high.
REFERENCES:
patent: 4975197 (1990-12-01), Wittmann et al.
patent: 5084167 (1992-01-01), Beard et al.
Barry Chester T.
Global IP Services
Gu Tianhua
Yixing Lingzhi Environmental Co., Ltd.
LandOfFree
High-denitrification shared type orbal oxidation ditch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-denitrification shared type orbal oxidation ditch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-denitrification shared type orbal oxidation ditch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4008536