Wastewater treatment apparatus
AssigneeEnvirex Inc.
InventorsCharles R. Hlavach, Keith A. Bergemann
Life of this patent
Estimating the term…
Abstract
Disclosed herein is a wastewater treatment facility comprising a structure defining first and second tank portions; a shaft rotatably supported by the structure; a first biological reactor in the first tank portion and including a first rotatable biological contactor mounted to the shaft and having a diameter; and a second biological reactor in the second tank portion and including a second rotatable biological contactor mounted to the shaft and having a diameter greater than the diameter of the first rotating biological contactor.
Claims20
A wastewater treatment facility comprising:
- a structure defining first and second tank portions;
- a shaft rotatably supported by said structure;
- a first biological reactor in said first tank portion and including a first rotatable biological contactor supported by said shaft and having a diameter;
- a second biological reactor in said second tank portion and including a second rotatable biological contactor supported by said shaft and having a diameter greater than the diameter of said first rotating biological contactor;
- means for providing a wastewater level in said first biological reactor such that said first rotatable biological contactor is completely submerged in wastewater;
- and
- means for providing a wastewater level in said second biological reactor such that said second rotatable biological contactor is only partially submerged in wastewater.
A wastewater treatment facility comprising:
- a structure defining first and second tank portions each adapted to house wastewater;
- a shaft rotatably supported by said structure;
- a first biological reactor including a first rotatable biological contactor in said first tank portion, mounted to said shaft for rotation with said shaft, and having a diameter;
- means for providing a first oxygen content in said first biological reactor;
- a second biological reactor including a second rotatable biological contactor in said second tank portion, mounted to said shaft for rotation with said shaft and having a diameter greater than the diameter of said first rotating biological contactor;
- means for providing a second oxygen content in said second biological reactor, said second oxygen content being greater than the first oxygen content;
- means for causing wastewater to flow primarily in the direction from said second reactor to said first reactor;
- and
- means for providing soluble carbon upstream of said first reactor.
A wastewater treatment facility comprising:
- a shaft;
- an anaerobic biological reactor including a first tank portion and a first rotatable biological contactor, in said first tank portion, mounted to said shaft for rotation with said shaft and having a diameter;
- an aerobic biological reactor including a second tank portion, integral with said first tank portion, and a second rotatable biological contactor, in said second tank portion, mounted to said shaft for rotation with said shaft and having a diameter greater than the diameter of said first rotating biological contactor, said shaft being rotatably supported by said first and second tank portions;
- means for causing wastewater to flow primarily in the direction from said anaerobic biological reactor to said aerobic biological reactor;
- and
- means for providing a recycle stream from downstream of said aerobic biological reactor to upstream of said anaerobic biological reactor.
Dependencies are inferred from the claim text.