Ballasted sequencing batch reactor system and method for treating wastewater
AssigneeSiemens Water Technologies Corp.
InventorSteven E. Woodard
Life of this patent
Estimating the term…
Abstract
A ballasted sequencing batch reactor system for treating wastewater including one or more sequencing batch reactors. A weighting agent impregnation subsystem is configured to mix biological flocs and weighting agent to form weighted biological flocs. A weighting agent recovery subsystem is configured to recover weighting agent from the weighted biological flocs and reintroduce the recovered weighting agent to the weighting agent impregnation subsystem.
Claims19
A ballasted sequencing batch reactor system for treating wastewater comprising:
- one or more sequencing batch reactors fluidly connected to a source of wastewater, the one or more sequencing batch reactors comprising a treated effluent outlet and a waste activated sludge outlet;
- a weighting agent impregnation subsystem fluidly connected to a biological flocs outlet of the one or more sequencing batch reactors and comprising a weighted biological flocs outlet fluidly connected to the one or more sequencing batch reactors, the weighting agent impregnation subsystem configured to mix suspended biological flocs and weighting agent to form weighted biological flocs;
- a weighting agent recovery subsystem fluidly connected to the waste activated sludge outlet of the one or more sequencing batch reactors and an inlet of the weighting agent impregnation subsystem, the weighting agent recovery subsystem configured to recover weighting agent from the weighted biological flocs of a waste activated sludge and reintroduce the recovered weighting agent to the weighting agent impregnation subsystem.
A method for treating wastewater using one or more sequencing batch reactors, the method comprising:
- introducing influent wastewater to the one or more sequencing batch reactors to form suspended biological flocs;
- introducing a portion of the suspended biological flocs into a weighting agent impregnation subsystem to impregnate the weighting agent into the suspended biological flocs and to form weighted biological flocs;
- introducing the weighted biological flocs from the weighting agent impregnation subsystem to the one or more sequencing batch reactors;
- and
- introducing at least a portion of a settled sludge comprising settled weighted biological flocs to a weighting agent recovery system to recover weighting agent from the settled weighted biological flocs.
Dependencies are inferred from the claim text.