System for enhancing a wastewater treatment process
AssigneeSiemens Industry, Inc.
InventorsSteven Woodard, Peter G. Marston, Ionel Wechsler
Life of this patent
Estimating the term…
Abstract
A system for enhancing an activated sludge process including at least one biological reactor. A weighting agent impregnation subsystem is coupled to the biological reactor for mixing biological flocs and weighting agent to impregnate the weighting agent into the biological flocs to form weighted biological flocs. A weighting agent recovery subsystem is configured to recover the weighting agent from the weighted biological flocs and reintroducing the recovered weighting agent to the weighting agent impregnation subsystem.
Claims29
A system for enhancing an activated sludge process comprising:
- at least one biological reactor connected to a source of wastewater;
- a weighting agent impregnation subsystem connected to an inlet and an outlet of the biological reactor and comprising a source of a weighting agent;
- and
- a weighting agent recovery subsystem connected to an outlet of the at least one biological reactor and an inlet of the weighting agent impregnation subsystem, the weighting agent recovery subsystem comprising a separator subsystem selected from the group consisting of a shear mill, an ultrasonic separator, a shear mill and a wet drum magnetic separator, a shear mill and a centrifugal separator, an ultrasonic separator and a wet drum magnetic separator, and an ultrasonic separator and a centrifugal separator.
A system for enhancing an activated sludge process comprising:
- at least one biological reactor connected to a source of wastewater;
- a weighting agent impregnation subsystem connected to an inlet and an outlet of the biological reactor and comprising a weighting agent storage tank and a weighting agent feeder subsystem comprising a pneumatic feeder subsystem comprising a porous media disposed on selected areas of an inside of the weighting agent storage tank and an inside of at least one line and configured to control the delivery rate of weighting agent from the weighting agent storage tank to a weighting agent impregnation tank;
- and
- a weighting agent recovery subsystem connected to an outlet of the at least one biological reactor and an inlet of the weighting agent impregnation subsystem.
A system for enhancing an activated sludge process comprising:
- at least one biological reactor connected to a source of wastewater;
- a weighting agent impregnation subsystem connected to an inlet and an outlet of the biological reactor and comprising a source of weighting agent, the weighting agent impregnation subsystem comprising a venturi mixer/eductor;
- and
- a weighting agent recovery subsystem configured to recover the weighting agent from weighted biological flocs and reintroduce the recovered weighting agent to the weighting agent impregnation subsystem.
A system for enhancing an activated sludge process comprising:
- at least one biological reactor connected to a source of wastewater and comprising at least one anoxic zone configured to remove nitrogen from a mixed liquor;
- a weighting agent impregnation subsystem connected to an inlet and an outlet of the biological reactor and comprising a source of a weighting agent;
- and
- a weighting agent recovery subsystem connected to an outlet of the at least one biological reactor and an inlet of the weighting agent impregnation subsystem.
Dependencies are inferred from the claim text.