High-rate settling clarifier with increased turn down capabilities
AssigneeSuez International
InventorsRichard UBALDI, Mark OWENS, Eduardo BERGMAN
Life of this patent
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Abstract
In general, the present invention is directed to a system fort. the treatment of water or wastewater, wherein the system is designed for a maximum flow rate, the system including two or more reactor tanks, the two more reactor tanks each having a capability less than the maximum flow rate, and having a combined capability of achieving or exceeding the maximum flow rate, each reactor tank being fluidically connected to a clarification tank, the reactor tanks receiving an influent, and outputting an effluent; and a clarification tank designed to achieve or exceed, the maximum flow rate, the clarification tank receiving the effluent from the two or more reactor tanks.
Claims11
A system for the treatment of water or wastewater, comprising:
- two or more reactor tanks, each reactor tank being fluidically connected to a clarification tank, the reactor tanks each performing the same function of receiving an influent and inducing flocculation in the water or wastewater, and outputting an effluent;
- the clarification tank, said clarification tank receiving the effluent from the two or more reactor tanks, wherein flocs in the water or wastewater settle to the bottom of the clarification tank and thickened sludge and clarified water are removed from the system.
A system for the treatment of water or wastewater, wherein the system is designed for a maximum flow rate, the system comprising:
- two or more reactor tanks, the two or more reactor tanks each having a capability less than the maximum flow rate, and having a combined capability of achieving or exceeding the maximum flow rate, each reactor tank being fluidically connected to a clarification tank, the reactor tanks receiving an influent, and outputting an effluent;
- the clarification tank designed to achieve or exceed the maximum flow rate, the clarification tank receive the effluent from the two or more reactor tanks.
A system for the treatment of waste or wastewater, wherein in the system is designed for a maximum flow rate, the system comprising:
- a coagulation tank in fluid communication with two or more reactor tanks, the coagulation tank providing introduction of a coagulant to the water or wastewater and mixing;
- two or more reactor tanks, the two more reactor tanks each having a capability less than the maximum flow rate, and having a combined capability of achieving or exceeding the maximum flow rate, each reactor tank being fluidically connected to a clarification tank via a transition chute and each reactor tank comprising a means for inducing turbulence to the water or wastewater, the reactor tanks each performing the same function of receiving an influent and inducing flocculation in the water or wastewater and outputting an effluent;
- a clarification tank having a capability to process water or wastewater at or above the maximum flow rate, the clarification tank receiving the effluent from the two or more reactor tanks, wherein flocs in the water or wastewater settle to the bottom of the clarification tank and clarified water is removed from the system, the clarification tank comprising sloping lamella and a floor scraper to thicken flocs that have settled to the bottom of the clarification tank into sludge
- a sludge recirculation conduit configured to recirculate at least some of the sludge from the clarification tank to the two or more reactor tanks.
A method of controlling a system for the treatment of water or wastewater designed for a maximum flow rate, the system comprising two reactor tanks each having a capability less than the maximum flow rate, and having a combined capability of achieving or exceeding the maximum flow rate and a clarification tank having a capability to process water or wastewater at or above the maximum flow rate, the method comprising:
- determining the incoming flow rate of an influent provided to the system;
- upon a determination that the incoming flow rate is less than 50% the maximum flow rate, providing the influent to one reactor tank;
- upon a determination that the incoming flow rate is greater than 50% the maximum flow rate, dividing the influent and providing influent to each of the reactor tanks;
- outputting an effluent from the reactor tank or tanks used to a clarification tank;
- receiving at a clarification tank the effluent from the reactor tank or tanks used and outputting treated water or wastewater and thickened sludge from the system.
Dependencies are inferred from the claim text.