Automatic control of biochemical oxygen demand content (bod) of sludge and other products of a waste water treatment system
AssigneeClearCove Systems, Inc.
InventorTerry Wright
Life of this patent
Estimating the term…
Abstract
A method of controlling an enhanced primary treatment (EPT) system that includes an EPT settling tank. A sludge drain discharges a sludge including BOD from the EPT settling tank and a clarified effluent discharge recovers decanted fluid from the EPT settling tank. A controller has at least one computer processor. A sludge sensor is communicatively coupled to the controller. The sludge sensor provides a sludge BOD concentration measurement, or a measurement from which the sludge BOD concentration is calculated. A process algorithm controls the sludge valve to control the discharge of the sludge by gravity or by pumping in response to data from the sludge sensor of the sludge BOD concentration.
Claims7
A method of controlling an enhanced primary treatment (EPT) system comprising the steps of:
- providing an EPT system having an EPT settling tank including a controller running a process algorithm configured to read at least a sludge sensor, and to control at least one of a sludge discharge valve and a sludge discharge pump coupled to said controller;
- measuring by use of said sludge sensor a biochemical oxygen demand content (BOD) concentration of a sludge discharge from a settling tank of said EPT system with a sensor communicatively coupled to a controller;
- and
- controlling by said controller, said at least one of a sludge discharge valve and a sludge discharge pump in response to said BOD concentration of a sludge discharge to automatically maintain a desired BOD concentration of said sludge discharge.
Dependencies are inferred from the claim text.