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US 2020/0369534 A1Published application
Method and System for Controlling Disinfection in Recirculating Water Systems
AssigneeEvoqua Water Technologies LLC
InventorWolfgang Kleiber
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Abstract
The present invention relates to a method and system for controlling disinfection in recirculating water systems and a method for retrofitting a recirculation system.
Claims27
A method for controlling disinfection in a recirculating water system, the method comprising the method steps:
- providing a controller comprising a processor for receiving a plurality of measurement signals of at least one water property sensor;
- determining at least one characteristic value based on the measurement signals from at least one oxidation-reduction potential sensor and at least one free chlorine sensor, said characteristic value based at least in part on a chlorine redox relationship;
- comparing said at least one characteristic value with at least one predetermined threshold value;
- and
- regulating based on a comparison value a water recirculation rate and/or a disinfectant level.
2 more elements
12-13. (canceled)
A system for controlling disinfection in a recirculating water system comprising
- at least two water property sensors comprising an oxidation-reduction potential sensor and a free chlorine sensor;
- a processor configured to determine based on the measurements of the property sensors at least one characteristic value and to compare said at least one characteristic value with one or more predetermined threshold values;
- and;
- a controller configured to regulate based on the comparison value a recirculation rate by means of a flow control device and/or a disinfectant level by means of a disinfecting system.
1 more element
Dependencies are inferred from the claim text.