Back to results
US 10,241,035 B2Granted
Spectrophotometric sensors and methods of using same
AssigneeEvoqua Water Technologies LLC
InventorsDavid Macdonald Bonnick, Michael Brooks
Life of this patent
Estimating the term…
Abstract
Spectrophotometric sensors for measuring the concentration of various solutions are disclosed. Methods for controlling the introduction of disinfectants using such sensors for water treatment are also disclosed. Hypochlorite strength is monitored in at least some embodiments.
Claims16
A spectrophotometric hypochlorite sensor, comprising:
- a first source of monochromatic radiation configured to provide a beam of monochromatic radiation having a wavelength in the range of about 350 nm to 410 nm and configured to produce an emitted light;
- a sample chamber configured and positioned to receive the emitted light and contain a sample comprising hypochlorite through which the emitted light passes to produce a partially absorbed light;
- a detector configured and positioned to receive the partially absorbed light and generate an input signal in response to receiving the partially absorbed light;
- and
- a processor configured to receive the input signal from the detector, correlate the input signal to a hypochlorite concentration of the sample, and generate an output signal indicative of the hypochlorite concentration of the sample.
2 more elements
A method for regulating disinfection of water to be treated, comprising:
- emitting an electromagnetic beam having a first radiant power at a wavelength of about 350 nm to about 410 nm through a sample of disinfectant to produce a partially absorbed electromagnetic beam;
- measuring a second radiant power of the partially absorbed electromagnetic beam;
- calculating a concentration of the disinfectant, based, at least in part, on the first radiant power and the second radiant power;
- and
- adjusting a valve configured to regulate introduction of the disinfectant to the water to be treated based, at least in part, on the calculated disinfectant concentration.
2 more elements
Dependencies are inferred from the claim text.