Class / Patent application number | Description | Number of patent applications / Date published |
210743000 | pH sensing | 16 |
20090032474 | Irrigation Control System - A method for achieving the optimum pH of the water used for irrigation, comprising passing water through a water meter or a pH monitor, which transmits a signal based on the volume of flow of the water or the pH of the water, a pump which receives a signal from the water meter or pH monitor and injects a predetermined amount of an acidic compound into the irrigation water based upon the volume of flow of the water or the pH of the water. | 02-05-2009 |
20090236292 | WASTEWATER TREATMENT SYSTEM AND METHOD OF WASTEWATER TREATMENT - A wastewater treatment system | 09-24-2009 |
20100176065 | Process for treating waste water having low concentrations of metallic contaminants - A process for treating waste water having a low level of metallic contaminants by reducing the toxicity level of metallic contaminants to an acceptable level and subsequently discharging the treated waste water into the environment without removing the treated contaminants. | 07-15-2010 |
20100187185 | pH balancing system - A method and an apparatus for dispensing a pH balancing solution are provided. The apparatus includes a system having a chlorine generator with a power supply coupled to the chlorine generator, the chlorine generator servicing a body of water and chlorinating it. A pH monitoring and balancing unit is provided. The pH monitoring and balancing unit monitors and measures when power is supplied from the power supply to the chlorine generator to produce chlorine and thereby calculates an operational time for the chlorine generator. A pH monitoring and balancing unit controller is also provided, the pH monitoring and balancing unit controller computing an estimated pH level based on the production of the chlorine generator from the operational time measured and then determining if the estimated pH is outside of a desired range, and, if it is outside of the desired range, metering a discrete amount of pH balancing solution based on this estimated pH level to return the pH of the body of water to within the desired range. | 07-29-2010 |
20110210079 | CATALYTIC WET OXIDATION SYSTEMS AND METHODS - A system and method for the treatment of process streams. A catalyst mediates a wet oxidation process at elevated temperatures and pressures for treating at least one undesirable constituent in an aqueous mixture. A catalyst may be selected for its solubility at a detected pH level of the aqueous mixture. Alternatively, a pH level of the aqueous mixture may be adjusted to solubilize a selected catalyst and/or maintain the selected catalyst in a soluble form. A controller in communication with a pH sensor may be configured to generate a control signal to adjust the pH level of the aqueous mixture in response to the pH sensor registering a pH level outside a predetermined pH solubility range for a selected catalyst. | 09-01-2011 |
20120261352 | GREY WATER DIVIDING AND TREATMENT - A grey water dividing and treatment system is provided. A drain system of the grey water dividing and treatment system receives grey water from a grey water producing source. A grey water dividing apparatus of the grey water dividing and treatment system divides the grey water received from the drain system into a number of cells, and determines a contamination level of each of the cells. Grey water treatment tanks of the grey water dividing and treatment system receive the grey water from the grey water dividing apparatus based on the determined contamination level of each of the cells and treat the grey water. | 10-18-2012 |
20120285897 | Apparatus and Method for Maintaining Potable Water - An apparatus for maintaining potable water stored in a tank. The apparatus is automated and self-contained. When fluidly connected to a water storage tank, the apparatus causes continuous circulation of the potable water to prevent contamination resulting from stagnation and stratification. The apparatus also monitors the amount of free chlorine in the potable water, the pH level, and the amount of total dissolved solids (“TDS”). If the potable water contains less than a predetermined amount of free chlorine or if the pH level is less than a predetermined level, the apparatus automatically adds a selective amount of chlorine and/or minerals to the potable water. The apparatus will also filter the potable water to remove suspended solids. | 11-15-2012 |
20130126440 | METHOD AND SYSTEM FOR MANAGING A RESERVOIR OF WATER REQUIRING RECIRCULATION AT TIME INTERVALS - A method of managing a reservoir of water having a recirculating arrangement for recirculating water at frequent time intervals is disclosed. The method includes starting a productive recirculation of water within the reservoir by means of the recirculating pump, and sensing control parameter/s relating to the quality of water that are selected from: a level of disinfectant, a pH level, a water turbidity level, or a biological count level. The productive recirculation of water by the recirculating pump is continued until each sensed control parameter has reached its target level in the water. In a power saving management mode the productive recirculation of water by the recirculating arrangement is stopped when each sensed control parameter has reached its target level. Instead in a minimum run time mode the productive recirculation is only stopped when this minimum run time has been completed and each sensed control parameter has reached its target level. A management system for installation on a reservoir to carry out the method is also disclosed. | 05-23-2013 |
20130161265 | SYSTEMS AND METHODS FOR MONITORING AND CONTROLLING CORROSION IN HOT WATER SYSTEMS - Disclosed are systems and methods for monitoring and controlling a real-time oxidation-reduction potential in a hot water system to inhibit corrosion in the hot water system. The method includes defining one or more operational protective zones in the hot water system. One or more of the operational protective zones includes an oxidation-reduction potential probe that is operable to measure a real-time oxidation-reduction potential in the hot water system at operating temperature and pressure. The probe transmits the measured real-time potential to the controller, which assesses and interprets the transmitted potential to determine whether it conforms to an oxidation-reduction potential setting. If the measured potential does not conform the oxidation-reduction potential setting, the controller is operable to feed or remove one or more active chemical species into or from the hot water system and further operable to change at least one system parameter. | 06-27-2013 |
20130193080 | METHOD FOR MANAGING THE REVERSAL FREQUENCY OF AN ELECTROCHEMICAL REACTOR - The method for managing the polarity-reversal frequency of at least one pair of electrodes in an electrochemical reactor for water electrolysis includes observing a fluctuation in the hydrogen potential (pH) of the water, while carrying out a comparison of the pH measured at a given moment with a previous measurement or a predetermined initial value. An amount of treatment agent is injected into the water to adjust the pH to around a defined set point. The polarity-reversal frequency of electrodes is calculated on the basis of the temperature of the water, the pH fluctuation and amount of agent injected. The method includes estimating the total alkali strength on the basis of the injected amount and the pH fluctuation, anticipating the fluctuations in the pH relative to the preceding estimations, and readjusting complete alkalinity titration estimate and calculation of the polarity-reversal frequency. | 08-01-2013 |
20130306571 | CONTROLLING FROTH FLOTATION - A method of controlling a froth flotation cell in a froth flotation circuit for separating substances comprises periodically carrying out a control routine to maximise froth stability during the operation of the cell. The control routine comprises changing the gas flow rate to the cell in a series of steps and assessing the froth stability at each gas flow rate and continuing the step changes in the gas flow rate until the froth stability is a peak froth stability or is within a predetermined range of the peak froth stability of the cell. | 11-21-2013 |
20130341285 | ASSURING THRESHOLD OZONE CONCENTRATION IN WATER DELIVERED TO AN EXIT POINT - A system delivers water with at least a threshold concentration of ozone to an exit point. Ozone is injected into water flowing into a tank. The ozone concentration in the tank is monitored by a first sensor. Once the water in the tank has at least the threshold concentration of ozone, the water may be pumped to an exit point. A second sensor in proximity to the exit point monitors the ozone concentration of the treated water in proximity to the exit point. If the water in proximity to the exit point has at least the threshold concentration of ozone, the system allows a portion of the treated water to exit the system to a point of use. The second sensor in proximity to the exit point assures the treated water that is actually delivered to the exit point has at least the threshold value of ozone concentration. | 12-26-2013 |
20140054235 | METHOD AND DEVICE FOR CLEANING WASTEWATER - The invention relates to a method and to a device for cleaning wastewater, in particular organically polluted wastewater, by means of adding a nitrate source, the method comprising the following steps: filling the wastewater in a container until a first fill level (Niv A) of the reactor is reached, wherein the fill level (Niv A) is 80-99%, preferably 95%, mixing the waste water, measuring the pH value of the wastewater, wherein lye is added to the wastewater if the wastewater has a pH value of <7.0 until a pH value of 7.5 is reached, adding nitrate to the wastewater, stirring the wastewater-nitrate mixture, controlling the addition of further nitrate and/or further lye by measuring at least one parameter of the wastewater-nitrate mixture, ending the stirring motion, and decanting with clarified water discharge at a second fill level (Niv B), wherein the fill level (Niv B) is 50-70%, preferably 60%. | 02-27-2014 |
20140251924 | TREATMENT OF SPENT CAUSTIC WASTE - Systems and methods are provided for the treatment of caustic wastewater. Specifically, systems and methods are provided for combining refinery spent caustic and ethylene spent caustic solutions and treating the combined spent caustic mixture using a wet air oxidation process. | 09-11-2014 |
20140299552 | DISINFECTING WATER USED IN A FRACTURING OPERATION - A process for disinfecting a treatment fluid is disclosed, including the step of admixing an aqueous solution comprising two or more oxidants generated via electrolysis of a salt solution with a treatment fluid. The mixed oxidants may be generated on site, using a containerized system. | 10-09-2014 |
20160009568 | Rainwater Capture System and Method | 01-14-2016 |