A ballast water treatment method includes: a step of supplying a sterilizing component to a ballast pipe while taking ballast water into a ballast tank through the ballast pipe; a first measurement step of measuring the concentration of the sterilizing component in the ballast water after the sterilizing component is supplied; a circulation step of returning the ballast water stored in the ballast tank to the ballast pipe through a circulation pipe; a second measurement step of measuring the concentration of the sterilizing component contained in the ballast water returned to the ballast pipe; and a step of supplying the sterilizing component to the ballast pipe 2 when the concentration of the sterilizing component measured in the second measurement step is less than 0.2 times the concentration of the sterilizing component measured in the first measurement step. In the first supply step, the sterilizing component is supplied to the ballast pipe 2 such that the concentration of the sterilizing component measured in the first measurement step becomes 6 mg/L or more.

The present invention describes an automated, transportable and energy-efficient with a hybrid power capacity wastewater treatment facility that allows for the disinfection of contaminated sanitation wastewater in order to preserve the environment and provide a greater availability of this resource and its reuse. The facility described in the present invention allows to carry out a process for water treatment in five stages based in equalization, oxidation sedimentation, disinfection and filtration. Moreover, it has a photovoltaic feeding system and a night lighting system that allows the operation of the facility in a hybrid way during the day and the night, as well as a structure that allows its easy transportation. Finally, the facility has an automated system comprised by a control panel that allows to manage and monitor every operational condition of it, that integrates and sends all processed programmable information to a programmable logic controller.

A system for signaling and/or displaying a depletion condition of a filter cartridge in a water treatment device by means of filtration with replaceable cartridges. The filter cartridge including an identification code which identifies the cartridge and which can be read by means of an optical reader of a portable electronic device. The portable electronic device includes a programmable control interface which can be displayed on a screen of the portable electronic device, by means of which it is possible to acquire identification data of the cartridge, to modify one or more predefined or previously imposed parameters in relation to the conditions of use of the cartridge, and to display the effective duration of the cartridge.

A system and method are disclosed which significantly improves the control of conductivity, concentration of free residual chlorine, basin level, and pH in forced-draft open recirculating cooling towers, with a basin capacity of 750,000 gallons of water or more. Conductivity, free residual chlorine, basin level, and pH are each controlled by a programmable PID controller operating in a sampled-data environment where the set point is a continuously updated rate-of-change set value for conductivity, free residual chlorine, basin level, and pH based on a near-time prior manipulated value. Programmable PID controller outputs to each control element a manipulated value to bring the rate-of-change of the process value equal to the rate-of-change of the set value.

Embodiments of the invention provide a method, system and computer program product for automated sampling, testing and treating large water basins. In an embodiment of the invention, the method includes storing a plurality of locations of a water basin, where each location includes at least one chemical delivery outlet. The method further includes monitoring water quality for each of the plurality of locations and mapping a water quality value to each of the locations. The method even further includes responsive to the water quality value failing to meet a threshold value in one of the locations, automatically determining an amount of chemical based on the water quality value and delivering the amount of chemical only to the one of the locations through its corresponding chemical delivery outlet.

A system and method for controlling the accelerated remediation of the water of an aquatic facility using at least one sanitizer sensor, a pH sensor, a temperature sensor and a chlorine dioxide sensor all interfaced with a programmable controller that is programmed to implement a remediation cycle and configured to calculate a Ct value of the water chemical feed system. The programmable controller activates a chemical feed system to supply an acid, an oxidizer and a chlorite ion donor to a conduit to form chlorine dioxide that is supplied to the water until a desire Ct value is reached.

A sensor control system of a food processing system includes a logic processor operatively coupled to an electrode. The logic processor is configured to receive a sensor signal from the electrode, the electrode configured to collect the sensor signal from water used within the food processing system, process the sensor signal to determine a chemical measurement of the water, and generate an electrochemical cleaning control signal for the electrode to interact with the water to electrochemically clean the electrode based upon a user input signal.

The purpose of the present invention is to effectively reduce the corrosion fatigue of an evaporating tube in a boiler which occurs in association with a corrosive environment or repeated application of stress due to the presence of scales. A method for reducing the corrosion fatigue of an evaporating tube in a boiler, in which each of the concentration of chloride ions and the concentration of sulfate ions in the boiler water is managed at 10 mg/L or less. It is preferred to manage each of the concentration of chloride ions and the concentration of sulfate ions in boiler water by subjecting boiler feed water to a desalination treatment with an ion exchange device, a reverse osmosis membrane device or an electrodeionization device or by increasing the collection rate of boiler condensed water.

The present invention relates to a method for disinfection and/or function control of a chlorine sensor, which is preferably used in water conditioning for medical or pharmaceutical purposes, a chlorine-containing solution different from the measurement solution being specifically supplied to the chlorine sensor at time intervals.

The present invention is directed to an electrochemical device for at least partially removing or reducing a target ionic species from an aqueous solution using faradic immobilization, the electrochemical device including at least one first electrode and at least one second electrode with different void fraction and surface area properties, due to differences in void fraction (also referred to as void ratio) of the at least one first and the at least one second electrode, water flows through an electrode with a high porosity, while the aqueous solution does not flow through an electrode with a low porosity. The asymmetry of the electrodes provides a desired voltage distribution across the device, which equates to a different voltage at each electrode, to control the speciation of the target ionic species at the anode and the cathode.