A method for a water bottle comprising, coupling a cap to bottle housing such that an interior of the water bottle and the cap form a water-tight region, receiving a button push on the cap, determining with a light sensor whether visible light is present in a vicinity of a UV LED light source disposed within the cap, in response to the push of the button, initiating providing with a UV LED light source UV light to the interior in response to the push of the button and in response to absence of the visible light within the vicinity of the UV LED light source, and inhibiting providing with the UV light to the interior after a period of time after the initiating providing UV light to the interior or in response to determining the visible light being present in the vicinity of the UV LED light source.

A system separation device with at least one pressure-proof tank for containing a liquid that forms a predetermined liquid level in the tank, above which level there is a gas cushion. The device contains an inlet in the upper region of the tank for fluidly feeding the tank from a first fluid system, and an outlet in the lower region of the tank for forwarding the liquid to a second fluid system. To prevent the germ-infestation of the inlet, at least one germicide material is arranged in the region of a gas cushion above the liquid level.

The present invention is a water purification system and method including a treatment tank with a water inlet, a chlorine source, and a heating element; at least one storage tank with at least one treated water outlet between the treatment tank and the storage tank(s) through which treated water passes therebetween, and a final water outlet(s) through which treated water leaves the system for the benefit of the end user. A power source powers all elements that require power, such as the heating element.

A UV disinfectant system may include a chamber having a wall that is transparent to a disinfecting radiation. Liquid may be flowed through the chamber for treatment by exposure to the radiation. The chamber may include a static mixer having vanes to impede laminar flow of the liquid during treatment. The vanes extend into the flow path of the liquid through the chamber. A gap is defined between the vanes and the transparent wall. A cabinet may house the chamber and radiation emitting bulbs. Blowers may be operably coupled to a temperature sensor and flow meter and positioned at a lower end and upper end of the cabinet to urge air out of the cabinet. The temperature sensor may include a thermocouple. The blowers may be variable speed blowers. The system may include a controller to control system operations. The controller may be remotely accessible to monitor or control operations.

A water purifier that includes: a water storage tank that includes an interior area and a first opening to the interior area; a cover unit that is configured to cover the first opening and that includes: a frame body that includes a second opening, and a water storage tank cover that is coupled to the frame body and that is configured to rotate about an axis such that the water storage tank cover opens or closes the second opening; a sterilizer that is configured to sterilize water in the water storage tank; a switching module that is configured to control electric power supply to the sterilizer; and an operation member that is configured to control the switching module based on the water storage tank cover being opened or closed is disclosed.

A method for a water bottle comprising, coupling a cap to bottle housing such that an interior of the water bottle and the cap form a water-tight region, receiving a button push on the cap, determining with a light sensor whether visible light is present in a vicinity of a UV LED light source disposed within the cap, in response to the push of the button, initiating providing with a UV LED light source UV light to the interior in response to the push of the button and in response to absence of the visible light within the vicinity of the UV LED light source, and inhibiting providing with the UV light to the interior after a period of time after the initiating providing UV light to the interior or in response to determining the visible light being present in the vicinity of the UV LED light source.

A water purification cap for covering a water bottle is provided. The cap may include a barrel and a shell. The shell may surround a first end of the barrel. The cap may include a charging site. The charging site may be integral to the shell. The charging site may include a positive pole, a negative pole and an RGB ring. The RGB ring may insulate between the positive pole and the negative pole. The RGB ring may display colors that indicate a status of the cap. The cap may include a UV-C LED. The UV-C LED may be proximal to a second end of the barrel. The light emitted from the UV-C LED may be UV-C rays. The UV-C rays may be in the range of 100-280 nanometers. The cap may include a touch sensor. When touched, the touch sensor may activate the UV-C LED.

Disclosed is a method for controlling a chlorinated nitrogen-containing disinfection by-product in water, including the following steps: firstly, the pH value of a water sample is controlled, ultraviolet irradiation treatment is used and a persulfate or hydrogen persulfate is added at the same time, then chlorination disinfection is carried out, and finally, aeration treatment is carried out, so that a water sample from which the chlorinated nitrogen-containing disinfection by-product in water is removed and obtained. The method can effectively control the formation of chlorinated N-DBPs, and can effectively reduce the amount of trichloromethane in the subsequent chlorination disinfection process.

Ultraviolet irradiation of an aquatic environment for the purposes of sterilization, disinfection, and/or cleaning fluids and surfaces associated with the aquatic environment. The aquatic environment can be irradiated using an ultraviolet illuminator having at least one ultraviolet radiation source and at least one sensor to detect conditions of the aquatic environment including fluid conditions and/or surface conditions associated with the aquatic environment. A control unit, operatively coupled to the at least one ultraviolet radiation source and the at least one sensor, determines a presence of algae growth about the aquatic environment. The control unit is further configured to direct the at least one ultraviolet radiation source to irradiate the aquatic environment at locations where there is a presence of algae growth for removal and suppression of further growth, monitor the irradiation with the at least one sensor, and adjust irradiation parameters as a function of detected conditions.

A water purifier that includes: a water storage tank that includes an interior area and a first opening to the interior area; a cover unit that is configured to cover the first opening and that includes: a frame body that includes a second opening, and a water storage tank cover that is coupled to the frame body and that is configured to rotate about an axis such that the water storage tank cover opens or closes the second opening; a sterilizer that is configured to sterilize water in the water storage tank; a switching module that is configured to control electric power supply to the sterilizer; and an operation member that is configured to control the switching module based on the water storage tank cover being opened or closed is disclosed.