A fluid purification system can include a filter comprising photocatalytic material, a light source configured to illuminate the photocatalytic material, and a scattering film configured to scatter light emitted from the light source.

An exhaust gas treatment system, comprising an ozone purification system. The ozone purification system comprises an ozone amount control apparatus (209), used to control an amount of ozone so as to effectively oxidize gas components to be treated in exhaust gas, the ozone amount control apparatus (209) comprising a control unit (2091). By means of the present exhaust gas treatment system, particulate matter can be effectively removed from exhaust gas, and the system features a better exhaust gas purification treatment effect.

The present specification, in some embodiments, describes a personal wear device that direct the flow of air away from a person's face, reducing or blocking the flow of infectious pathogens towards a patient's naso-oral area thus reducing the risk of inhalation of infectious or noxious pathogens. In another embodiment, the present specification describes a personal air management mask system for use by a patient for reducing or preventing exposure to and inhalation of infected aerosol during a medical procedure.

There is provided an apparatus, system and method to treat air and surfaces using light. The apparatus comprises a hollow body having an inlet and outlet for passage of air. Treatment lamps are body mounted for movement between an air treatment position to treat air inside the body and a surface treatment position to treat air/an external surface. When installed in a room environment, the apparatus, via a system controller, operates in an air treatment mode, a surface treatment mode or an off mode. Room sensors (e.g. interlock and presence) communicate with the controller and the controller permits or prevents operation in the surface treatment mode accordingly. If any interlock sensor senses an open position or the presence sensor senses a presence (e.g. motion), operation in the surface mode is prevented. A remote control communicates with the controller to select an operating mode.

A method of air pollution filtration in a vehicle is disclosed. A plurality of purification devices are provided to detect and transmit an inside-device gas detection datum, respectively, for intelligently selecting and controlling the activation of filtering the air pollution in the inner space of the vehicle. An in-car gas exchange system and a connection device are provided. The connection device receives and compares the respective inside-device gas detection datum, and selectively transmits a control instruction to drive the in-car gas exchange system and the purification devices. The movement of the air pollution is accelerated by the gas convention of the in-car gas exchange system, so that the air pollution is directionally moved toward the corresponding one of the purification devices adjacent to the air pollution for filtration. The air pollution in the inner space of the vehicle is filtered rapidly, so as to provide clean, safe and breathable air.

A method for intelligently preventing and handling indoor air pollution is adapted to be implemented in an indoor space and includes providing a cloud processing device to receive and intelligently compare an outdoor gas detection data, an indoor gas detection data, and device gas detection data with each other. Then, the cloud processing device remotely transmits a control signal to the communication relay station and further to an indoor gas exchange system, so that the indoor gas exchange system is capable of intelligently enabling the gas processing device and controlling the operation time of the gas processing device for exchanging a polluted gas in the indoor space with the outdoor gas. Moreover, the gas exchanger can perform purification for the polluted gas at the location of the gas exchanger, thereby allowing the polluted gas in the indoor space to be exchanged into a clean, safe, and breathable gas.

A method of filtering indoor air pollution for filtering air pollutant in an indoor space is disclosed. A plurality of gas processing devices is provided for detecting and filtering air pollutant, and transmitting device inner gas detection data. A connection device is provided for receiving and transmitting the device inner gas detection data to a cloud processing device. The cloud processing device intelligently compares and selects to drive a closest gas processing device to filter the air pollutant and drive the gas processing devices to determine a convection path and generate at least one airflow . The airflow accelerates the movement of the air pollutant along the convection path to move the air pollutant towards the closest processing device adjacent to the air pollutant for filtering, so that the air pollutant in the indoor space can be filtered rapidly to obtain a clean, safe and breathable air condition.

An air treatment system includes a cyclone filter and an electrostatic filtration system. The cyclone filter may include a cyclone chamber, a cyclone chamber inlet configured to receive air including suspended particulates, and a cyclone chamber outlet configured to output treated air toward a respiratory interface, e.g., a mask or face shield. The cyclone filter produces a rotational airflow that removes at least some particulates from the air in the cyclone filter. The electrostatic filtration system is configured to charge the particulates in the cyclone chamber with a first polarity to produce an electrostatic attraction of the particulates to a particulate removal system charged with an opposite second polarity, to remove additional particulates from the cyclone filter. The air treatment system may also include an ultraviolet purification system to deliver ultraviolet radiation (e.g., UVC radiation) to kill, destroy or otherwise affect organic particulates in the air being treated.

A disinfection device including a pipe with a taper, inlet, and outlet; an ultraviolet laser; a beam steering device and a transparent layer. The laser, located at a smaller diameter end of the pipe, projects a laser beam towards a larger diameter end of the pipe. The laser beam projects through and/or off the beam steering device and through the transparent layer at a plurality of angles in a cycle. The beam steering device reflects, refracts and/or deflects the laser beam at angles such that a laser beam profile projects through part or all of an inner profile of any point along the taper in the cycle. The pipe receives a fluid that passes through the pipe. One of the inlet or the outlet is located at the smaller diameter pipe end and the other of the inlet or the outlet is located at the larger diameter pipe end.

A system and related method for air filtration and therapeutic relief are provided. The system includes a base layer, a substrate and a plant medium layer, which can be live, preserved or dormant moss. In some instances, the system also includes one or more netting layers. The system can also include a watering system, or air circulation system, or both.