A gas treatment apparatus for treating nitrogen oxide exhaust using ozone includes an ozone generator; a mass flow controller, controlling the gas flow amount flowing to the ozone generator; a reaction chamber; and a neutralizing chamber, provided with a third gas inlet and a fourth gas outlet. The reaction chamber includes an ozone inlet located on the side of the reaction chamber, an ozone sprayer installed inside the reaction chamber and connected to the ozone inlet, an exhaust gas inlet located on the top surface of the reaction chamber away from the center, an exhaust gas inlet tube and a third gas outlet. The exhaust gas inlet tube is provided with a connecting end and an inclined end. The inclined end and the exhaust gas inlet are connected to the outer side of the top of the reaction chamber.

An ozone purification catalyst, and a preparation method therefor and an application thereof are provided. The catalyst coating uses macroporous, high specific surface and CeO.sub.2 and/or La.sub.2O.sub.3 modified Al.sub.2O.sub.3 as the carrier material, and Mn and/or Pd as the active component. The preparation method is to prepare the Al.sub.2O.sub.3-based material by a sol-gel method, and then to load the active components on the carrier material, and to dry, calcinate and solidify to obtain the ozone purification catalyst. The catalysts as prepared shows a fast and efficient purification of ozone. The complete conversion temperature covers a wide range of temperature. The catalyst has excellent texture performance, high specific surface area and large pore volume, which is beneficial to ozone purification when the car is running at high speed. The particle sizes and colors of the catalyst can be modified according to various requirements. According to the actual application, it can be coated on the radiator fins of automobile water tanks, and any place where coating is allowed in public areas such as urban bus stations, stop signs, kiosks, roadside guardrails, or exterior walls of buildings that is in contact with outdoor air.

A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate/coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate/coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone. The air filtration system may comprise a fuel tank inerting system (FTIS) filter assembly. The FTIS filter assembly may include a binderless media (no binder) suitable for use in high temperatures. The FTIS filter assembly includes a catalytic converter configured to adsorb one or more VOCs, such as Toluene, Propylene Glycol (C.sub.3H.sub.8O.sub.2), Pentanoic Acid, Butane (C.sub.4H.sub.10), Formaldehyde (CH.sub.2O), and Carbon Dioxide (CO.sub.2).

In certain exemplary embodiments, an air purifier comprises a housing defining an enclosure and having an air entrance and an air exit; a particulate filter; a NCCO filter material configured to adsorb and decompose at least one gaseous pollutant; an AOG configured to generate at least one oxidant; an oxidant remover configured to remove at least one oxidant; a fan unit configured to generate airflow from the air entrance to the air exit; wherein the particulate filter, the NCCO filter material, the AOG, the oxidant remover and the fan unit are positioned within the enclosure such that during operation, a flow of air passes from the air entrance to the air exit through the particulate filter and the NCCO filter material along a direction of the flow of air. In certain embodiments, the air purifier may ensure safety to users while efficiency in removing contaminants can be greatly improved.

The present invention relates to a system and method for treating air and water in refrigerated spaces using ozone-based disinfection. The system includes an electrolytic ozone generator configured to produce gaseous ozone from water and an air circulation subsystem to create an oxidizing airflow within a housing. The airflow is directed across a titanium dioxide-coated surface to reduce ozone concentration before reentry into the refrigerated space. A controller manages disinfection and purification modes, enabling safe air treatment in environments such as ice machines, walk-in refrigerators, and consumer appliances. In some embodiments, aqueous ozone is also routed to ice makers or water dispensers for waterline disinfection. Optional features include manganese dioxide treatment modules for hydroxyl radical generation, automated door locking during disinfection, and ozone sensors for safety compliance. The invention enables programmable, sensor-driven, and safe disinfection cycles without requiring external ozone emission, supporting food safety and occupant protection.

The present invention relates to a modular ozone-based disinfection system and method for treating air using configurable components tailored to specific applications. The system includes a purification configuration with an air circulation subsystem and an electrolytic ozone generator supplied by a tank configuration, which may comprise a fixed tank or a replaceable water cartridge. The generated ozone is mixed with airflow to create an oxidizing environment and is subsequently passed across a titanium dioxide-coated surface to reduce ozone levels before discharge. Optional modules include a dehumidifier configuration for extracting ambient moisture and a source water configuration for continuous supply. A controller manages system functions, including ozone generation, purification modes, and safety protocols. The method supports flexible operation, enabling safe, effective disinfection in occupied or confined spaces. The modular design allows for scalable deployment across diverse environments, including healthcare, food service, and public facilities.

An electrostatic air cleaner may be operated according to a manner designed to achieve acceptable air quality while balancing power usage and corona electrode degradation levels. The voltage applied to the corona electrode(s) may be controlled as well as the voltage applied to repelling electrodes and air flow velocity. The air cleaner may also be operated to achieve desired particle separation.

The present invention relates to a modular ozone-based disinfection system and method for treating air using configurable components tailored to specific applications. The system includes a purification configuration with an air circulation subsystem and an electrolytic ozone generator supplied by a tank configuration, which may comprise a fixed tank or a replaceable water cartridge. The generated ozone is mixed with airflow to create an oxidizing environment and is subsequently passed across a titanium dioxide-coated surface to reduce ozone levels before discharge. Optional modules include a dehumidifier configuration for extracting ambient moisture and a source water configuration for continuous supply. A controller manages system functions, including ozone generation, purification modes, and safety protocols. The method supports flexible operation, enabling safe, effective disinfection in occupied or confined spaces. The modular design allows for scalable deployment across diverse environments, including healthcare, food service, and public facilities.

An air purifier includes a hollow reactor extending in one direction, a discharge plasma generator including a first electrode disposed on an outer wall of the reactor and a second electrode which is disposed inside the reactor and generates discharge plasma in a predetermined discharge region, a plurality of dielectric particles disposed in a packed-bed of the reactor, and a liquid supply unit which supplies fine droplets into the inside of the reactor.

A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate/coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate/coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone. The air filtration system may comprise a fuel tank inerting system (FTIS) filter assembly. The FTIS filter assembly may include a binderless media (no binder) suitable for use in high temperatures. The FTIS filter assembly includes a catalytic converter configured to adsorb one or more VOCs.