A plasma purification module is described. The plasma purification module includes a first electrode plate, a second electrode plate, at least one long electrode and a catchment element. The first electrode plate is configured to be connected to a first electrode of a power supply. The second electrode plate is disposed over a surface of the first electrode plate, and is configured to be connected to a second electrode of the power supply, in which the second electrode plate has a channel. The long electrode is configured to form a discharge area. The long electrode is disposed on the surface of the first electrode plate and passes through the channel. The long electrode has a tip. The catchment element is disposed adjacent to the tip, and is configured to provide the discharge area with mist or water.

A hydrocarbon adsorbent having high hydrocarbon adsorbing properties even after exposed to a high temperature/high humidity reducing atmosphere, includes a FAU type zeolite having in ESR measurement a spin concentration of a least 1.0 × 10^19 (spins/g) and a ratio of a peak intensity at a magnetic field of at least 260 mT and at most 270 mT to a peak intensity at a magnetic field of at least 300 mT and at most 320 mT of at least 0.25 and at most 0.50 Å and containing bivalent copper. The hydrocarbon adsorbent may be used for a method for adsorbing hydrocarbons to be exposed to a high temperature/high humidity environment, and may be used particularly for a method for adsorbing hydrocarbons in an exhaust gas of an internal combustion engine, such as an automobile exhaust gas.

A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Jr and Pt.

A sterilization air conditioner is provided in this disclosure, which includes an indoor unit and a sterilization device. The sterilization device is arranged on the indoor unit, and the sterilization device is configured for sterilizing the air entering the indoor unit and a body of the indoor unit by releasing chemical or physical media. In view of a structure of the air conditioner, a front end of a filter screen of the air conditioner is equipped with a disinfectant dripping, drenching, sprinkling, spraying or atomizing or a plasma or ultraviolet or electrostatic negative oxygen ion sterilization device, and disinfectant or plasma or ultraviolet or negative oxygen ion is sprayed to the air conditioner for sterilization. The disclosure has advantages of simplicity, convenience and low investment, and is more suitable for sterilization of household split air conditioners and central air-conditioning fan-coil air conditioners.

An axial extension part is proposed which makes it possible to use a filter cartridge (25) of larger axial dimensions than a standard filter cartridge for which the axial depth of a hollow housing (11) of a casing (10) of a selective catalytic reduction (SCR) device has been provided. This makes it possible to have different filtration characteristics without having to modify the casing. The larger filter cartridge (25) can be inserted into the extension part when this part is mounted in the housing (11) of the casing (10). The cartridge is sealed therein when the sealing cap (21) is put in place to close the opening at the rear end of the part.

A portable air filtration apparatus capable of rapid and efficient room air turnover and recirculation of filtered and decontaminated air with eradication of both microorganisms and biological agents. The invention relates to a compact device that can be used in ultra-clean air purification using a multi stage electrostatic precipitation and air filtration with disinfection and eradication of both microorganisms and biological agents by the application of ultraviolet light radiation. It can be used in any application where space, lower cost or ultra-fine particulate filtering is needed; such as in clean rooms and surgical suites. The device is extremely efficient for purifying contaminated air from entrained dust and organic substances without using chemicals and physical filters, and it is hygienic and fireproof. The device including its multi stage electrostatic precipitator with the filter, connecting, releasing tubes and the fan is easy to clean and can be portable.

A deodorization treatment apparatus according to an embodiment of the invention includes a deodorant tank housing microorganism-retaining carriers, supplied with odorous gas, and discharging an exhaust gas in which an odor has been removed by the microorganisms, a water sprinkler device, a water tank, a water sprinkler pipe, an exhaust pipe, a first blower, an aeration device, and a control device controlling at least one of blowing amount of the first blower, watering amount or watering frequency of the water sprinkler device, amount of air bubbles generated in liquid of the aeration device, water supply to the water tank, drainage from the water tank, or temperature of the deodorant tank according to measurement results.

A UVC-integrated LED structure adapted to air sterilization-and-disinfection grilles is provided. The UVC-integrated LED structure includes a housing, an opening disposed at top of the housing, multiple wavy grilles engaged with both sides of inner wall of the opening, placement grooves openly disposed at one side of the wavy grilles, and COB light boards disposed inside the placement grooves. The UVC-integrated LED structure installs the COB light boards at the placement grooves. The structure allows the COB light boards to be hidden on the surfaces of the wavy grilles for decreasing height of the COBs. Therefore, air resistance can be reduced when the ultraviolet ray irradiates on the passing air. The impact of dust being adhered to the COB light boards can be reduced. The air passing through the multiple wavy grilles can be sterilized and disinfected.

Proposed is a pretreatment desulfurization system including a desulfurization agent storage tank for storing a liquid-phase pretreatment desulfurization agent and a metering pump for supplying the liquid-phase pretreatment desulfurization agent from the desulfurization agent storage tank to a fuel supply line through which marine fuel oil is supplied to a marine engine in a predetermined ratio. Since a fluid mixture composed of the marine fuel oil and the pretreatment desulfurization agent is supplied to the marine engine, sulfur oxides are adsorbed and removed during combustion of the fluid mixture.

Disclosed herein is a colony analysis apparatus, which cultures microorganisms collected from food subject to microbial collection on a plurality of Petri substrates and analyzes colors and the number of the cultured microorganisms by image recognition, thereby accurately determining and analyzing the contamination level of the food subject to microbial collection by an average value of the analysis.