An air purification device (100) comprising a housing (102) defining an air inlet (110), an air outlet (112), and an airflow pathway (114) extending from the air inlet (110) to the air outlet (112); a liquid reservoir (130) disposed across the airflow pathway (114) between the air inlet (110) and the air outlet (112); an ultraviolet (UV) light source (210) disposed in the housing (102), wherein the UV light source (210) is positioned to emit UV light into the airflow pathway (114); and an electrostatic precipitator (310) disposed across the airflow pathway (114).

An air purification device (100) comprising a housing (102) defining an air inlet (110), an air outlet (112), and an airflow pathway (114) extending from the air inlet (110) to the air outlet (112); a liquid reservoir (130) disposed across the airflow pathway (114) between the air inlet (110) and the air outlet (112); an ultraviolet (UV) light source (210) disposed in the housing (102), wherein the UV light source (210) is positioned to emit UV light into the airflow pathway (114); and an electrostatic precipitator (310) disposed across the airflow pathway (114).

Provided is a solvent separation method and a solvent separation apparatus that make it possible to efficiently retrieve the thermal energy possessed by an exhaust atmosphere released in a solvent-removal step to suppress reductions in a temperature of the exhaust atmosphere. In the solvent separation method and the solvent separation apparatus, a vaporized solvent is removed from a gas while heat-exchange between the gas within a condensation part and the gas within a dust-collection part is conducted by using a heat exchange part that is placed between the condensation part that introduces the gas into a first direction and the dust-collection part that introduce the gas into a second direction opposite to the first direction the gas discharged from a downstream side of the condensation part.

Provided is a solvent separation method and a solvent separation apparatus that make it possible to efficiently retrieve the thermal energy possessed by an exhaust atmosphere released in a solvent-removal step to suppress reductions in a temperature of the exhaust atmosphere. In the solvent separation method and the solvent separation apparatus, a vaporized solvent is removed from a gas while heat-exchange between the gas within a condensation part and the gas within a dust-collection part is conducted by using a heat exchange part that is placed between the condensation part that introduces the gas into a first direction and the dust-collection part that introduce the gas into a second direction opposite to the first direction the gas discharged from a downstream side of the condensation part.

An exhaust treatment system includes a dust-removal system. The dust-removal system has an electric field device (1021) and an exhaust cooling device. The electric field device (1021) includes an inlet of the electric field device, an outlet of the electric field device, a dust-removal electric field cathode (10212), and a dust-removal electric field anode (10211), the dust-removal electric field cathode (10212) and the dust-removal electric field anode (10211) being used for generating an ionization dust-removal electric field. The exhaust cooling device is used for reducing an exhaust temperature before the inlet of the electric field device. An exhaust dust-removal system facilitates to reduce greenhouse gas emission, and also facilitates to reduce hazardous gas and pollutant emission, so that gas emission is more environment-friendly.

Provided are a solvent separation method, a solvent separation apparatus, and a solvent separation system that make it possible to easily collect a solvent removed from an exhaust atmosphere and that sake it possible to easily carry out maintenance of exhaust gas pathways. An impeller placed in a storage space of a casing is rotated to introduce a gas including a volatilized solvent from an inlet of the casing into the storage space, and the volatilized solvent is cooled and devolatilized by a collection face that has been cooled so as to have a surface temperature lower than the temperature of the gas, to thereby separate the solvent from the gas.

Provided are a solvent separation method, a solvent separation apparatus, and a solvent separation system that make it possible to easily collect a solvent removed from an exhaust atmosphere and that sake it possible to easily carry out maintenance of exhaust gas pathways. An impeller placed in a storage space of a casing is rotated to introduce a gas including a volatilized solvent from an inlet of the casing into the storage space, and the volatilized solvent is cooled and devolatilized by a collection face that has been cooled so as to have a surface temperature lower than the temperature of the gas, to thereby separate the solvent from the gas.

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.

An engine exhaust gas dust-removal system and method. The engine exhaust gas dust-removal system comprises an exhaust gas dust-removal system inlet, an exhaust gas dust-removal system outlet, and an exhaust gas electric field device The engine exhaust gas dust-removal system has a better dust-removal effect, and can effectively remove particulate matters in engine exhaust gas.

A product removing method of introducing an atmospheric gas into a product remover including a corona discharge space to remove a product from the atmospheric gas, the product being generated inside a processing chamber under a low oxygen atmosphere, the method including: mixing the atmospheric gas with a high electric resistance gas to generate a mixed gas in a pipe or the corona discharge space, the pipe being connected between the processing chamber and the corona discharge space, the atmospheric gas being discharged from the processing chamber via the pipe, the high electric resistance gas having an electric resistance higher than an electric resistance of the atmospheric gas; and removing the product from the mixed gas by a corona discharge method in the corona discharge space into which the mixed gas is introduced via the pipe or in which the mixed gas is generated.