An air dust removing method, comprising the follow steps: providing an electret element (205) in a position without dust in an electric field when an ionization dust removing electric field has a power-on driving voltage; when the ionization dust removing electric field has no power-on driving voltage, using the electret element (205) to absorb particulate matters in the air.

A method for reducing dust removal electric field couplings, comprising the following steps: selecting a dust removal electric field anode and/or dust removal electric field cathode parameter to reduce a number of electric field couplings. A dust removal electric field anode and/or dust removal electric field cathode size is selected so that the number of electric field couplings is less than or equal to 3. The number of electric field couplings is reduced, electric field energy consumption is low, electric field coupling consumption for an aerosol, water mist, oil mist and loose smooth particulate matter is reduced, and electric field energy is saved

A system for removing dust in air (101) comprises a dust removal system inlet (1011), a dust removal system outlet, and an electric field device (1014). The electric field device (1014) comprises an electric field device inlet (3085), an electric field device outlet (3088), a dust removal electric field cathode (3081), and a dust removal electric field anode (3082). The dust removal electric field cathode (3081) and the dust removal electric field anode (3082) are configured to generate an ionizing dust removal electric field. The electric field device (1014) further comprises an auxiliary electric field unit. The ionizing dust removal electric field comprises a flow channel (3086). The auxiliary electric field unit is configured to generate an auxiliary electric field that is not perpendicular to the flow channel (3086). The system for removing dust in air (101) can effectively remove particles in the air.

An exhaust gas ozone purification method, specifically comprising: enabling a mixing reaction between an ozone stream and an exhaust gas stream, and removing nitric acid from mixed reaction products between the ozone stream and the exhaust gas stream by using an electrocoagulation device. The electrocoagulation device comprises: a first electrode (301) electrifying water spray of nitric acid; and a second electrode (302) applying an attraction force to the electrified water spray. The method can realize the purification of exhaust gas.

An exhaust gas ozone purification method, specifically comprising: enabling a mixing reaction between an ozone stream and an exhaust gas stream, and removing nitric acid from mixed reaction products between the ozone stream and the exhaust gas stream by using an electrocoagulation device. The electrocoagulation device comprises: a first electrode (301) electrifying water spray of nitric acid; and a second electrode (302) applying an attraction force to the electrified water spray. The method can realize the purification of exhaust gas.

Air cleaner assemblies, components, features and methods of assembly and use are described. Example air cleaner assemblies are depicted and described in which a main filter cartridge sealing surface is recessed from an open end of a housing body. An access cover of the housing is configured with a portion extending inwardly to engage a main filter cartridge portion and bias it against the main filter cartridge sealing surface. In selected assemblies, the portion of the access cover extending inwardly toward the main filter cartridge, is a precleaner having flow separator tubes therein.

There is provided a cyclone collector which can securely collect particles from an intake gas and can prevent discharge of a water mist. The cyclone collector 12 includes a container 21, a liquid-film forming section 23 for forming a liquid film 40 in the container 21, a gas inlet 33 provided in a lid 32, and an exhaust pipe 24b. The gas inlet 33 extends downward at an angle with an orthogonal plane 21B perpendicular to the axis 21A of the container 21. The opening 33a of the gas inlet 33 opens in an area at a distance from the liquid film 40. An intake gas is ejected from the gas inlet 33 toward the liquid film 40.

There is provided a cyclone collector which can securely collect particles from an intake gas and can prevent discharge of a water mist. The cyclone collector 12 includes a container 21, a liquid-film forming section 23 for forming a liquid film 40 in the container 21, a gas inlet 33 provided in a lid 32, and an exhaust pipe 24b. The gas inlet 33 extends downward at an angle with an orthogonal plane 21B perpendicular to the axis 21A of the container 21. The opening 33a of the gas inlet 33 opens in an area at a distance from the liquid film 40. An intake gas is ejected from the gas inlet 33 toward the liquid film 40.

An oil separator with a housing, in which is rotatably mounted a rotor containing a drive element, an oil separating element and a shaft for driving the oil separating element of the rotor via the shaft of the rotor around the shaft axis. At least one element of the rotor is seated in such a way that it is displaceable via an actuator element axially from a first inoperative positive to a second operating position.

A system for capturing and monitoring atmospheric polluting agents (1) that includes a protection skeleton (100) that covers and protects the entire system; a power supply module (200) for providing electrical energy to the system; a bioremediation module (300) that captures and bioremediates the polluted gaseous streams that circulate inside it; a control and monitoring module (400), which census and modifies the operation parameters in real time and at least one particle capture unit (500) that gathers the particles that approach the system. The system boosts the restoration of polluted gaseous streams with a certain concentration of some substance that could represent a risk for the health of the people.