An engine emission treatment system incudes at least one out of an air inlet dust removal system (101), a tail gas dust removal system (102), and a tail gas ozone purification system. The tail gas dust removal system (102) has an inlet of the tail gas dust removal system, an outlet of the tail gas dust removal system, and a tail gas electric field device (1021). The tail gas ozone purification system has a reaction field (202), used for mixing an ozone stream and a tail gas stream for reaction. The engine emission treatment system may effectively treat engine emissions, so as to make the engine emissions cleaner.

An engine emission treatment system incudes at least one out of an air inlet dust removal system (101), a tail gas dust removal system (102), and a tail gas ozone purification system. The tail gas dust removal system (102) has an inlet of the tail gas dust removal system, an outlet of the tail gas dust removal system, and a tail gas electric field device (1021). The tail gas ozone purification system has a reaction field (202), used for mixing an ozone stream and a tail gas stream for reaction. The engine emission treatment system may effectively treat engine emissions, so as to make the engine emissions cleaner.

The present application provide an air purifier and a cleaning method for same The air purifier includes: a housing, which is provided with an air inlet and an air outlet and a detachable door panel; a protective cover, which is detachably disposed on an inner wall of the housing and opposite to the door panel, and located between the air inlet and the air outlet; and an electrostatic filter element, which includes an emission assembly and a collection assembly, the emission assembly and the collection assembly are detachably disposed in the protective cover, the emission assembly is located at a side of the collection assembly close to the air inlet. The detachable protective cover is provided to facilitate washing and protect the housing. The emission assembly and the collection assembly are detachably mounted in the protective cover, so that they can be separately cleaned.

The present application provide an air purifier and a cleaning method for same The air purifier includes: a housing, which is provided with an air inlet and an air outlet and a detachable door panel; a protective cover, which is detachably disposed on an inner wall of the housing and opposite to the door panel, and located between the air inlet and the air outlet; and an electrostatic filter element, which includes an emission assembly and a collection assembly, the emission assembly and the collection assembly are detachably disposed in the protective cover, the emission assembly is located at a side of the collection assembly close to the air inlet. The detachable protective cover is provided to facilitate washing and protect the housing. The emission assembly and the collection assembly are detachably mounted in the protective cover, so that they can be separately cleaned.

A personal protective apparatus, having a wearable support member and a mesh shield securable thereto. The mesh shield may include first and second air-permeable conductive layers secured to the wearable support member and a first air-permeable non-conductive layer received between the first and second air-permeable conductive layers to separate them, and a portable power supply coupled to the mesh shield with a negative high voltage lead to the first air-permeable conductive layer and a positive high voltage lead to the second air-permeable conductive layer. The mesh shield may be a flexible mesh shield, and include at least one air-permeable layer secured at a first layer upper end to the wearable support member to hang from the wearable support member, the at least one air-permeable layer including at least one of an anti-virus material and an anti-microbial material. A fibrous filter layer may overlay an outer surface of the mesh shield.

A personal protective apparatus, having a wearable support member and a mesh shield securable thereto. The mesh shield may include first and second air-permeable conductive layers secured to the wearable support member and a first air-permeable non-conductive layer received between the first and second air-permeable conductive layers to separate them, and a portable power supply coupled to the mesh shield with a negative high voltage lead to the first air-permeable conductive layer and a positive high voltage lead to the second air-permeable conductive layer. The mesh shield may be a flexible mesh shield, and include at least one air-permeable layer secured at a first layer upper end to the wearable support member to hang from the wearable support member, the at least one air-permeable layer including at least one of an anti-virus material and an anti-microbial material. A fibrous filter layer may overlay an outer surface of the mesh shield.

Disclosed is a piece of furniture for air purification in the form of a substantially closed cabinet including: an upper purpose tray; side walls in vertical alignment below this tray; an opening in the top of the side walls; an opening in the bottom of the cabinet, in which an opening allows the filtered air to exit; an electrical power source; an air pressurizer connected to the power source, allowing the air to flow through the cabinet; a horizontal filter, parallel to the upper purpose tray and upstream of the air pressurizer; a vertical filter, perpendicular to the upper purpose tray downstream of the air pressurizer, at least 3 cm away from the nearest side wall; a duct between filter downstream of the air pressurizer and the nearest side wall, which duct allows the filtered air to be discharged towards the opening of the bottom part of the cabinet.

Disclosed is a piece of furniture for air purification in the form of a substantially closed cabinet including: an upper purpose tray; side walls in vertical alignment below this tray; an opening in the top of the side walls; an opening in the bottom of the cabinet, in which an opening allows the filtered air to exit; an electrical power source; an air pressurizer connected to the power source, allowing the air to flow through the cabinet; a horizontal filter, parallel to the upper purpose tray and upstream of the air pressurizer; a vertical filter, perpendicular to the upper purpose tray downstream of the air pressurizer, at least 3 cm away from the nearest side wall; a duct between filter downstream of the air pressurizer and the nearest side wall, which duct allows the filtered air to be discharged towards the opening of the bottom part of the cabinet.

An electrostatic precipitator includes a dust collecting sheet configured to emit ions and configured to collect an aerosol charged by the ions, a power supplier electrically connected to the dust collecting sheet, a plate-shaped structure arranged upstream of an air flow path rather than the dust collecting sheet, and including at least one of a filter mesh or a grille including a plurality of openings, a potential stabilizer arranged between the plate-shaped structure and a ground, and configured to stabilize a potential of the plate-shaped structure, and a controller configured to control the power supplier to supply power to the dust collecting sheet.

Presented are a method and apparatus for evacuation. An exemplary fluid evacuation system includes a surgical apparatus having a fluid conduit therethrough. The system further includes a vacuum tube fluidly coupled with the fluid conduit, and an electrostatic precipitator fluidly coupled with the fluid conduit. Additionally, the system includes a vacuum source fluidly coupled with the vacuum tube, wherein the vacuum source is operable to create a flow of fluid through the fluid conduit, the vacuum tube and the electrostatic precipitator.