A waste gas purification system includes a gas container, a gas input unit for intermittent entrance of waste gas into the gas container, a gas output unit for discharge of the waste gas out of the gas container after the waste gas is purified, and a contaminant capturing apparatus disposed in the gas container and including a capture device that purifies the waste gas by using an adhesive to adhere particulate matter in the waste gas. A length of an active time the gas input unit allows for entrance of the waste gas into the gas container does not exceed sixty seconds. A length of a pause time the gas input unit does not allow for entrance of the waste gas into the gas container does not exceed thirty minutes.

Device for separating liquid from a gas, wherein the device (11) comprises two liquid separators (12a, 12b) arranged in series, wherein the liquid separators (12a, 12b) are configured to allow a gas stream from an outlet (14a) of the first liquid separator (12a) to an inlet (13b) of the second liquid separator (12b), characterized in that means (18) are provided for creating radial standing waves in the gas stream.

The air filter medium of the present invention is an air filter medium including a stack of a porous polytetrafluoroethylene (PTFE) membrane and an air-permeable support member, a repulsive force generated in the medium when the medium is compressed in a thickness direction thereof is equal to or greater than 30 kPa and equal to or less than 150 kPa at a compression ratio of 30%, and at least one main surface of the air filter medium is formed by the air-permeable support member and has a maximum coefficient of friction of 24 gf or less. The air filter medium of the present invention is an air filter medium that uses a porous PTFE membrane and in which a decrease in collection efficiency due to pleating is inhibited.

The air filter medium of the present invention is an air filter medium including a stack of a porous polytetrafluoroethylene (PTFE) membrane and an air-permeable support member, a repulsive force generated in the medium when the medium is compressed in a thickness direction thereof is equal to or greater than 30 kPa and equal to or less than 150 kPa at a compression ratio of 30%, and at least one main surface of the air filter medium is formed by the air-permeable support member and has a maximum coefficient of friction of 24 gf or less. The air filter medium of the present invention is an air filter medium that uses a porous PTFE membrane and in which a decrease in collection efficiency due to pleating is inhibited.

A waste gas purification system includes a gas container, a gas input unit, a gas output unit, and a contaminant capturing apparatus disposed in the gas container. The contaminant capturing apparatus includes a driver device, and a capturing device to be driven by the driver device. The driver device includes two rollers, and the capturing device includes a tape disposed to continuously move from one roller to another roller when the rollers are rotating. The tape has a surface coated with an adhesive to purify waste gas entering from the gas input unit by capturing particulate matter in the waste gas before being discharged via the gas output unit.

A waste gas purification system includes a gas container, a gas input unit, a gas output unit, and a contaminant capturing apparatus disposed in the gas container. The contaminant capturing apparatus includes a driver device, and a capturing device to be driven by the driver device. The driver device includes two rollers, and the capturing device includes a tape disposed to continuously move from one roller to another roller when the rollers are rotating. The tape has a surface coated with an adhesive to purify waste gas entering from the gas input unit by capturing particulate matter in the waste gas before being discharged via the gas output unit.

An apparatus includes a chamber and an intake device configured to control a flow of fluid into the chamber. The fluid comprises particles; a resonance device is configured to resonate the chamber to provide an acoustic standing wave within the chambers. The frequency of the standing wave is selected to cause particles above a specific size to collect at a node of the standing wave.

The invention provides a system for removing target moieties from gas streams, the system comprising a supersonic expander coaxially positioned within an array of oblique shock inducers. Also provided is a method for removing target moieties from gas streams, the method comprising simultaneously subjecting the streams to supersonic expansion and oblique shock compression.

A system for the removal of gaseous pollutants including smoke, exhaust and other gases that are released into the atmosphere, comprises means for enclosing the gaseous pollutants that are released into the atmosphere and for transporting them through tubing and ductwork. Means for filtering the gaseous pollutants through a filtration system and then mixing the gaseous pollutants exiting the filtration system with steam. Means for cooling the gaseous pollutants mixed with steam exiting the filtration system with a mist to convert the pollutants being cooled from a gaseous state to a liquid state, while concurrently disposing of the smoke, exhaust, liquid and solid particulates that are in the pollutants.

A system for the removal of gaseous pollutants including smoke, exhaust and other gases that are released into the atmosphere, comprises means for enclosing the gaseous pollutants that are released into the atmosphere and for transporting them through tubing and ductwork. Means for filtering the gaseous pollutants through a filtration system and then mixing the gaseous pollutants exiting the filtration system with steam. Means for cooling the gaseous pollutants mixed with steam exiting the filtration system with a mist to convert the pollutants being cooled from a gaseous state to a liquid state, while concurrently disposing of the smoke, exhaust, liquid and solid particulates that are in the pollutants.