Provided are purification systems and methods of using such systems for purifying various environments, such as indoor air, outdoor air, vehicle emissions, and industrial emissions. A purification system comprises an ionizing purifier having a substrate and an active coating. The active coating comprises a pyroelectric and/or piezoelectric material. During the operation, an incoming stream is directed toward the active coating while controlling the average pressure exerting on the active coating. This contact between the incoming stream and the active coating generates negative ions from components of the incoming stream via change in temperature and pressure/force/vibration, etc. The negative ions then interact with pollutants, transforming them into safe, purified materials of the outgoing stream. Unlike the pollutants in the incoming stream, the purified materials are non-harmful, and/or can be easily removed from the outgoing stream, e.g., by filtering and/or other separation techniques.

Disclosed is an electrostatic induction-type air filtration dust-collecting apparatus and method, whereby a film-type electrostatic filter having high efficiency and a low pressure loss is used as a primary filter so as to enhance air permeability to reduce the pressure loss and to enhance a dust-removing performance of the filter and the primary filter is utilized as an electrostatic inductor so that the performance of a secondary nonwoven fabric filter charged with static electricity can be enhanced and the enhanced performance can be maintained and thus the efficiency of collecting dust including ultrafine particles in air can be increased.

Disclosed is an electrostatic induction-type air filtration dust-collecting apparatus and method, whereby a film-type electrostatic filter having high efficiency and a low pressure loss is used as a primary filter so as to enhance air permeability to reduce the pressure loss and to enhance a dust-removing performance of the filter and the primary filter is utilized as an electrostatic inductor so that the performance of a secondary nonwoven fabric filter charged with static electricity can be enhanced and the enhanced performance can be maintained and thus the efficiency of collecting dust including ultrafine particles in air can be increased.

An atmospheric water harvesting apparatus includes a post, a water capturing unit, a drive bearing, a motor, a water collecting member, and a power source. The water capturing unit comprises a cylindric wall. The cylindric wall is positioned concentrically with the post. The cylindric wall comprises an inner surface and an outer surface. The cylindric wall forms an air passageway having an air inlet and an air outlet. The inner surface of the cylindric wall is coated with a layer of triboelectric material. The drive bearing is rotatably mounted about the post. The drive bearing is provided with a plurality of radial bars. The water collecting member is located beneath the water capturing unit to collect water captured by the water capturing unit. The power source is electrically connected to the motor.

An atmospheric water harvesting apparatus includes a post, a water capturing unit, a drive bearing, a motor, a water collecting member, and a power source. The water capturing unit comprises a cylindric wall. The cylindric wall is positioned concentrically with the post. The cylindric wall comprises an inner surface and an outer surface. The cylindric wall forms an air passageway having an air inlet and an air outlet. The inner surface of the cylindric wall is coated with a layer of triboelectric material. The drive bearing is rotatably mounted about the post. The drive bearing is provided with a plurality of radial bars. The water collecting member is located beneath the water capturing unit to collect water captured by the water capturing unit. The power source is electrically connected to the motor.

A plume cleaning system for a toilet is integrated with a toilet. In one example, a plume cleaner assembly adjacent to a toilet seat is independently removable with respect to the toilet seat. The plume cleaner assembly may include a plume cleaner, apertures, and a fan positioned to draw plume air through the plurality of apertures for treatment by the plume cleaner and expel the treated plume air out of the plume cleaner assembly in a direction at an angle to the apertures. In another example, a plume cleaner assembly with the toilet seat may include at least a fan, an electrostatic collector, and a mist generator. In another example, a plume cleaner assembly is integrated in a tank of the toilet to generate a sanitization fluid that is channeled into the toilet bowl through an overflow tube and/or rim channels.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.

Filter media for an active field polarized media air cleaner includes two layers of dielectric material with a higher resistance air permeable screen sandwiched between the lower resistivity electric layers. The filter media may further include a mixed fiber filter layer having fibers from different sides of the triboelectric scale. The filter media may further include a layer of relatively higher density dielectric material followed by a layer of relatively lower density dielectric material.