An electrostatic precipitator is disclosed. The electrostatic precipitator includes an ionization unit configured to generate ions and a dust collection unit configured to electrically collect dust to which the ions are attached. The ionization unit is an ionizer that applies a predetermined voltage to an electrode needle to cause a corona discharge to generate the ions having the same polarity as a polarity of the applied voltage. The dust collection unit includes a high-voltage electrode disposed having a plurality of gaps for passing the dust to which the ions are attached, and a dust collection board disposed at a rear stage of the high-voltage electrode. A polarity of the voltage applied to the electrode needle of the ionization unit and the polarity of the voltage applied to the high-voltage electrode are set to the same polarity.

An electrode for use in an electrostatic precipitator comprising a conductive central portion to which are attached a plurality of conductive disc-shaped elements each having sharp points spaced around its circumference and a plurality of openings near its center. The central portion passes through the centers of each thus locating them parallel to one another along the central portion. The disc-shaped elements are conical or convex in shape, and oriented with their rims raised above their centers so that any water that collects on them runs out through the openings and down the central portion of the electrode thus reducing or eliminating arcing between the electrode and a collector in the electrostatic precipitator. A high voltage feedthrough and the electrode assembly are configured as one contiguous chamber with holes around the interior walls of the high voltage feedthrough to alternately receive liquid and gas.

This publication discloses a filter unit connectable to a mobile communication device including a fan for generating an air flow inside the filter unit, electrodes covered with a photo catalytic material like TiO.sub.2 in the air flow, UV-LEDs illuminating the electrodes, and outlet for the air flow directed in direction of user of filter unit.

A plasma purification module is described. The plasma purification module includes a first electrode plate, a second electrode plate, at least one long electrode and a catchment element. The first electrode plate is configured to be connected to a first electrode of a power supply. The second electrode plate is disposed over a surface of the first electrode plate, and is configured to be connected to a second electrode of the power supply, in which the second electrode plate has a channel. The long electrode is configured to form a discharge area. The long electrode is disposed on the surface of the first electrode plate and passes through the channel. The long electrode has a tip. The catchment element is disposed adjacent to the tip, and is configured to provide the discharge area with mist or water.

An air purification apparatus and methods of air purification and treatment using ionization is disclosed. In some embodiments, an ion generator apparatus comprises a modular electrode and a housing connected to the modular electrode. The modular electrode includes an elongated conduit body comprising a power receiving end and a conduit connecting end opposite the power receiving end; and a plurality of ion generating elements occupying different radial positions around a perimeter of the conduit body, the ion generating elements generating negative ions or positive ions in response to an applied alternating current. A first electrical connector on the power receiving end is connectable to a second electrical connector on the conduit connecting end of another conduit body, such that a plurality of conduit bodies can be connected together in a series. The housing is connected to a power receiving end of one of the conduit bodies of the modular electrode.

An apparatus for treating air, such as an air humidifier, air cleaner, air washer or the like, may include a rinse-around body around which liquid rinses, an air conduction system arranged to stream the air to be treated against the rinse-around body, and an electrostatic precipitator assigned to the rinse-around body such that solid and/or liquid particles are precipitated from the air to be treated streaming against the rinse-around body and that the precipitated particles enter the liquid.

An electrostatic precipitator includes: a chamber having an inlet configured to receive an effluent stream for treatment and an outlet configured to convey a treated effluent stream; and an electrode structure housed within the chamber, the electrode structure being operable to generate a corona for treating the effluent stream to produce the treated effluent stream, wherein the electrode structure includes a comb structure having a shaft and a plurality of teeth extending from the shaft, the corona being generated at a free tip of each tooth in response to a voltage when applied across the electrode structure and the chamber The electrode teeth provide a reduced area from which the corona is generated, thereby improving the corona, but also the reduced size of the electrode teeth compared to existing electrode structures provides a reduced area for the accumulation of particulates and facilitates the shedding of those particulates from the electrodes.

An electrostatic precipitating apparatus for a cooling tower is provided. The precipitating apparatus include an electrostatic precipitator including a plurality of discharge electrodes to which a voltage is applied and a plurality of electrostatic precipitating electrodes each disposed between the discharge electrodes and grounded, a washing water supply spraying the washing water to the electrostatic precipitator, and a frame assembly supporting the electrostatic precipitator. The electrostatic precipitator includes a first setting beam having a plurality of lower slots into which the discharge electrodes are fixedly inserted, and the frame assembly includes a lower frame extending in a stacking direction of the discharge electrodes to support the first setting beam, via which a voltage is applied to the discharge electrode.

Disclosed herein is a dust collecting tower apparatus that includes a housing having an inlet, into which gas is introduced, and an outlet from which the gas is discharged, and a collection module disposed in the housing and configured to collect particulates with a corona discharge. The collection module includes a plurality of discharge electrodes, to which a voltage is applied, a plurality of collection electrodes disposed between the respective discharge electrodes, where the collection electrodes is grounded, and a first setting beam having a plurality of lower slots into which the discharge electrodes are inserted. The apparatus further includes a washing water feeder configured to spray washing water to the collection module.

Disclosed herein is an electrostatic precipitator apparatus that includes a housing having an inlet, into which gas is introduced, and an outlet from which the gas is discharged, and a collection module installed in the housing. The collection module includes a plurality of discharge electrodes, to which a voltage is applied, and a plurality of collection electrodes grounded and disposed between the discharge electrodes. The apparatus further comprises a washing water feeder to spray washing water to the collection module, and a washing water treatment device disposed beneath the collection module to accommodate the washing water dropped from the collection module.