Abstract: Method and apparatus for treating air containing hydrogen sulfide gas, volatile organic compounds, heavy metals and other mercaptans in order to reduce odor and corrosion related to wet wells, dry pits, grease traps and the like. The system comprises a first and second stage air treatment system. A vacuum pump in the primary (stage 2) treatment housing vacuums the contaminated air from the source and pumps the air through a set of diffusers into a treatment fluid wherein the air is then passed through a pair of porous plates and upward through a discharge pump and then into the atmosphere. Prior to treating the air in the primary housing, it is treated in a pretreatment dry air filter wherein the air is inlet into the pretreatment (stage 1) housing and then through a microfilter prior to being passed into the primary housing for further treatment.

Abstract: An apparatus for removing particles and/or other undesirable components from a gas stream includes a container containing a liquid, an inlet for the gas stream permitting wetting of at least a portion of the gas stream, and an outlet from the container for cleaned gas. The inlet and/or the outlet includes condensing means for cooling desired fractions of the gas stream and/or cleaned gas. The liquid may be such as to wet the particulates, thereby retaining them in the liquid while the gas passes through the liquid to the outlet. Methods for removing particulates and/or other undesirable components from a gas stream are also provided.

Abstract: The present invention concerns a method of cleaning exhaust air from kitchen equipment, such as steamers, grilling equipment, baking ovens and the like. According to this method, the exhaust air is subjected to a pressure increase and then introduced into a fluid bath. The present invention also concerns a device (1) for cleaning exhaust air from kitchen equipment (3) for removing exhaust air from the kitchen equipment, having a pressure boosting device (7) for increasing the pressure in the exhaust air, a fluid bath (13) and an inlet line (9) for supplying exhaust air into the fluid bath (13).

Abstract: An air cleaner for efficiently providing clean air for a structure is comprised of a housing having an intake port and an exhaust port. At least one air chamber having a liquid reservoir at its base is disposed within the housing. A fan draws air through the intake port and the air passes in turn through each liquid reservoir and then its air chamber and discharges the air through the exhaust port. A switch controls the fan and is turned off whenever the liquid level within the device is improper with the device having a flush valve for discharging exhaust liquid and a liquid fill valve for introduction of liquid.