A wet scrubber (14) useful for reducing flue gas sulphur oxides and particulate matter comprising an at least first spray level arrangement (34) arranged horizontally in a wet scrubber tower (16). The at least first spray level arrangement (34) may comprise downwardly, upwardly, and/or combination downwardly and upwardly spraying nozzles (40). Arranged between the nozzles (40) is a plurality of single plates (76, 76A) and/or double plates (82) to direct flue gas flow into absorbent liquid or slurry atomized by the nozzles (40) for flue gas sulphur oxide and particulate matter reduction.

Embodiments of a system and a method for preparing mold-resistant paper comprising a wet scrubber assembly in fluid communication with at least one collection plenum disposed at an operational area of a paper manufacturing line. The wet scrubber assembly can be operated to draw a stream of exhaust air from the operational area of the paper manufacturing line through the wet scrubber assembly to remove particulate from the exhaust stream. Such systems and methods can be used to produce mold-resistant paper by coating a paper with an antimicrobial composition including at least one antimicrobial additive at the calendering stage. The collection plenum can be placed in proximate relationship with the calendering stack such that the amount of antimicrobial additive particulate in the air at the calendering stage is reduced. The mold-resistant paper can be used in a gypsum panel.

An exhaust gas purification system includes an exhaust gas capturing device and a purifying device. The exhaust gas capturing device is for receiving exhaust gas generated by an exhaust gas generating device, and includes an accommodation unit that defines a plurality of accommodation spaces which are in fluid communication with outside of the accommodation unit and which are for accommodating the exhaust gas, and a flow control unit that is operable to inject the exhaust gas into the accommodation spaces and/or block the exhaust gas from flowing out of the accommodation spaces. The purifying device is installed in the exhaust gas capturing device, and is operable to purify the exhaust gas in the accommodation spaces.

An air pollution control unit is configured to bring particle-containing gas and washing liquid into contact with each other to collect particles in the particle-containing gas. The air pollution control unit includes a gas washing column having a gas cleaning section in which the particle-containing gas and the washing liquid are brought into co-current contact with each other, a gas cooling column disposed downstream of the gas washing column along the gas flow and having a gas cooling section in which the particle-containing gas that has been cleaned (cleaned gas) and cooling liquid are brought into countercurrent contact with each other, and a gas communication path.

In an example, a filtration apparatus includes a cyclonic particle separation chamber having an inner surface and a liquid source. The liquid source may be to supply liquid to provide a flow of liquid on the inner surface.

A wet scrubber (14) useful for reducing flue gas sulphur oxides and particulate matter comprising an at least first spray level arrangement (34) arranged horizontally in a wet scrubber tower (16). The at least first spray level arrangement (34) may comprise downwardly, upwardly, and/or combination downwardly and upwardly spraying nozzles (40). Arranged between the nozzles (40) is a plurality of single plates (76, 76A) and/or double plates (82) to direct flue gas flow into absorbent liquid or slurry atomized by the nozzles (40) for flue gas sulphur oxide and particulate matter reduction.

Provided is a desulfurization device that allows for the easy and accurate disposition of a spray pipe inside an absorption tower. Provided is a desulfurization device including: an absorption tower (10); and a spray pipe (20) disposed inside the absorption tower (10). The spray pipe (20) includes: a cylindrical pipe portion (21), the leading end of which is closed; and an attachment flange (24) attached to the pipe portion (21). The absorption tower (10) includes: an opening hole (14e) opening toward the side; and a flange (14a) disposed around the opening hole (14e). The attachment flange (24) and the flange (14a) are detachably attached.

A method of air purification and apparatus uses thorough air-bath to trap airborne debris and gaseous molecules in the liquid. Incoming air are reduced repeatedly and thoroughly at various stages into tiny air bubbles in contact with liquid in the apparatus where airborne materials and gaseous molecules are trapped in the liquid. This cleaning system can effectively remove small or large airborne debris and gaseous molecules, in contrast to cleaning effectiveness limited by the filter pore sizes in traditional filter system. The liquid can be water, water mixed with any designed substances or other type of liquid phase of materials. In exemplary case, water is used as a part of filtration medium, the apparatus thus can be served as both air purifier and humidifier. A relatively high humidity in the air would help to trap more airborne debris, which makes the air purification apparatus more efficient.

A method and apparatus for processing waste water generated during oilfield drilling operations with a mobile processing unit utilizing heat energy sourced from burning hydrocarbon fuel directly and/or capturing and using the exhaust heat energy generated by burning hydrocarbons in engines such as diesel engines in order to vaporize a dominant mass of the aqueous phase of the waste water while clarifying the heat source combustion gasses. The water vapor generated by the vaporization process may be discharged directly to the atmosphere or alternately condensed and captured for use as potable water. The residual waste water is thereby concentrated and the cost to dispose of the waste water is greatly reduced.

A blood purification apparatus includes a blood circuit, a dialyzer capable of purifying the blood flowing through the blood circuit, a blood pump provided to an arterial blood circuit and that delivers the blood in the blood circuit, and an air-trap chamber capable of collecting air in the blood flowing through the blood circuit. A peristaltic pump (a substitution-fluid-infusion device) that is capable of infusing a substitution fluid is connected to the air-trap chamber. A substitution fluid layer is formable on a blood layer in the air-trap chamber. The air-trap chamber is provided with a blood-interface-detecting device that is capable of detecting an interface between the blood layer and the substitution fluid layer that are formed in the air-trap chamber. A lack of substitution fluid in the air-trap chamber is detectable on the basis of the interface between the blood layer and the substitution fluid layer that is detected by the blood-interface-detecting device.