Wet Scrubber Pm Control

The new type scrubber removes only SO x, and the small amount of PM that was not collected by the ESP-C passes through the scrubber. Currently IMO does not define PM limits, but PM is significantly reduced through the reduction of the sulfate portion of the PM by the use of low-sulfur fuels or other. All instruments and control equipment shall be calibrated, maintained, and operated according to the manufacturer’s preventive maintenance recommendations. Whereas dust or flyash characteristics play a large role in the sizing of dry ESPs, this is not the case with wet ESPs as they are not dependent upon particulate resistivity. shall install instruments to monitor the liquid flow rate and pressure drop of the wet scrubber. PTL shall keep a log of the wet scrubber maintenance and downtime and. Each Scrubber is modularly extendable to a QuadScrubECO model. Background A. Condensation scrubbing is a relatively recent development in wet scrubber technology. The Geoenergy® E-Tube® Wet Electrostatic Precipitator (Wet ESP, WESP) is a cost-effective way to control sub-micron particles that threats human health and one of the leading causes of visibility degradation. Because it is a wet scrubber, collected particulate is purged in a liquid discharge stream called the blowdown. the control panel. Best Deals Hitachi R18DSLP4 18V Wet/Dry Vacuum; Best Deals Pullman Holt: HEPA VAC DRUM ADAPTER 2HP Best Deals Nikro: 6 Gallon Hepa Vacuum (Wet/Dry) Best Deals Speed Mid-Size Scrubber; Best Deals Nikro Mercury Recovery Vacuum 15 Gallon Best Deals Fein 9-11-55 Turbo 8 Amp 6-Gallon 1. Supply the specifications for the gas stream including the flow rate at the design maximum and. It works by bringing the gas stream into contact with a scrubbing liquid (usually water). HOW WET SCRUBBERS WORK.



Pd-CO Promoter Petrotel-Lukoil performed and extensive revamping of FCC regenerator in order to control the afterburning (by replacing the old ineffective cyclones/plenum chamber and changing their layout). Emissions Unit Description: Dry dryers, 1-4. PM/BC Reduction by DPF and wet-ESP. control panel allows users to quickly switch between scrub and vacuum functions. •Wet scrubber literally washes out dust and smoke particles out of air. The wet electrostatic precipitator is also used for particulate control. Wet Scrubbers - Some applications are more suited to apply a wet filtration means to the collection of particulates, fumes and hydroscopic particulates. 11/14/2012, 01:05 PM The time now is 03:50 PM. Caustic scrubbing is a technology that has been used for the removal of H 2S and other acid species from gases in different industries for many years. Venturi Scrubbers Wet & Dry Dust, PM. Exhaust air is forced into a water bath and exits via baffles with engineered water streams that drop out and filter the oxide particulate laden air. The pollutants are removed primanily through the impaction, diffusion, interception or absorption of the pollutant onto droplets of liquid. IPC Gansow CT100 BT85 Scrubber Drier 3rd November 2014 / 0 Comments / in Gansow , IPC , Scrubber Drier / by admin The IPC Gansow CT100 BT85 is the largest walk behind model in the range with a huge 100L solution tank. Contact US. main engine, aux. Most wet scrubbing systems operate with particulate collection efficiencies over 95 percent. June 21, 2013.



PERFORMANCE EVALUATION OF WET SCRUBBER SYSTEM FOR INDUSTRIAL PERFORMANCE EVALUATION OF WET SCRUBBER SYSTEM FOR INDUSTRIAL AIR POLLUTION CONTROL most common type of wet scrubbers are the spray tower scrubber, venturi scrubber, etc. The main purpose of using the venturi wet scrubber is to remove air pollutants by inertial and diffusional interception. These units range from large trailer mounted systems (up to 6000 CFM) to smaller skid mounted units (up to 1000 CFM). Fiber-Bed Mist-Eliminator (used with Wet Scrubbers) Air pollution control devices used to control particulate matter are: Cyclone. HOW WET SCRUBBERS WORK. Facts About Control Equipment Performance Standards • aq4-07 • April 2008 Page 2 capture the emissions from the source, one that uses a certified hood as the capture device, and a third that allows the use of a hood that is not certified. For high tempreture scenario, pre-conditioning sprays quench the gas before entering the packed bed. Wet scrubbers can also be supplied in stainless steel, complete FRP and PP. I had the opportunity to present a new ethanol scrubber design during the emissions abatement optimization session in the energy & environment track. (b) You must not discharge to the at-mosphere through any combination of stacks or other vents process gases from an emissions source listed in Table 1 of this subpart that contain PM in excess of the allowable process rate determined according to Equation 1 of. • Conveniently located control panel with a directional switch to regulate the forward and reverse direction of the scrubber • Easy-to-read control panel with five position switch to control various functions • The rear squeegee assembly utilizes a break-away design in case of impact and automatically lowers when the machine is. Wet Scrubber Removes PM from Dryer Exhaust Monroe Multi-Stage Scrubbing System with Venturi Scrubber and Cyclonic Separator to remove particulate from a dryer prior to VOC destruction with a regenerative thermal oxidizer. the control panel. Dry Scrubber Unit includes electrodes with electric charge which contaminate the dust particle & observe the smoke & release only fresh air in the environment. Paralympic Cycling Team member. The Jaguar 20R Micro Rider Scrubber offers heavy-duty performance in a compact design. 1 Wet Scrubbers 85Dry Scrubbers Frequently Asked Questions.



Environmental We have the experience, resources, equipment and skilled manpower to complete the dirty jobs safely and quickly to get you back to “business as usual” in a healthy environment. 7Auxiliary Equipment Considerations 79Practical Considerations Specific To Scrubber Type 796. , Environmental Systems & Services. These systems start by drawing large amounts of process-air from the fume source to the scrubber unit. Mercury and SO3 Mitigation Issues for Scrubber Technology W. In many cases, 99. 105(a)(1) approved by the Administrator; and. Dry Scrubbers. The risk of wet scrubber clogging can be reduced by increasing the liquid flow or using either a cross- or concurrent flow configuration. The extracted air is pushed into one or several chemical scrubber(s) for treatment. PAC or Trona impact on flyash), • Methods to dispose or reuse scrubber waste byproducts and/or conversion of scrubber by-products to useful materials, • Real estate required for the scrubber system equipment,. Facts About Control Equipment Performance Standards • aq4-07 • April 2008 Page 2 capture the emissions from the source, one that uses a certified hood as the capture device, and a third that allows the use of a hood that is not certified. Wet Scrubbing of Particulate Matter. In a wet scrubber, a liquid sorbent is sprayed into the flue gas in an absorber vessel. (Chicago IL: American Society for Healthcare Engineering/ American Hospital Association, 2004), 84–85, 87.



Get deals on automotive parts, truck parts and more. And then strong vaporization will remove the horny substances, sebum etc. 10/10/03 EXAMPLE COMPLIANCE ASSURANCE MONITORING PLAN: WET SCRUBBER FOR PM CONTROL I. 08 lb/hr Wet Scrubber N/A EH Distillation Vent Scrubber (S-18180) Ducted to EH Fermentation CO2 Scrubber, EP-18185 for additional control. Skip the wet scrubber, you are way overthinking this. To decide whether a wet scrubber is a good. Equipment Name: As shown on Line 9 of Form E001. There are three energy usage levels for wet scrubbers. Venturi scrubber. (2) Wet Scrubber A. • Wet scrubber technology could achieve high SO 2 removal rates, but was not considered cost effective based on the Unit 3 fuel sulfur content (0. Wet scrubbers can remove particulate matter by capturing them in liquid droplets. Combining our gas inlet device technology with a PLC based control box and our automated gas inlet plunger result in a scrubber that is maintenance free for up to 6 months at a time. 4 WET SCRUBBERS FOR PM CONTROL B-28 4/02 B. High collection efficiencies, (99+%), can be achieved with low water consumption and minimum pressure drop. 350 g of dried, ground and homogenized sample into a clean, carbon-free combustion boat.



The hot gas enters the scrubber at the bottom. 1 Wet scrubber system : In a common wet scrubber system the gas is passes through an area where wet scrubber solution is actively sprayed. The ejector-venturi wet scrubber provides a number of advantages over many of the conventional single-purpose Access Full Source. These units range from large trailer mounted systems (up to 6000 CFM) to smaller skid mounted units (up to 1000 CFM). Water is used when the gas needs dust and particulate matter removed. These pollution. I had the opportunity to present a new ethanol scrubber design during the emissions abatement optimization session in the energy & environment track. I have a couple of these scrubbers in different sizes. Therefore, fuel gas consumption can be reduced. There are many manufacturers in various sectors that interchange. Most absorbers have. As the name implies, this unit uses electrical energy to draw particles from a gas stream. Easy operation gets you up and running quickly. A spray/packed scrubber is the most efficient acid gas absorber design for the pressure drop (1 to 6 inches w. Scrubs 31,000-60,000 square feet on a single battery charge. Unparalleled Performance in a 28 inch scrubber – SC750™ REV™.



Which is characterized by low operating costs, larger handling capacity. of Inlet ports Up to 4 Room Temp Temperature (For Processing Gas) Total Flow rate 800LPM Weight 700Kg. Owing to this structure, the pollution of the wastewater from the. In this work, an electrostatic spray wet scrubber (ESWS) technology designed for removal of PM (PM10 and PM2. (d) General Requirements (1) Beginning April 1, 2010, the operator of a facility shall not cause or allow. Wärtsilä has developed a full wet scrubber portfolio to fit each of our customer needs, and to meet their requirements in the reduction of SOx. Exhaust air is forced into a water bath and exits via baffles with engineered water streams that drop out and filter the oxide particulate laden air. Benefits of Digester Gas Scrubbing at the Dayton WWTP Iron sponge adsorption Wet scrubber Regional Air Pollution Control Agency (RAPCA). PARTICULATE MATTERS AND CONTROL DEVICES 173 172 PRASAD In the quest to bring down the pollutant emissions well below the stipulated norms i. U–Type Scrubber System은, 배기가스 배출 매체 (메인 엔진, 발전기 엔진, 보일러)가 각각의 Bypass를 가지며, Dry mode가 불가합니다. IQS Directory implements a thorough list of wet scrubbers manufacturers and suppliers. If you just try to mist water at the discharge exit the water won't find a lot of the dust because of the air velocity. Review DRAFT CAM TECHNICAL GUIDANCE DOCUMENT B. Inlet concentrations of ammonia were 210ppm. The main purpose is to determine how much particulate matter could be trapped in the venturi wet scrubber, also to determine the scrubber’s overall efficiency in trapping the particulate matter (Kaolin). Most of these systems consist of packed towers followed by specialized carbon vessels for polishing. Condensation Scrubber means: a control device in which steam is injected into a wet scrubber to create supersaturated conditions and promote condensation of water on fine particulate matter in the gas stream: PM PM-10: 94% 84%: 76% 68%: 57% 51%. Because it is a wet scrubber, collected particulate is purged in a liquid discharge stream called the blowdown.



Environments, an international, peer-reviewed Open Access journal. Technical Guidance Document: Compliance Assurance Monitoring Revised Draft For U. You must meet these operating limits. Inlet concentrations of ammonia were 210ppm. Townsend, MT 59644. Equipment Name: As shown on Line 9 of Form E001. Ozone and Wet Scrubbers Ozone Use in Wet Scrubbers. Scrubbers are used extensively to control air polluting emissions. Types of Scrubber : There are mainly two type of scrubber : 1 wet scrubber system 2 dry scrubber system. PM (Particulate matter) is the general term used for a combination of solid particles and liquid droplets found in the air. Air pollution control in a cement plant is no different and careful selection of technology, designed. If the vessel operates in areas where SOx emissions are controlled, compliance can be achieved using low sulphur fuel, or by cleaning exhaust gases using SOx scrubbers. The pollutants are removed primarily through the impaction, diffusion, interception and/or absorption of the pollutant onto droplets of liquid. GENERATOR WET SCRUBBER: Generator wet scrubber is a new technology which harnesses the pollutants which is harmful to the environment produced by the generator. This type of technology is a part of the group of air pollution controls collectively referred to as wet scrubbers. The hot gas enters the scrubber at the bottom. electrostatic precipitator remove particulate matter and other. Series 9000 Scrubbers feature a specially designed fine droplet scrubbing liquid spray zone within a confined involute section that eliminates any bypass of untreated gas.



net, manufactures wet scrubbers to control sulfur dioxide fumes. Dustex® has provided baghouse technology for particulate matter control since 1947. The extracted air is pushed into one or several chemical scrubber(s) for treatment. Dry Scrubber Operation - (90min, SL) B. Vapor Tech, www. The objectives of this study are to (1) develop a laboratory simulation unit of an electrostatic spray wet scrubber (ESWS) for PM emissions from poultry facilities, (2) identify and test primary design and operating parameters affecting performance of an ESWS for control of PM emissions from animal facilities, (3) model the PM removal. Buy New 2015 australian dust control WSB Wet Spray Booths for sale by Australian Dust Control - WETHERILL PARK. Increasingly, more stringent regulations are being imposed on the production of fertilizer, more specifically urea, that require advance scrubbing for multiple pollutants. 24 However, venturi scrubbers, like all wet scrubbers, produce large amounts of wastewater and sludge that must be treated. The hot gas enters the scrubber at the bottom. The pollutants are removed primarily through the impaction, diffusion, interception and/or absorption of the pollutant onto droplets of liquid. APPENDIX E - Control Device Codes Continued CONTROL DEVICE NAME CONTROL DEVICE CODE Scrubber, General SCRUBR,GENERAL Scrubber, High Pressure SCRUBR,HGH PRES Scrubber, Impingement Plate SCRUBR,IMPING Scrubber, Impingement Type Wet SCRUBR,WET IMPG Scrubber, Lime Slurry SCRUBR,LIME Scrubber, Low Pressure SCRUBR,LOW PRES. SDA: The SDA system is ideally suited as an efficient acid gas/mist control device upstream of a baghouse or ESP for many types of boiler applications in the biomass industry. Also known as water scrubber, a wet scrubber sprays a liquid (often water) into an exhaust gas or off-gas stream to capture contaminants and neutralize pollutants. In contrast to dry scrubbers, wet scrubbers move contaminated gas through a liquid that is designed to remove pollutants. Several parameters have a major influence on wet scrubber performance, such as inlet gas velocity. There are three energy usage levels for wet scrubbers. Types of Scrubber : There are mainly two type of scrubber : 1 wet scrubber system 2 dry scrubber system.



Most commonly used in food plants on oven and fryer exhaust systems, the HIT can be used in any food-processing environment that. Background A. 11/14/2012, 01:05 PM The time now is 03:50 PM. Traditional and Emerging Air Pollutant Control for Baseload Generation Stations remove particulate matter? A. 5% HSFO MARPOLAnnex VI Regulation 14 Sulphur Oxides and. PARTICULATE EMISSION CONTROL BY MECHANICAL SEPARATION The basic mechanism of removing particulate matter from gas stream is classified as: 1) gravitational settling 2) centrifugal impaction 3) inertial impaction 4) direct interception 5) diffusion and 6) electrostatic precipitation. Wet scrubber - The term wet scrubber describes a variety of devices that remove pollutants from a furnace flue gas or from other gas streams. 5, SO3 and Hg +2 after limestone wet flue gas desulphurization (WFGD) scrubbers in the utility industry. The Vulcan Drying System. per hour Battery Powered, 36 Volt System 55" Sweeping Path Aqua-Stop Water Economy System Standard 48" Scrub Path Parking Break Standard Equipment Three 16" Scrub Brush Discs Climbing Ability: Empty 20% / Full 15% Dust Control Pre-Sweep Sweeper Scrubber Only Easy battery system maintenance access. Control measures by the EPA, for SO2 pollution, specify amounts of sulfur dioxide to be present in the air. Horizontal Packed Bed Wet Scrubber The Advanced Air® Horizontal Packed Bed Wet Scrubber is proven to be efficient and reliable. I have a couple of these scrubbers in different sizes. Wet scrubbers are a pollution control devise used in the industry for removal of particulate material within a captured air stream. (d) General Requirements (1) Beginning April 1, 2010, the operator of a facility shall not cause or allow. Both SO 2and SO 3. Utilize our website to review and source air scrubbers manufactures with our easy-to-use features which allow you to locate air scrubbers companies that will design, engineer, and manufacturer air scrubbers for your exact specifications.



(b) You must not discharge to the at-mosphere through any combination of stacks or other vents process gases from an emissions source listed in Table 1 of this subpart that contain PM in excess of the allowable process rate determined according to Equation 1 of. CLEANTEK in Coimbatore ,Manufacturers of Air pollution Control Equipment Industrial Dust Collector, Do. Primary Control / Secondary Control : WET SCRUBBER - MEDIUM EFFICIENCY , MULTIPLE CYCLONE W/O FLY ASH REINJECTION , Emission Factor-- 4. How Wet Scrubbers Work. 5 to 3 litres per actual cubic metre). Unparalleled Performance in a 28 inch scrubber – SC750™ REV™. 7Auxiliary Equipment Considerations 79Practical Considerations Specific To Scrubber Type 796. Wet Scrubbing of Particulate Matter. 17 venturi scrubber for pm control--facility s. It works by bringing the gas stream into contact with a scrubbing liquid (usually water). The extracted air is pushed into one or several chemical scrubber(s) for treatment. This added the provision to designate the areas as SOx, NOx and PM Emission Control Areas. Due to these and other challenges, finding the right kind of Wet Dust Scrubber can be a challenge. In wet scrubbing processes for gaseous control, a liquid is used to remove pollutants from an exhaust stream. The main purpose of using the venturi wet scrubber is to remove air pollutants by inertial and diffusional interception. Where conventional systems (wet scrubbers or ESP’s) reduce cat emissions to an average level of 20 – 40 mg/Nm 3, Royal Dahlman’s Full Flow FCC Flue Gas Filter is minimizing the PM stack emission to << 10 mg/Nm 3.



Most of these systems consist of packed towers followed by specialized carbon vessels for polishing. condensed and removed by wet scrubber. The site had 2 off systems for treating off gas from Lamella separators. This type of technology is a part of the group of air pollution controls collectively referred to as "wet scrubbers. complete turnkey jobs are also undertakes by us. The removal of pollutants in the gaseous stream is done by absorption. Evaluating Mercury Control Technologies for Coal Power Plants Controls designed to remove other pollutants can remove a substantial amount of mercury under certain conditions. 5% High-Sulphur Fuel Oil (HSFO) Scrubber (EGCS) Enable to use 3. Wet scrubber - The term wet scrubber describes a variety of devices that remove pollutants from a furnace flue gas or from other gas streams. 17 venturi scrubber for pm control--facility s. 1 Weight And Stability Of The Scrubber 76Exhaust Backpressure 76Electrical Consumption 6. For use in reporting 2018 processes and emissions. [MEDEP Chapter 115, BACT] B. wet scrubbers - particulate matter (PM) control devices; condensation scrubbing and wet scrubber technology; wet scrubber collection efficiency. scrubber The exhaust gas, from which PM has been removed, is treated by the wet scrubber. These pollution.



More specifically, Nilfisk’s robust offering of industrial cleaning equipment includes Advance brand scrubbers, sweepers, and combination scrubber/sweepers that allow for wet-method cleaning and that offer optional DustGuard or DustClear™ dust control technologies; and HEPA-filtered vacuums that can be connected to power tools including sanders and grinders to capture dust particles as. Ionizing Wet Scrubber : SC1. Modeling of a wet scrubber can be conducted through thermodynamics analysis, heat transfer analysis, and computational simulation. Wet scrubbers are a pollution control devise used in the industry for removal of particulate material within a captured air stream. Review DRAFT CAM TECHNICAL GUIDANCE DOCUMENT B. Thought I'd revive an old thread and ask if anybody is using the automatic floor scrubbers like this on the rolled flooring. (14) The owner or operator of each affected source or process unit that uses an air pollution control system other than an ESP, wet scrubber, RTO, or fabric filter must provide to the Administrator an alternative monitoring request that includes a description of the control device, test results verifying the performance of the control device. They are also recommended due to the high conductance of many of these scrubbing solutions and by-products. 1 Background Wet scrubbers use a liquid to remove pollutants from an exhaust stream. Dust Scrubber Left Side Dust Scrubber Right Side. The Impact of Wet Scrubbers on the Environment. SO2 Wet Scrubbers (75min, SB). There are numerous types of wet scrubbers which remove both acid gases and particulate matter (PM). 0C Control Device Information Instructions for Form 780-1434 12/2009 PUB2314 This form is required if a facility has a control device operating at an emission point. Solution Control™ calibrates the machine’s solution flow, which enables users to meet green cleaning requirements by minimizing the use of water and detergent. MERCURY AND FECAL COLIFORM. Graymont Western US, Inc.



The water is discarded after. •Predicting BC control efficiency with scrubbers is complex and will improve as more units are installed. Wet scrubbers are effective at both PM and gas pollutants, and are also economically viable and simple than other particle control devices, hence they are used. emission control areas with the revision from SECAs to ECAs. com) United Microelectronic Corp. Most wet scrubbing systems operate with particulate collection efficiencies over 95 percent. Easy operation gets you up and running quickly. 7 lbm/hr -----Angus Petrotech 62. contaminants with venturi scrubber to remove PM 2. Wet scrubbers are a pollution control devise used in the industry for removal of particulate material within a captured air stream. It is the intent of this Advisory to highlight the relevant. Wet Scrubbers for Particulate Matter. Ozone is commonly used as a method to remove odor in other applications. Technical Support Document for HWC MACT Standards, Volume II: HWC Emissions Data Base, which contains a summary of the emissions information on toxic metals, particulate matter (PM), HCl and Cl2, hydrocarbons, carbon monoxide, semi-volatile and volatile organic compounds, and dioxins/furans from HWCs. You can get a customized wet scrubber system from certified manufacturers so that you can get long-term performance.



Scrubber drier BR 40/10 C Adv UL. 9 21 Fabric Filter PM >99. Wet Scrubber Removes PM from Dryer Exhaust Monroe Multi-Stage Scrubbing System with Venturi Scrubber and Cyclonic Separator to remove particulate from a dryer prior to VOC destruction with a regenerative thermal oxidizer. The Verantis® Ionizing Wet Scrubber, or IWS®, is a patented design developed to simultaneously remove noxious gases and particulates from industrial process airstream. Items that we sell are guaranteed for their normal life under standard non-commercial use. A scrubber is used to "scrub" exhaust streams of unwanted solids, liquids, or gas particles before they are released into the atmosphere. Wet Scrubber Maintenance and Inspections. The risk of wet scrubber clogging can be reduced by increasing the liquid flow or using either a cross- or concurrent flow configuration. Most wet scrubbing systems operate with particulate collection efficiencies over 95 percent. Evaluating Mercury Control Technologies for Coal Power Plants Controls designed to remove other pollutants can remove a substantial amount of mercury under certain conditions. Simply mount the Mini Scrubber as shown below and install a regulator. Oreck Commercial, Commercial battery scrubber (Catalog Category: Kitchen & Housewares / Floor Care) is a good items that you will love it and you will come back here to get it again! Don't delay just click on the button. Wet Scrubber and Neutralization Systems Many processes require the use of hazardous gases which can be flammable, toxic, corrosive, or pyrophoric. control equipment • Wet scrubber showed greatest promise. For plants that elect to use a wet scrubber to capture mercury, this mercury was readily captured in the PM control device and downstream scrubber. Find wet scrubber in US today on Hotfrog US! Looking for wet scrubber services or Dust Control services in US? Find over 51 wet scrubber business listings. DCT has been selling, installing and providing maintenance for the CDC InLine Wet Scrubbers in coal mines and coal fired generation plants for the removal of fugitive coal dust from their process systems, with great success for over 10 years and we believe they are the very best, lower cost dust control alternative for baghouse style collection systems. No data for condensable PM. Odor Control Chemical Scrubber Bleach Only Mode of Operation - OCSD's Experience Shabbir Basrai.



Emission control systems including SCR, scrubber and ESP are nitrogen, sulfur & particulate matter abatement technologies, respectively, deployed across engines & boilers to curtail the emissions. They are used primarily to arrest particulate matter because they provide many advantages over options. These units range from large trailer mounted systems (up to 6000 CFM) to smaller skid mounted units (up to 1000 CFM). A wet scrubber is used to remove pollutants or odors from process exhaust gases. 105(a)(1) approved by the Administrator; and. Ultrasonic skin scrubber causes Strong ultrasonic vibration, generated at the tip of the scrubber, causing the lavation water to get mix with sebum, toxic substances, bacteria, cosmetic residue, etc. This added the provision to designate the areas as SOx, NOx and PM Emission Control Areas. This type of technology is a part of the group of air pollution controls collectively referred to as wet scrubber s. Please complete one form for each scrubber. Dynamic Wet Scrubbers. electrostatic precipitator remove particulate matter and other. Background A. 4 WET SCRUBBERS FOR PM CONTROL B-28 4/02 B. 5% HSFO MARPOLAnnex VI Regulation 14 Sulphur Oxides and. Wet scrubbers are generally the most appropriate air pollution control device for collecting both particulate and gas in a single system. The air passes up the tower as the scrubbing liquid containing caustic (NaOH) and oxidizing agent (most often bleach or NaOCl, sodium hypochlorite) flows down the. Wet Scrubber Pm Control.