air filter Articles

  • On PM 2.5 Filters, Let’s just clear the air between us; ok?

    In the area of a former military building complex in the Chaoyang District of Beijing is a unique and thriving artistic community.  In the middle of this art district, is a strange 7-meter tall tower shaped like an avant-garde metallic pineapple.  Designed by Dutch artist Daan Roosegaarde, it is both an artistic creation and a functional tool meant to test a possible solution for ...


    By Sterlitech Corporation

  • Danone Bottling Plant Increases Production Capacity with Addition of Aeration without Modifying Existing Infrastructure

    Overview Aguas Danone de Argentina is a leader in the national mineral and flavored water market, with well-known brands such as Villavicencio, Villa del Sur, Levité, and Ser. Aguas Danone de Argentina is part of the Danone Group, world leader in the food and beverage industry, with products reaching 120 countries on 5 continents. The bottling plant located in ...

  • Expanding Reservoir Air Filters

    In all vented tanks, the rise and fall of fluid levels is offset by a corresponding volume of incoming and outgoing air. Keeping the incoming replacement air clean is essential for contamination control and thus the reliability of hydraulic systems. While targeting the system's reliability, JLM Systems Limited has developed the OilMiser™ Reservoir Aspirator (ORA) kit. This product represents a ...


    By JLM Systems Ltd

  • Why choose an electrostatic, washable air filter?

    When deciding what type of air conditioner or furnace filter to use, you should keep two things in mind: Airflow and Efficiency. In order to work at its optimum level, the a/c or heating unit requires no restriction to air flow. You should choose a filter that has the least effect on airflow, but removes the most dust from the air. ACI’s electrostatic air filters allow the air conditioning ...


    By ACI Manufacturing

  • Filter Your Air with Cartridge Dust Collector

    A cartridge dust collector uses filtering cartridges and is a self-cleaning dust collector. The cartridges it uses are made from synthetic fibers and cellulose that is treated chemically. This ensures the particles are efficiently collected without forming an excessive pressure drop in the system. Structure A cartridge dust collector uses an air-jet cleaning structure to preserve ...


    By ProVent, LLC

  • Calculating pressure drop of nanofiber air filter media

    Nanofibers are becoming an integral part of many advanced air filtration media thanks to their enormous specific surface area. The large surface area, however, can cause strong resistance against fluid motion, which leads to an increase in pressure drop. Pressure drop caused by fibrous media has been the focus of many pioneering studies in the past, resulting in analytical or empirical ...

  • How to Choose the Right Commercial Air Filter

    When it comes to selecting a commercial air filter, or air filtration system, there are many variables that have to be considered. In general, the choice of which air filter can be made a bit easier by first defining the overall goal that you are trying to achieve which is usually one of two options. Is the purpose of the filter to protect the air circulation equipment, or is it to provide a ...


    By Camfil Ltd

  • Combination filters

    Simply defined, a combination filter is one that does at least one other processing job at the same time as filtering a suspension. The classic example, of course, is the packed bed of activated charcoal, which acts as a remover of chemical impurities from the suspension, as well as removing dust particles - although this is actually not a very good example, because it is primarily an adsorber, ...

  • Influence of air flow rate and backwashing on the hydraulic behaviour of a submerged filter

    The aim of this study was to evaluate backwashing effects on the apparent porosity of the filter media and on the hydraulic behaviour of a pilot scale submerged filter, prior to biofilm colonization, under different hydraulic retention times, and different air flow rates. Tracer curves were analysed with two mathematical models for ideal and non-ideal flow (axial dispersion and Wolf and Resnick ...


    By IWA Publishing

  • Treatment of Spent Filter Backwash Wastewater Using Dissolved Air Flotation Process

    Spent Filter Backwash Water (SWW) is a major recycle stream that accounts for 10% (about 30 mgd) of the average flow at Blue Plains Advanced Wastewater Treatment Plant (AWTP) and a similar proportion of nitrification and denitrification treatment process capacity (DCWASA Focus, November 2004). The peak SWW flow and load result from increased filter washing during high flow events. The combined ...

  • Biotretment of polluted air of a storage for used plastics in bio-trickling filter (BTF)

    The problem High concentrations of unhealthy sporogenic funghi and bacteria in malodorous gases of a used plastic storage could not be purified by classical compost filters, because of their high emissions of microorganisms. Problem solution By indoor-biofiltration in a bio-trickling filter using microbially activated LEVAPOR carrier the polluted air has ...

  • Minimising Risks to Air Quality and Regulatory Compliance With Total Filter Management

    It has been shown in recent studies that as much as 25% of the total site operating budget (excluding raw material costs) for a typical medium-large dosage-form manufacturing facility will be spent on compliance measures for internal quality systems and external regulatory activities. (1) Market realities indicate that the pharmaceutical companies will need to address the overall cost of ...


    By GVS Filter Technology

  • Innovative Multi-Media Filter – Continuous Backwash Filter

    The disadvantages of conventional MMF based pretreatment Conventional pretreatment is based on multimedia filters (MMF) implemented in large scale desalination plants. Although this filtration method is well proven and provides reliable filtration efficiency, it conceals an inherent drawback, the disadvantages of which relate mainly to the backwashing mechanism. The ...


    By IDE Technologies

  • Car Engines Air Filters. A Useful Ambient Air Sampler and/or a Possible Hazardous Waste?

    Car-engine air filters (CAFs) have been recently used as inexpensive alternative air sampling media for hydrophobic organic compounds such as polycyclic aromatic hydrocarbons, polychlorinated dibenzo-p-dioxins and furans and also for heavy metals. This “active-passive” sampling methodology is a promising way for urban air monitoring, being able to offer invaluable advantages. Two ...

  • Finding an OEM solution for air purifier & air cleaner

    Finding an OEM solution for air purifier & air cleaner, there are many companies out there who are committed to finding the right solution for you and your business. Most of them will develop a solution meeting your needs. Below are examples of solutions you may need to consider if you are seeking for air purifier OEM solutions. In developing new OEM products, your vendor will work with you ...


  • Gravity self-backwashing filters

    The filtration of make-up and side-stream water in closed cooling circuits, operated through cooling towers, is a fundamental step to ensure safe and continuous operations in a power plant. Water - required in large amounts for this application - should not be wasted, and the potential damages deriving from a poor treatment must be avoided at all cost. BONO ARTES has developed a technical ...


    By Artes Ingegneria SpA

  • High-Tech Filters

    The current economic situation of the cement industry creates sensitivity regarding off-times and process stability. More stringent air-pollution laws, especially when using waste-derived fuels, are drawing more attention to the off-gas cleaning facilities, usually bag filters. This article does not deal with electrostatic precipitators - as even they have well known disadvantages. By using more ...


    By Evonik Fibres GmbH

  • Air filtration applications for membranes

    Given their unique performance attributes membranes are finding use in a growing number of high efficiency air filtration applications. One example is in respirators and personal protective equipment. Applications where intense physical demands and risk of exposure to harmful contaminants are present demand the high efficiency / low pressure drop combination of expanded polytetrafluoroethylene ...

  • Can protective garments be wearable filters?

    Protective garments for medical, civilian safety and military applications range from disposable lightweight fabrics to multilayered fabrics and laminated barrier materials, depending upon the nature of the contamination that threatens the wearer. Usually, only full barrier garments, such as the Level A liquid splash protective garments provide full protection from aerosols, and this is due to ...

  • Filter technology to meet evolving regulations

    Maguin has developed the Cercat filter for high temperature air pollution control. In this article, David Gambier and Hélène Real outline the technology, as well as installations planned for 2009. Maguin has been present in the waste thermal treatment field since the 1970s. The company’s knowledge has been built through the turnkey supply of thermal treatment units for different kinds of products ...

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