media filter Articles

  • Tri-Mer catalytic ceramic filters use glass emissions filter technology with nano-bits of SCR catalyst embedded in the walls - Case study

    Filters are placed in housings and operate similarly to a “reverse pulse jet ceramic baghouse.” The filters are 10' long and 6" wide, with a wall thickness of approximately ¾ inch. Learn more information about Tri-Mer&rsquos;s hot gas filtration. ...

  • Micro Pulse Lidar: Perfect Tool for Atmospheric Research

    Micro pulse style lidars are active remote sensing tools proven to be highly useful in atmospheric research. This style of backscatter lidar has been around for decades; however, incremental improvements in photon counting, sensitivity, polarization, optical filters, coatings, and precision machining of each element support increasingly accurate analysis. Each iteration of the ...

  • Equivalence of Air and Water Permeability Tests in Evaluating Engineering Fabrics

    Permeability characteristics of civil engineering filter fabrics are currently evaluated by three types of tests: air permeability and falling-head and constant-head water permeability. Test procedures for the falling-head and constant-head water permeability tests are discussed, and results from these tests are correlated to air permeability results for filter fabrics. Several commercially ...


    By ASTM International

  • Optimizing Baghouse Performance in Waste-to- Energy Incinerator

    An end user with many years experience, operating3 different Municipal Waste Incineration plants, decided to build a new “state of the art” plant. After fully investigating the performance of different types of filter media, he decided upon GORE-TEX® membrane on GORE-TEX® felt, as he was convinced that is was the “best available ...


    By W. L. Gore & Associates

  • Minicipal Waste Incinerator Case History

    Low temperature plant operation had resulted in severe baghouse corrosion and constant dust blockages throughout the system. It was decided to raise the operational temperature of the incinerator and change the acid gas scrubbing agent from lime to sodium bicarbonate. However, the existing felt filter media could not cope with the change in acid gas scrubbing agent and “blinded” very rapidly ...


    By W. L. Gore & Associates

  • Liquid Filtration and Media World Markets Report

    Provides analyses & forecasts for belt presses, automatic back wash filters, filter presses, bags, leaf, drum and sand filters in each of 80 countries segmented into 10 industry segments. Analysis and forecasts of media is also included. In this fast changing market place it is necessary to have information as current as Tuesday, November 17, 2009 . Find out how this report reflects the ...


    By The McIlvaine Company

  • Recent Improvements in Air Flow Calibration Reference Instruments

    A key element in radiation protection programs at commercial nuclear power plants, nuclear research facilities, fuel fabrication plants and regulatory agency oversight programs of licensees is management's ability to validate the accuracy of the many air sampling instruments utilized in the facility's radiation protection air monitoring programs. The volume of air sampled in each sample ...


    By F&J SPECIALTY PRODUCTS, INC.

  • UK wastewater plant responds to rising demand & rising standards

    The resort town of Gillingham in south west England has responded to growing population plus increased treatment standards by installing four of Nordic Water’s Dynasand moving sand bed filters. The installation in its present configuration is designed to meet anticipated needs till 2013 – but with additional media and designed capacity for a potential fifth unit, it is expected to meet ...


    By Nordic Water Products AB

  • Industrial Hygiene Report: Control of Hexavalent Chromium Welding Fume - Non-cleanable Filter Media

    Sentry Air Systems, Inc. manufactures equipment designed to capture  welding fume and/or other air contaminants and, after filtering, return the cleansed air to the local environment. For the purposes of this test, SAS wanted to determine the effectiveness of the Model 300 Welding Fume Extractor and filter media against Hexavalent Chromium fume commonly found during the welding of stainless ...


    By Sentry Air Systems, Inc.

  • Self-Cleaning Filters for Pretreatment of Membrane and UV Water Treatment Systems

    The removal of suspended solids is necessary to protect membrane systems and prevent the “shadow effect” in ultraviolet (UV) treatment systems. Recent field data has shown the effectiveness of automatic self-cleaning filters in removing suspended solids down to less than 3 microns in size without flocculants, pre-coats or granulated media. Tests have demonstrated the complete removal of particles ...

  • Lauvåsen wastewater treatment in filter beds Norway

    Lauvåsen is a cluster of houses, holiday homes and a tourist resort in Sør-Fron municipal in Norway. 25 holiday homes, 3 houses and one tourist resort are connected to the treatment plant. This gives a dimensioning flow of: Qdim = 63 m3/day, a total of 284 pe. The treatment plant was built in 2002. Filter media used in this plant:  930 m3   Filtralite® P 0-4 mm270 ...


    By Filtralite - Leca Norge As

  • Background - Particle size is not well defined

    Background - Particle size is not well defined Fine and nanoparticles can be defined in many ways. Especially when defining the particle size and concentration. Particle size can be measured either off-line or on-line. Off line techniques typically give out particle filter mass concentration. Off-line techniques are seldom used to define particle size. When this is done, electron ...


    By Pegasor Oy (Ltd)

  • Polarized-Media EACs are coming of Age

    Non-ionizing  polarized media is an IAQ technology finding broader market uses. It applies an active electric field to cap tore airborne particles, changing the way particles, behave in the air. In smaller residential equipment, this allows an electronic air cleaner (EAC) to operate efficiently within a space only 1 inch wide - the same sp-ace as a disposable filter. In larger commercial ...

  • Simulating accumulation of biofilms in biotrickling filter

    Accumulations and spatial and dynamic variations of biofilms in the media of a biotrickling filter were simulated using mathematical models for Volatile Organic Compound (VOC) removal. Toluene was selected as the model VOC. Effects of toluene concentration and gas Empty Bed Contact Time (EBCT) on VOC removal were also investigated. Results showed that biofilm thickness increased with increased ...


    By Inderscience Publishers

  • Alternative filter media for potable water treatment

    Need for Research Roughing filters at London works: Low backwash rates for filters at older works Inability to keep sand clean (rising normalised starting head loss) Vulnerability to algal laden water Loss of production at critical times during the year Objective: identify mono-medium & dual media alternatives to BSS 14/25 ...


    By Filtralite - Leca Norge As

  • Control of Welding Fume Particulates Using Cleanable Filter Media: Hexavalent Chromium

    Herein, a Sentry Air Systems product study of hexavalent chromium particles, [Cr(VI)], is reported. Due to the popularity of extended life cleanable filter media and health concerns regarding hexavalent chromium exposure in the work place, Sentry Air Systems conducted a study of the efficacy of cleanable filter systems for the maintenance of safe breathing conditions during welding operations ...


    By Sentry Air Systems, Inc.

  • Performance of horizontal flow roughing filter using limestone media for the removal of turbidity, suspended solids, biochemical oxygen demand and coliform organisms from wastewater

    This paper examines and evaluates the removals of turbidity, suspended solids, BOD and coliform organisms from wastewater using different sizes of limestone roughing filter. Results indicated that removal efficiencies depended on the size of the filter medium and applied flow rates. Turbidity, suspended solids, BOD and coliform organisms removals were between 75% and 92%, 79% and 88%, 51% and 67% ...


    By Inderscience Publishers

  • Selection of Bioreactor Media for Odor Control

    The support media is one of the most critical elements of a biofiltration system. In this chapter, biofilters and biotrickling filters will be referred to as “biofilter”, and this distinction will be discussed later in this chapter. The support media’s main function is to provide contact between the gas-phase contaminants and active microbial cultures either immobilized within and/or attached as ...


    By PRD Tech, Inc.

  • Advantages and basic facts for the use of Lenzing PROFILEN based filter media

    Normal PTFE filter bags have a very good chemical resistance but on the other hand they do not have a high dust separation efficiency. Lenzing PROFILEN® is a compromise between a high efficiency and a high flow rate after cleaning of gases with all the positive aspects of normal PTFE bags. Basics To acquire a better feeling and understanding for the advantages of Lenzing PROFILEN® it is necessary ...

  • Use of bauxite for enhanced removal of bacteria in slow sand filters

    Slow sand filtration (SSF) is a well-known process for drinking water treatment and is widely used for the production of biologically stable drinking water and particle removal. The removal process of particles and microorganisms is highly dependent on the buildup of the schmutzdecke at the filter surface. During the ripening period and especially for cold waters, the buildup of the ...


    By IWA Publishing

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you