coated media filter Articles

  • Coating techniques for glass beads as filter media for removal of manganese from water

    Dry as well as wet coating techniques were developed to coat glass beads as filter media to remove manganese from water. For dry coating, powdered manganese oxide ore was fixed on the media surface. Wet coating was achieved by depositing synthetic manganese oxides onto the bead surface. The media were characterized by electron microscopy as well as by testing the removal of Mn2+ in a ...


    By IWA Publishing

  • Treatment of heavy metals by iron oxide coated and natural gravel media in Sustainable urban Drainage Systems

    Sustainable urban Drainage Systems (SuDS) filter drains are simple, low-cost systems utilized as a first defence to treat road runoff by employing biogeochemical processes to reduce pollutants. However, the mechanisms involved in pollution attenuation are poorly understood. This work aims to develop a better understanding of these mechanisms to facilitate improved SuDS design. Since heavy metals ...


    By IWA Publishing

  • Low-temperature effects on the removal of soluble manganese in MnOx(s)-coated media systems

    The purpose of this study was to investigate the role of low-temperature conditions in potentially impacting soluble Mn2+ removal in MnOx(s)-coated media systems. The study involved an extensive examination of water quality and process data for a 10-year period (2005–2014) from the Harwood's Mill Water Treatment Plant in Newport News, VA. Additionally, laboratory-scale shallow depth ...


    By IWA Publishing

  • 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, ...

  • Case Study - KIA E-Coat Wastewater and Treatment Process

    KIA Automotive uses a water-borne Electrodepostion (E-Coat) paint process that produces various wastes including rinse waters containing Zinc (Zn), Nickel (Ni) & phosphorous (P) waste. Most of the waste is found in the rinse waters from the e-coat overflows that contain less 1000 mg/l TSS. Some of the “dumps” contain detactified paint waste concentrate in small quantities. The various ...

  • Improve performance by installing a larger filter bag

    YOU MIGHT NOT NEED a more powerful dust collector after all. That’s the word from woodworkers who’ve replaced the original equipment filterbags on their collectors with bags that are more efficient. You might ask, “What can be more efficient than the 1 micron bag that came with my collector?” The answer is a 1 micron bag that’s properly sized for your machine and ...


    By American Fabric Filter Co

  • 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 ...

  • Filtration and manganese removal

    Manganese removal through a filter bed is generally carried out and accepted by practitioners and researchers as occurring through catalytic oxidation at the surface of MnO2 coated media, although manganese passage through a coated media filter has been little investigated. To better understand the kinetics of Mn removal through a naturally coated filter, a pilot plant consisting of four filter ...


    By IWA Publishing

  • Low cost processes for the removal of phosphates in water and wastewater

    This paper presents a synopsis of various low-cost techniques employed for the removal of phosphates from water and treated wastewater. Techniques employed include seawater flocculation and coagulation/flocculation using bittern, adsorption on fluidised raw dolomite bed, and filtration through iron and aluminium coated filter media. Seawater flocculation at a seawater concentration of 10% ...


    By Inderscience Publishers

  • Chemical Phosphorus Removal from Onsite Generated Wastewater

    ABSTRACT Phosphorus originating from onsite generated wastewater is becoming recognized as a major cause of impairment to streams and lakes. Efficient, low maintenance technologies are needed to reduce discharge levels. Removing phosphorus using luxury uptake or precipitation followed by settling, as is common at municipal wastewater treatment plants, is not practical for onsite generated ...

  • Suffer from Allergies or Asthma?

    The “ULTRA” washable air filters have an antimicrobial protection that will not allow bacteria, fungi or mold to grow on the filter surface. The antimicrobial protection is not a coating and is not sprayed on. It is a safe and effective antimicrobial agent processed directly into the electrostatic fiber media, rendering it as permanent as the filter itself. The University of ...


    By ACI Manufacturing

  • Scale removal - Case Study

    Water Cooling Towers Operate at Better Efficiency and Lower Maintenance Costs with KDF Water Filter Media "As Seen in Water Quality Products" At TowerKlean™ LLC... KDF Water Filter Media Help with Scale, Algae, Chlorine and Heavy Metal Removal from Water Scale... it's a vicious never-ending problem that can kill the overall efficiency of water-cooling systems or ...


    By KDF Fluid Treatment, Inc.

  • Side by Side Comparison of the Aerotrap Total Fungal SamplerTM

    ...with Grease Slides, the Aerotrap Total Fungal SamplerTM with Glyceryl Triacetate Cleared Mixed Cellulose Ester Membrane Filter Slides and the Zefon Bio-PumpR using the Zefon Air-O-CellR. ...

  • Investigation of options to remove the fat based deposits in the anaerobic digestion facility

    1.0 Introduction The effluent from Greencore is treated by a hybrid AD facility which incorporates UASB granular sludge bed and fixed film media technology. The plant is not designed to treat fats, oils and greases and the presence of fats, oils and grease (FOG) has two detrimental effects on plant performance, namely; FOG’s coat the UASB sludge granules causing then to ...


    By EcoJump LLC

  • Filtration by Means of Ceramic Membranes - Practical Examples from the Chemical and Food Industries

    Traditionally, ceramic membranes have been used in waste water engineering. Meanwhile, they are applied in all areas where media need to be filtered, such as in recycling processes in the chemical industry, for cell separation in biotechnology or for fruit-juice filtration in the food industry. 1 Introduction Ceramic membranes based on aluminum oxide are an operationally reliable ...


    By atech innovations gmbh

  • Methods of Water Purification

    This article is excerpted from 'Pure Water Handbook' published by Osmonics®, Inc. of Minnetonka, Minnesota USA and is printed with permission of Osmonics, Inc. Water treatment can be defined as any procedure or method used to alter the chemical composition or natural 'behavior' of a water supply. Water supplies are classified as either surface water or groundwater. The majority of public or ...

  • Self-Cleaning Filtration for Pretreatment of Membrane, UV and Ozone Water 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 flocculents, pre-coats or granulated media. Pre-treatment of ozone systems is often needed to remove organic solids that would utilize high amounts of ozone during oxidation leaving little for complete disinfection. Selfcleaning screen filters ...

  • Mitigation of Cu(II) phytotoxicity to rice (Oryza sativa) in the presence of TiO2 and CeO2 nanoparticles combined with humic acid

    Engineered nanoparticles (NPs) and natural organic matter (NOM) in the environment may interact with background contaminants such as heavy metals and modify their bioavailability and toxicity. In this work, the combined influences of two common NPs (TiO2 and CeO2) and humic acid (HA, as a model NOM) on Cu(II) phytotoxicity to rice were investigated by a 3‐day root elongation assay performed on ...


    By John Wiley & Sons, Ltd.

  • Understanding Crossflow Filtration

    There's a lot of attention being given to water availability and purity, with good reason. Obtaining enough water is a struggle in some areas. In others, water is tainted with contaminants. It is therefore predictable that regulations and economics will force careful water treatment and stress water re-use. Fortunately, there are water treatment methods that can help you meet the water quality ...


  • Talkeetna Water System, Alaska - Case Study

    In late 2009, VEI Consultants contacted AdEdge Water Technologies to design, implement and startup an arsenic, iron, and manganese treatment system for the Talkeetna Water System in Talkeetna, Alaska. The existing water supply consisted of a well rated for 250 gpm with an arsenic level of 20 parts per billion (ppb). Iron and manganese levels were 0.04 mg/L and 0.10 mg/L respectively. The water ...

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