hollow fiber filter Articles

  • Comparison of hollow-fiber ultrafiltration to the usepa viradel technique and usepa method 1623

    Received for publication April 2, 2008. Hollow-fiber ultrafiltration (UF) is a technique that is increasingly viewed as an effective alternative for simultaneously recovering diverse microbes (e.g., viruses, bacteria, parasites) from large volumes of drinking water. The USEPA has organism-specific methods, including Method 1623 for Cryptosporidium and Giardia and the virus adsorption–elution ...

  • Laboratory efficacy and field effectiveness of hollow fiber membrane microfilters used for household water treatment in Honduras

    The Sawyer PointONE™ hollow fiber membrane filter is increasingly promoted for long-term household water treatment in developing countries. Limited data demonstrate PointONE™ microbiological laboratory efficacy and short-term diarrheal disease reduction among users, but household microbiological data is lacking. To compare laboratory and household PointONE™ filter microbiological performance, ...


    By IWA Publishing

  • The on-site feasibility study of iron and manganese removal from groundwater by hollow-fiber microfiltration

    The aim of this research was to investigate the removal of iron and manganese from groundwater by aeration, chlorine oxidation and microfiltration (MF). Pilot-scale experiments were performed at the Chang-Hua Water Treatment Plant in Taiwan. The raw waters contained soluble iron (0.4 mg/L) and manganese (0.5 mg/L) which were oxidized by chlorine and then filtered by hollow-fiber PTFE-MF. The ...


    By IWA Publishing

  • Effects of various chemical cleaning conditions for pressured MF process

    A pilot-scale pressured hollow-fiber microfiltration (MF) process as pretreatment for the reverse osmosis process was studied and operated under various conditions to assess the relative influence of backwashing, chemical enhanced backwashing (CEB), and bag filter application. The pilot plant process consisted of backwashing but without the CEB or the bag filter as the first step of the ...


    By IWA Publishing

  • Endospore recovery from large volumes using fieldable ultrafiltration for the diagnosis of drinking water treatment plants

    Anaerobic sulfite-reducing and aerobic spore-forming bacteria are used as indicators to verify the reliability of water treatment plant efficiency. The objectives of this study aimed to highlight the more accurate endospore indicator for water treatment monitoring and to select an efficient filtration system in order to detect low amounts of endospores from large volumes. The performance of two ...


    By IWA Publishing

  • Rapid method for viable Cryptosporidium parvum oocysts detection

    Cryptosporidium parvum is a waterborne coccidian protozoan parasite known to infect humans, resulting in an illness known as cryptosporidiosis. The widely used USEPA method 1622 to detect Cryptosporidium is time consuming, and unable to provide the information on oocysts viability and species. In order to develop a fast detection method for viable C. parvum ...


    By IWA Publishing

  • Clarification of rough beer in brewery industry case study

    Standard filtration uses diatomaceous earth (Kieselguhr) into filter-press and consists in the retention of solid particles (yeast cells, macrocolloids, suspended matter) and solutes responsible for haze. After use the disposal of Kieselguhr (after filtration) are a major difficulty due to their polluting effect. From the health perspective, the used diatomaceous earth is classified as ...


    By RVF-Filtration

  • Advanced treatment of Membrane Bioreactor (MBR) effluents for effective wastewater reclamation

    One of the two main objectives of this work is to oxidize MBR effluents with ozone/peroxide in high pH conditions in order to improve oxidation of pharmaceuticals, which could efficiently be rejected by the nanofiltration (NF) stage. The other main objective is to effectively oxidize of dissolved organic carbon (DOC) in MBR effluents in order to decrease fouling in the filtration stage. In this ...


    By IWA Publishing

  • What Are the Best Companies for Microfiltration and Ultrafiltration Membrane Systems?

    Whether you are looking for a microfiltration or ultrafiltration (MF/UF) membrane system that will help your facility manufacture safe food and/or beverages, boiler feed water for industrial process, or treat contaminated waste to acceptable effluent standards, it can be overwhelming to search for the MF/UF membrane system that is ideal for your specific application. MF/UF membrane systems solve ...


    By SAMCO Technologies, Inc.

  • MBR for Major Cereal Manufacturer

    Dynatec provides a turnkey wastewater solution to a food manufacturing wastewater process for a major cereal manufacturer. The problem A major cereal manufacturing plant manufacturer needed to upgrade their treatment process. MBR was selected, and the company was about 1 month away from entering into a contract with a major MBR supplier of submerged hollow fiber membrane ...


    By Dynatec Systems Inc.

  • Microfiltration vs Ultrafiltration Processes: What is the Difference?

    Microfiltration (MF) and ultrafiltration (UF) are both processes by which a contaminated liquid is passed through a semipermeable membrane that removes solids too large to fit through the membrane’s pore size, yielding a purified liquid stream. To what degree the stream is purified depends on the contaminants present and the pore size of the membrane. MF and UF are generally ...


    By SAMCO Technologies, Inc.

  • Application of Membrane Technology for the Recovery and Reuse of Water

    Abstract As water and sewer costs are expected to increase over the next decade, membrane technology will continue to be a viable and economical option in the recovery and reuse of water. This paper describes the mechanism of membrane effected separation (specifically reverse osmosis, ultrafiltration and microfiltration), membranes commercially available, membrane element configurations, and how ...


  • New Products Archives

    Product: PURELAM® A-9000/A-9010 solventless laminating adhesive Manufacturer: Ashland Specialty ...


    By Actio Corporation

  • RO Feedwater: Treat It Right

    Summary Crossflow membrane filtration systems, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF), are good alternatives to traditional filtration and chemical treatment. However, to get the best performance from them, careful attention must be paid to feedwater conditions. Pretreating feedwater can lengthen the life of membrane elements, improve the quality of the ...

  • Crossflow Membrane Filtration High-Purity Water Systems

    INTRODUCTION As the electronics industry continues to provide us with such products as high resolution television, notebook size portable computers and cars with automatic navigation systems, it becomes necessary to produce semiconductors with finer device geometries to allow for efficient placement of more circuits per a given area. This requires increased control of a semiconductor's material ...

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