disc filtration Articles

  • The hybrid process TiO2/PAC: performance of membrane filtration

    In investigations concerning the photocatalytic degradation by TiO2 usually filter discs with a pore size of 0.22 μm and 0.45 μm are used for the removal of photocatalyst particles in aqueous suspensions. In this study the effective rejection of suspended particles by microfiltration in different types of membrane modules and with different membrane materials was investigated. Furthermore, ...


    By IWA Publishing

  • Filtration Opening Size of Geotextiles by Hydrodynamic Sieving

    The latest development on the hydrodynamic sieving technique (HST) using glass beads to determine the filtration opening size (FOS) of geotextiles is presented. The FOS value is defined as the 95% (by mass) diameter of the glass beads which have passed through the geotextile under the hydrodynamic sieving action. The data of an experimental program to verify the repeatability and reproducibility ...


    By ASTM International

  • Rolled Filters Move Filtration in a New Direction

    When selecting filtration technology, industrial users have long wrestled with the tradeoffs of dirt-holding capacity versus particle selectivity or quick-and-dirty change-outs versus process time. For many applications, a self-contained rolled filter offers an effective solution to both problems. Constructed with polypropylene hardware and various media in a spiral-wound design, rolled filters ...

  • Nan H2O filtration Drinking Water Production – Membrane Filtration Municipality of Lac - Bouchette

    Located in Lac-Saint-Jean, Quebec, Lac-Bouchette is a municipality of 1,400 inhabitants. For its supply in drinking water, the Roche Ltd Consulting Group recommended the municipality to call on H2O Innovation’s services. This, following a pilot study executed on the water of the Ouiatchouan lake that has been carried out from May till October 2003. The nanofiltration treatment system called ...


    By H2O Innovation

  • Filtration solution for one of the biggest refineries of Europe - Case Study

    AZUD has developed an intuitive, safe and fully autonomous filtration solution for one of the biggest refineries of Europe.    The problem The cooling system is installed outdoors, with variable weather conditions, from - 35°C in winter until the + ...


    By Sistema Azud, S.A.

  • Tertiary treatment for wastewater reuse based on the Daphnia magna filtration – comparison with conventional tertiary treatments

    Tertiary treatments are required to permit safe reuse of wastewater. The performance of a new biological tertiary treatment based on the filtration by a population of Daphnia magna was studied and compared with the performance of other conventional tertiary treatments such as coagulation-flocculation, settling tank, disc filtration, sand filtering and ultraviolet (UV) light. The analysis was ...


    By IWA Publishing

  • AZUD HELIX AUTOMATIC filters are specially suitable for high flow solutions.

    The 4DCL, 400 and 200-300 series are in-line self cleaning equipment with disc filtering elements, with High Density Polyethylene manifolds, that provides a high resistance with easier handling and installation. AZUD HELIX AUTOMATIC filters are indicated for high flow solutions in industry applications like cooling towers, swimming pools or purifying plants. The main advantages of AZUD HELIX ...


    By Sistema Azud, S.A.

  • PREFILTERS IN ULTRAFILTRATION PROCESSES

    AZUD HELIX AUTOMATIC filters are excellent protecting Ultrafiltration membranes. Their operation is based in the disc filtration technology, which supplies an in-depth filtration. The installation of AZUD HELIX AUTOMATIC filtration equipments as prefilters is one of its commonest applications. The installation of AZUD HELIX AUTOMATIC filtration equipment prior to the cartridge filters permits: ...


    By Sistema Azud, S.A.

  • Detection of atrazine and 2,4-d in raw milk

    MATRIX: Raw Milk ANALYTES: Atrazine, 2,4-D RANGE OF DETECTION: Atrazine: 5 to 250 ppb, 2,4-D: 0.05 to 2.5 ppm MATERIALS: RaPID Assay, Kit and Sample Diluent for Atrazine and 2,4-D Reagents: methanol (pesticide grade), glacial acetic acid, distilled or deionized water, diatomacoeus earth (Celite 545). Equipment: ...


  • The Electro-magnetic forces

    In this research we will introduce the new technique Electro– magnetic forces to filtrate the lubricant oil from the dust of the natural or artificial solid metals. DC type voltage within the range of 0–30 Volts were used on a steel meshes (Porosity=0.83) and for the steel discs (P=0.0885), while the range of 0–200 Volts were applied for the steel meshes (P=0.787) .The preliminary investigations ...


  • The best alternative to the protection of the UF membranes - Case Study

    Advance solutions to the recirculation of water in swimming pools. Problem The public swimming pools are continuously used during all the week for many people for making sport, amusement or relax. In these installations, the visual aspect and the sanitary conditions must be guaranteed all the time. In indoor public pools, even with the mandatory previous shower and the use of ...


    By Sistema Azud, S.A.

  • MAS Introduces Filter Innovation

    Our partner MAS has recently attracted attention for a range of technical innovations in extrusion and plastic recycling technology, including the co-rotational conical twin screw extruder and a waterless cleaning system for film flakes. This ...


    By eFACTOR3 LLC

  • Microsieving in primary treatment: effect of chemical dosing

    Primary and chemically enhanced primary wastewater treatment with microsieving (disc or drum filtration) was studied at the large pilot scale at seven municipal wastewater treatment plants in Europe. Without chemical dosing, the reduction of suspended solids (SS) was (on average) 50% (20–65%). By introducing chemically enhanced primary treatment and dosing with cationic polymer only, SS ...


    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

  • Ideal treatment of laundry wastewater with ultrafiltration installations

    Treatment of very dirty work clothing also produces heavily polluted, oily/greasy wastewater. It is the aim of laundry wastewater treatment to reduce fresh water consumption and to minimise the volume of residuals. At the same time, adherence to the limit values according to appendix 55 of the General provisions on hydrocarbon, heavy metal and AOX contamination in wastewater must be guaranteed. ...


    By EnviroChemie GmbH

  • Meat processing factory - Case Study

    Installation in a narrow space Problem This factory had used multi disc type dewatering equipment for long time; however, they had been facing problems such as aging and lack of throughput of the equipment. Due to a limited space for the dewatering equipment, they were looking for compact dewatering equipment with larger capacity. AMCON's ...


    By AMCON Inc.

  • Using Coir Geotextiles for soil erosion control

    One of the most effective and yet natural soil erosion prevention techniques is the use of Coir Geotextiles fabrics ( Woven Geotextiles). Used extensively to prevent environmental degradation Geotextiles have no synthetic material but is instead made out of an organic fiber, coir, which is extracted from the husk of a coconut. It is strong, durable, water proof and is one of the few natural ...


    By CoirGreen

  • Case History - Ammonia Emergency Plan Calls on Packed Tower to Scrub Released Chemicals

    Croll-Reynolds designed the Union Camp packed tower scrubber for ammonia removal efficiency at 99+% for the minimum single valve release and well over 90% for the entire range of operation. A few years ago Union Camp turned a corner. Management decided that advance planning would take the place of reacting after the fact to an emergency or regulatory agency demands. At Union Camp's Dover, OH, ...


  • Chemical Industry: Ammonia Emergency Plan Calls on Packed Tower to Scrub Released Chemicals Case Study

    A few years ago Union Camp turned a corner. Management decided that advance planning would take the place of reacting after the fact to an emergency or regulatory agency demands. At Union Camp’s Dover, OH. facility, byproducts of the paper industry are converted into usable specialty chemicals for cosmetics, adhesives and other industries. Crystallization is a process used intensively with ...


    By CR Clean Air Group, LLC

  • Pulp & Paper: Ammonia Emergency Plan calls on Packed Tower Case Study

    A few years ago Union Camp turned a corner. Management decided that advance planning would take the place of reacting after the fact to an emergency or regulatory agency demands. At Union Camp’s Dover, OH. facility, byproducts of the paper industry are converted into usable specialty chemicals for cosmetics, adhesives and other industries. Crystallization is a process used intensively ...


    By CR Clean Air Group, LLC

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