bed filtration Articles

  • Particle deposition and mobilisation during deep bed filtration in oilfields

    Deposition of latex microspheres on a borosilicate filter was carried out at gradually decreasing suspension velocities at conditions favourable for particle attachment and excluding particle retention due to size exclusion. Particle critical retention concentration followed quadratic function of suspension velocity agreeing with the modified particle attachment/detachment model based on ...


    By Inderscience Publishers

  • Potential soil characteristics for riverbank filtration using 2-D ground resistivity in Kota Lama Kiri, Kuala Kangsar

    Identifying the subsurface profile for riverbank/bed filtration (RBF) using conventional methods such as drilled boreholes is usually labor intensive, costly and acquires only 1-D profiling. Hence, a 2-D ground resistivity method was used as an alternative to obtain a 2-D subsurface profile by extending to 200 m length at Kota Lama Kiri, Kuala Kangsar, Perak site area. Four resistivity survey ...


    By IWA Publishing

  • Which technologies have enhanced application of domestic water reuse and how?

    Water related issues are getting challenging day by day. Threats of water pollution and scarcity have become quite threatening. On the other hand, global usage of water has significantly increased. On this context, ideas like domestic water reuse have become essential. Key technologies and processes: Good news is that technologies for domestic water reuse have advanced in a ...

  • 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

  • Determination of PAH in food

    Customer: Food and Feed Governmental lab., France France is divided into administrative regions and each region has its governmental lab. These labs analyze food products to check their compliance with the legal regulations, and to make sure that the products are not hazardous to health. Application: Determination of PAH in food Due to the guidelines ot ...


    By BÜCHI Labortechnik AG

  • Fouling mitigation in anaerobic membrane bioreactors using fluidized resin beads

    This study focuses on the use of fluidized resin beads to mitigate fouling during ultrafiltration (UF) of the effluent of an anaerobic bioreactor. Two different module configurations were tested: A fluidized bed of resin beads was generated in a tubular UF membrane, and a hollow fiber (HF) UF membrane was submerged into a fluidized bed, respectively. During filtration of anaerobically treated ...


    By IWA Publishing

  • Iron and manganese removal from groundwater by filtration through a chalcedonite bed

    The aim of this research was to determine the effectiveness of iron and manganese removal from groundwater using chalcedonite sand as a filter bed in rapid filtration. The experiment was conducted at a pilot plant. At the first stage of research, chalcedonite and silica sand were compared. The ripening time for manganese removal of chalcedonite was 27 days while silica sand was ripened within 57 ...


    By IWA Publishing

  • Reconstruction of a constructed wetland with horizontal subsurface flow after 18 years of operation

    The constructed wetland (CW) for 326 PE with horizontal subsurface flow at Kotenčice, Central Bohemia, Czech Republic, was built in 1994. Despite the relatively high efficiency of the CW, the filtration beds suffered from clogging, and therefore it was decided in 2011 to rebuild the whole system. The new treatment system was built as an experimental system consisting of four different ...


    By IWA Publishing

  • Modelling of moving bed biofilm membrane reactors (MBBMR) for on-site greywater treatment

    The study evaluates with a mechanistic model the pilot plant results of a combined moving bed biofilm process and membrane filtration (MBBMR) treating single household greywater. It mainly includes the simulation of reactor hydraulics, degradation of pollutants, development of biomass and settlement of sludge. Iterative calibration was made with steady-state results of a 10-month pilot test. The ...


    By IWA Publishing

  • Food and Feed Governmental lab., France - Case Study

    “The use of the BUCHI SpeedExtractor for the extraction of PAH increased the recovery rates, especially for volatile PAH.” Company / Institution Food and Feed Governmental lab., France Product lines Extraction Industries ...


    By BÜCHI Labortechnik AG

  • Rapid sand filtration pretreatment for SWRO: microbial maturation dynamics and filtration efficiency of organic matter..Desalination 286 :120, 2012

    Rapid sand filtration (RSF) is used today as an effective pretreatment procedure to enhance water quality prior to reverse osmosis (RO) membranes in desalination plants. RSF in newly operated desalination facilities requires a maturation period of about three months before the feedwater may be filtered efficiently. To date the desalination industry RSF has regarded RSF mainly as a ...

  • Food and Feed Governmental lab., France - Case Study

    “The use of the BUCHI SpeedExtractor for the extraction of PAH increased the recovery rates, especially for volatile PAH." Company / Institution Food and Feed Governmental lab., France Product lines Extraction Industries ...


    By BÜCHI Labortechnik AG

  • Hybrid filtration method for pre-treatment of stormwater

    In this study the hybrid filtration process (combining fibre filter with deep bed dual media filtration) was investigated as pre-treatment to stormwater. This process was investigated in-terms of reduction in turbidity, dissolved organic carbon (DOC), colour, headloss development across the filters, suspended solids removal, organic matter removal, nutrients and heavy matter (such as iron, ...


    By IWA Publishing

  • Biofilm formation and permeate quality improvement in Gravity Driven Membrane ultrafiltration

    The effects of biofilm development on ultrafiltration membranes with regard to permeate stability and permeation rates were investigated using Gravity Driven Membrane (GDM) filtration. The first part of the study aimed at evaluating the influence of the biofilm on permeate flux quality and quantity with regard to Assimilable Organic Carbon (AOC) degradation. In addition, two types of biological ...


    By IWA Publishing

  • What is Activated Carbon Filtration?

    The process may have ancient roots, but still plays a role in modern water treatment Activated carbon filtration is one of many processes commonly used in water treatment to remove contaminants such as organic materials, and since it also can remove odor-causing contaminants, it’s often used to make drinking ...


    By Fluence Corporation

  • Assessment of manganese removal from over 100 groundwater treatment plants

    The aim of this study was to make an inventory of water quality and operational parameters which could affect manganese removal through aeration and rapid sand filtration and to establish correlations between these parameters and manganese removal efficiency. The focus of the overview was on manganese removal efficiency in the first aeration-filtration stage of conventional groundwater treatment ...


    By IWA Publishing

  • Automated dosing of dry treatment chemical with flexible conveyor improves accuracy, safety of filtration system

    Oberlin Filter Company is a global leader in high pressure flat-bed, liquid-solid filtration systems for demanding applications such as filtering heavy metals and resins from colloidal suspensions. The company's top-of-the-line DMax™ filtration system, which cleans 'impregnation resin' wastewater, requires a dry chemical delivery system that provides more precise, cleaner, and safer dosing than ...


    By Flexicon Corporation

  • The Basics of a Fiber Bed Filter

    Fiber bed mist eliminators capture, collect, and remove liquid particle mists, sub-micron particles and harmful aerosols that cause pollution in the atmosphere. This pollution can take form as opacity, smoke, and blue haze. The pollution that is caused by mist is a product of operations of chemical and industrial processes such as, asphalt processing, acid mist control, Lube oil vents & ...


    By Kimre Inc.

  • Removal of heavy metals in an abandoned mine drainage via ozone oxidation: a pilot-scale operation

    The objective of this study was to evaluate the ozone oxidation of dissolved heavy metals in an abandoned mine drainage (AMD) by conducting a pilot-scale operation at two different ozone doses of 7.5 and 24.0 g O3/h into an ozone reactor. A portion of the abandoned mine drainage near the Jungam Mine in Samchuck, Korea was pumped into this pilot-scale plant and used as an influent for the ozone ...


    By IWA Publishing

  • Removal of heavy metals in an abandoned mine drainage via ozone oxidation: a pilot-scale operation

    The objective of this study was to evaluate the ozone oxidation of dissolved heavy metals in an abandoned mine drainage (AMD) by conducting a pilot-scale operation at two different ozone doses of 7.5 and 24.0 g O3/h into an ozone reactor. A portion of the abandoned mine drainage near the Jungam Mine in Samchuck, Korea was pumped into this pilot-scale plant and used as an influent for the ozone ...


    By IWA Publishing

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