potable water filtration Articles

  • Comparative analysis on the effectiveness of various filtration methods on the potability of water

    This paper comparatively assessed the effectiveness of potable water filtration methods, commonly used in the hinterlands in some Ghanaian communities. Physico-chemical and microbiological analysis were carried out on pond, dam and river water samples, using spectrophotometric, pour plate count and the most probable number (MPN) methods. For the unfiltered water samples the total dissolved ...


    By IWA Publishing

  • 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 ...

  • Long-term behaviour of a gravity-driven dead end membrane filtration unit for potable water supply in cases of disasters

    The frequentness of serious natural disasters will rise against the background of climate change in the next decades. One of the most severe impacts of natural disasters is the interruption of drinking water supply. Contaminated water causes the death of thousands of people worldwide every year. Mobile waterworks used by aid organizations are sophisticated systems with high demand of energy, ...


    By IWA Publishing

  • Ozone is Not Just for Residential Potable Water Treatment

    It has been over 170 years since the d iscovery of the ozone (O3) molecule. Since that time, scientists and engineers have been testing and evaluating ways to use ozone in many different processes, from water and air treatment to surface and food sanitation. The evolution was somewhat slow in the early days, taking nearly 50 years before Europeans found, in 1886, that ozone could be used for ...

  • Spiral-Wound Elements for Potable Water Treatment

    Introduction Any new technology must overcome perceptions of the marketplace, which are not accurate. As a technology moves into new areas of application, new misconceptions also arise. Crossflow membrane technology is no exception. The first man-made, pressure-driven 'crossflow' membranes were made in flat sheet form. This membrane had to be configured in a device, and was first made in ...


  • The productive environmental laboratory: BSK Labs boosts efficiency with Metrohm IC

    BSK Labs runs a number of environmental laboratories and service centers along the west coast of the US. A total of 70 employees – including microbiologists, chemists, lab technicians, and support staff – make sure that the 200 to 350 samples that come in every week are analyzed. BSK Labs specializes in potable water chemistry, ground water monitoring, storm water runoff, solid waste ...


    By Metrohm AG

  • Screening optimisation for indirect potable reuse

    An automatic backflush pre-filter used for pre-treatment for secondary wastewater re-use was evaluated and optimised at two different mesh sizes over an 18 month period. The filter was initially run with a 500 μm rating mesh size, as recommended by the supplier of the downstream membrane filtration process, and then at 100 μm to investigate any change in water quality produced and associated ...


    By IWA Publishing

  • Sea water desalination – potable water application case studies

    Challenge Facing challenges of clean water shortages in Tekoradi, Ghana with the burgeoning oil/gas sector in the area offshore, something had to be done to increase clean water supply to supply the growing needs of both the military base at Tekoradi and the surrounding community. Solution Knowing the water demands were increasing, Genesis Water Technologies ...

  • Seawater reverse osmosis system for supplying potable water for airport in saudi arabia

    The Background Saudi Arabia General Authority of Civil Aviation (GACA) is responsible for constructing, managing, operating, and maintaining airports and air navigation infrastructure in Saudi Arabia. The city lacked adequate water production and distribution systems around the airport. GACA’s objective was to increase water production to meet projected growth in demand, and ...

  • A brief history of water filtration/sedimentation

    For millennia the search for ‘pure’ water has been pursued by humans. Criteria for purity have become more complex, more rigid, and more quantitative over time; however, the principles, methods, and material for purifying water have remained remarkably similar from the earliest recorded information of 2000 BC. The scope of this paper is to present a brief history of water ...


    By IWA Publishing

  • Characterization of modified PVDF membrane by gamma irradiation for non-potable water reuse

    Poly(vinylidene fluorine) (PVDF) membranes were grafted by gamma-ray irradiation and were sulfonated by sodium sulfite to modify the surface of the membranes. The characteristics of the modified PVDF membranes were evaluated by the data of Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscope (FE-SEM), the contact angle of the ...


    By IWA Publishing

  • Traditional and novel reservoir management techniques to enhance water quality for subsequent potable water treatment

    Thames Water treats approximately 2800Ml/d of water originating mainly from the lowland rivers Thames and Lee for supply to over 7.3 million customers, principally in the cities of London and Oxford. Traditionally, for London, water treatment has consisted of abstraction (pumping water from the rivers Thames and Lee), theoretical storage for 30–80 days in deep reservoirs, two stage filtration ...


    By IWA Publishing

  • West Palm Beach wetlands-based water reclamation program: sustainable water management via indirect potable water reuse and natural system restoration

    The city of West Palm Beach has experienced stress on its water supply as have many South Florida cities. However, the city is unique in that it is one of the few utilities in South Florida that still utilizes surface water for its primary water supply. The wetlands-based water reclamation program (WBWRP) was developed to reduce the city’s dependence on the regional surface water supply system ...

  • Aquifer recharge with reclaimed water: life-cycle assessment of hybrid concepts for non-potable reuse

    Aquifer recharge with reclaimed water is a promising means to store and supply on demand reclaimed water of high quality for further non-potable reuse. The reuse applications may include indirect agricultural or landscape irrigation, saltwater intrusion barriers, subsidence mitigation or aquifer replenishment. As an alternative to high-pressure or double-membrane systems, hybrid schemes ...


    By IWA Publishing

  • Clarifiers-No, Filtration-Yes: A Case Study

    Problem Twenty miles southeast of Coos Bay, Oregon situated at the conjunction of the North and South Forks of the Coquille River lays the town of Myrtle Point. Just five years ago this community of 2670 residents was facing a large potable water problem with an even larger price tag. The town feeds its water treatment plant from the North Fork Coquille River. Prior to the 1990s the water ...

  • Industrial Media Filtration Systems, Philippines

    INTRODUCTION In July 2013, Pure Aqua successfully manufactured industrial media filtration systems to a major company in Philippines to remove particulates, chlorine, organics, and odor from well water. The industrial media filtration systems were selected from our MF-1000 Series with 48" and 42" diameter ...


    By Pure Aqua, Inc.

  • Application of Direct Filtration to MIEX® Treated River Murray Water

    Dissolved natural organic matter (NOM) has been shown to interfere with the coagulation process, particularly with alum (aluminium sulphate) which is the most widely used coagulant in potable water treatment. The additional coagulant demand of the NOM can often be a significant contribution to the overall coagulant dose required for effective turbidity control in conventional water treatment. The ...


    By IXOM Watercare

  • Filtronics’ NSF Certified Electromedia sets the standard for water filtration industry

    The key to any water treatment system and its efficiency and effectiveness is its filtering media, or the sand or gravel that helps to remove pollutants and contaminants from a water source. Filtronics’ exclusive Electromedia is a permanent filtering media that is National Sanitation Foundation (NSF) ...


    By Filtronics, Inc.

  • Advanced Filtration Media (AFM): Clean Water Market Analysis

    Executive Summary This report has been prepared by Entec to provide a market assessment of the application of AFM (Advanced Filtration Media) for potable water treatment. The work has been carried out on behalf of BREWEB, the Environmental Body of the Building Research Establishment and Dryden Aqua Limited, the developers of AFM. AFM is a high quality product that has been developed as ...

  • Industrial Skid Mounted Filtration System, USA

    INTRODUCTION In April 2013, Pure Aqua successfully manufactured and supplied to a major wastewater treatment site in the USA with a skid mounted twin alternating multi-media water filtration system to remove suspended solids from well water. The multi-media filtration system comes complete ...


    By Pure Aqua, Inc.

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