multimedia filter Articles

  • Innovative Multi-Media Filter – Continuous Backwash Filter

    The disadvantages of conventional MMF based pretreatment Conventional pretreatment is based on multimedia filters (MMF) implemented in large scale desalination plants. Although this filtration method is well proven and provides reliable filtration efficiency, it conceals an inherent drawback, the disadvantages of which relate mainly to the backwashing mechanism. The ...


    By IDE Technologies

  • Predicting the performance of multi-media filters using artificial neural networks

    The impact of flow rate and turbidity on the performance of multi-media filtration has been studied using an artificial neural network (ANN) based model. The ANN model was developed and tested based on experimental data collected from a pilot scale multi-media filter system. Several ANN models were tested, and the best results with the lowest errors were achieved with two hidden layers and ...


    By IWA Publishing

  • New developments in filter cartridges for reverse osmosis pre-filtration

    Reverse osmosis (RO) pretreatment systems are designed to reduce suspended solids to a level that will provide the most suitable conditions for the performance of the membrane system. Depending upon the quality of the feed water, pretreatment may include settlement, clarification, multi-media filtration, and chemical treatment. However, sediment pre-filtration is always required to ensure that ...

  • Screen Filtration Technology as Applied to Pretreatment of Reverse Osmosis and Ultra-Filtration Systems

    Summary New developments in the manufacturing technology of stainless steel weavewire screens enable mechanical style self-cleaning filters to be utilized as the primary pretreatment device for R-O and U-F systems. These systems are more cost effective and feature lower O&M requirements, than multimedia ...

  • Superfund site - creosote removal

    Project Profile:US EPA Groundwater Remediation of Creosote Oil DATA: End User: US EPA, Army Corps of Engineers, Superfund site program Location: Bainbridge Island, WA Commissioned: Spring, 2005 Units: (1) FDB-7P Hydromation Deep Bed, Filter (HDBF) Flow Rate: 70 ...


    By Filtra Systems

  • 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 ...

  • Commercial BWRO Package, Iraq

    INTRODUCTION In July 2013, Pure Aqua, Inc. designed and manufactured a commercial BWRO unit to a major company in Iraq to lower chlorine, TDS, and odor from well water. The system included multimedia and activated carbon filters to remove particulates, odor, color and taste, and ...


    By Pure Aqua, Inc.

  • Commercial SWRO Machine, Philippines

    INTRODUCTION In April 2013, Pure Aqua successfully manufactured and supplied a commercial SWRO machine to a major company in the Philippines. The machine came complete with an advanced microprocessor control along with pretreatments consisting of a ...


    By Pure Aqua, Inc.

  • How can I detect Nitrite in meat

    In Europe many meat products like ham and smoked pork chop are cured. Curing is a process to preserve meat and sausages by addition of common salt. The meat develops a typical curing taste and becomes red in color. This process is important to avoid a grey coloration and a growth of microorganisms. However the reaction of nitrite with amino acids, can cause the formation of carcinogenic ...


    By Camlab Limited

  • 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 ...


  • Treating Industrial Water with Membrane Technology

    A variety of industries are finding that it makes sense to reevaluate the way they treat industrial process water, both to improve the quality of their products and increase the efficiency of their processes. Purification systems utilizing crossflow membrane filtration, such as reverse osmosis (RO), nanofiltration (NF) or ultrafiltration (UF) can be a good alternative to traditional filtration ...


  • Municipality of Barrows, Manitoba case study

    Situated some 500 km north of Winnipeg, the municipality of Barrows is home to about 300 inhabitants. Barrows has a school in the village with close to 100 students. The only available source of water supply for the municipality is an underground spring with a TDS (total dissolved solids) concentration exceeding 1900 mg/L making the water undrinkable (see Table I). At the request of John Brittain ...


    By H2O Innovation

  • Grey water recycling system for midlands library

    Midlands Library Grey Water Recycling System Aquaco has won and is delivering an important contract for a grey water recycling system for a public library in the Midlands. Aquaco feels that a main strength of its business is in grey water recycling which collects bath, basin and shower water, filters and disinfects, and then recycles the water for use in toilet flushing. ...

  • Victor Project – De Beers Canada, Ontario case study

    In early 2006 De Beers Canada began the construction of its first Ontario diamond mine, in the James Bay Lowlands. To provide drinking water for this mining camp and its daily workforce of nearly 1,000 , the engineering- consulting firm AMEC recommended that De Beers Canada call on the expertise of H2O Innovation. H2O presented a solution that matched its client's very special needs and ...


    By H2O Innovation

  • Beverage Manufacturer to Cut Disposal Cost

    THE PROBLEM A Pennsylvania general contractor with much experience within the beverage industry, saw that water utilization at a major food and beverage manufacturer’s facilities would benefit from an integrated approach to minimizing water consumption, while simultaneously optimizing boiler and cooling water treatment issues.  By adopting such an approach, the contractor planned to offer ...


    By Samsco Corporation

  • Commercial RO Package, Jordan

    INTRODUCTION In April 2013, Pure Aqua, Inc. designed and manufactured a commercial RO package to a major hotel in Jordan to remove, chlorine, TDS, and odor from well water. The package consisted of pre and post treatments including a multimedia filter and chemical dosing systems. The brackish ...


    By Pure Aqua, Inc.

  • 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 ...

  • Skid mounted BWRO Systems, Venezuela

    INTRODUCTION In July 2013, Pure Aqua successfully manufactured and supplied five skid mounted BWRO systems to a major company in Venezuela. The skid mounted BWRO systems came complete with am activated carbon filter for chlorine ...


    By Pure Aqua, Inc.

  • Drinking Water Treatment Municipality of Sainte-Geneviève de Batiscan, Quebec

    A number of Quebec municipalities are confronted with feedwater problems of a bacteriological or physicochemical nature hardness, manganese, iron, dissolved solids) in the production of their drinking water. In many cases, these water sources do not meet government quality standards for drinking water. Membrane filtration preceded by the appropriate pretreatments can be a solution. Piloting ...


    By H2O Innovation

  • 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 ...

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