sand filter cleaning Articles

  • 100 Simple Ways To Save Water

    To improve water conservation install a rain sensor, it turns off your irrigation when it rains. Use a weather-based controller. The use of smart controllers can reduce water usage 24% a year on average. Learn about available rebate programs ...


    By Jain Irrigation, Inc

  • How Thames Water reinvented its fast sand filters

    World best filter material for purification of drinking When algal blooms put the sand filters under pressure, Thames Water started its own in-house research into new filter materials. Not only did the effort cure the constraint, the use of new filter materials has saved millions in investments. Fast Cleaning To purify water with ...

  • A novel acoustic imaging tool for monitoring the state of rapid sand filters

    A new technology based on acoustic waves is developed to monitor the state of sand filters used in drinking water treatment. Changes in the sand filter, due to the removal of suspended particles from the water and their accumulation in the pores, result in an increase of the bulk density and acoustic speed of the granular material. Consequently, the reflected acoustic response changes as the ...


    By IWA Publishing

  • Influence of operating parameters on the performance of a household slow sand filter

    The biosand filter (BSF), an intermittently operated household slow sand filter, is one of the commonly used household water purification methods in the rural areas of developing countries. In this study, long-duration tests were conducted in the laboratory to investigate the influence of two important operating parameters, namely the pause period (idle time) and the charge volume on the ...


    By IWA Publishing

  • Installation of Sanding Area with Downdrought Floor: Bignell Panel Repairs

     Background Bignell Panel Repairs Pty Ltd (BPR) is a medium sized paint and panel shop employing 10 staff. In the paint and panel industry, paint dust has always been a problem. It not only impairs the quality of the paint finish but also causes environmental and health problems. Dust contains heavy metals and toxins which cause respiratory illnesses. It is easily entrained in ...


  • Indestructible Pumps for Clean Water

    Sulzer pumps are used in the production of drinking water in many cities around the world. The special qualities that these pumps possess can be seen at the Zurich Municipal Water Utility. There, the operators have to cope with rising land and energy prices and a challenging topography. A small water flea plays a major role in Zurich. It swims around in a container of drinking water with some of ...


    By Sulzer

  • Lanes cleans Cascade

    It is not just drains that benefit from Lanes’ cleaning skills. Earlier this year, the team was asked to help spring clean the Grand Cascade, a spectacular water feature at The Alnwick Garden, one of the most popular visitor attractions in the UK. The Grand Cascade is the largest water feature of its kind in the country, with 7260 gallons of water per minute tumbling down a series of 21 ...


    By Water Active Ltd

  • The natural way to clean wastewater

    John Todd founded Ocean Arks International in the 1980s, where he started to experiment with processes that mimic natural ways to purify wastewater. He built a greenhouse and ran sewage through a series of tanks, with plants suspended in the flowing waters, and constructed marshes made of sand and gravel. No chemicals were added, but plenty of aquatic creatures from snails to small fish were ...


    By BioCycle Magazine

  • Gravity self-backwashing filters

    The filtration of make-up and side-stream water in closed cooling circuits, operated through cooling towers, is a fundamental step to ensure safe and continuous operations in a power plant. Water - required in large amounts for this application - should not be wasted, and the potential damages deriving from a poor treatment must be avoided at all cost. BONO ARTES has developed a technical ...


    By Artes Ingegneria SpA

  • Effective production of rapid filters with polystyrene granules as a media filter

    In conventional water treatment stations, the filter cleaning is performed with the use of filtered water. To save water and obtain higher production, the use of polystyrene (PS) beads has been proposed as a granular filter element because it is a granular element with a low specific mass. By being lightweight, this material requires a lower water velocity during backwash. The PS beads were ...


    By IWA Publishing

  • Determining the operational limits of the biosand filter

    Worldwide, access to clean drinking water is not available for more than 800 million people. The biosand filter (BSF), an intermittently operated slow sand filter, was developed to address this problem. The BSF is used in homes to improve water quality. Three main objectives were examined in this research: (1) investigate initial startup and recovery performance after cleaning BSF, (2) examine ...


    By IWA Publishing

  • Water treatment plant filter improvements

    Client: City of Junction City, Kan. Completion Date: March 2003 Services Provided Filter rehabilitation Air scour system design Construction phase services Project Summary  Burns & McDonnell provided planning, design, bidding and construction services for the City of ...


    By Burns & McDonnell

  • 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 ...

  • Inland oil spill clean up case study

    Introduction The essential strategy for inland spill clean up techniques should be containment, recovery and temporary storage. Secondary needs will include transportation and possible disposal - or recycling. It is important to discover the source of the spill which might not be straight forward. A steady slow seepage from a leaking disused oil storage tank may be very difficult ...

  • Dual-media filters, Fredrikstad waterworks, Norway

    Fredrikstad Waterworks in southeastern Norway has an annual water production of 15 mill. cubic metres and supplies the municipalities Fredrikstad and Hvaler. During autumn 2003 they have renovated their dual-media filters. After around 8 years of operation, the volume of filter media in the existing sand/anthracite-filters was significantly reduced resulting in poor filtering ...

  • 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 ...

  • Recovery and Reuse of Filter Backwash Water: Coca-Cola Amatil

     Background The Coca Cola Amatil (CCA) Northmead plant in Sydney was established in 1972 and manufactures a wide range of world recognised Coca-Cola trademark soft drink products, such as Sprite, Fanta, Lift and Coca-Cola. The Northmead plant has one aluminium can line and two plastic PET bottle lines. It produced over 250 million litres of soft drink in 1995. ...


  • Case study: Ahlstrom’s gas turbine air intake filter media helps to save energy, CO₂ and cost

    Finding new methods for saving energy is a global megatrend. Implementing technology that saves energy will have a positive impact on sustainability. Gas turbines are widely used for energy production as natural gas is one of the cleanest burning fuels and nowadays even more interesting source of energy. One of the most important parts in a gas turbine is the blade section, which converts the ...


    By Ahlstrom Corporation

  • Sustainable, Low-maintenance Disinfection for Onsite Systems

    Most of the regulations applicable for onsite wastewater treatment system are based on the use of native soil for effluent dispersal. However, there are more and more situations where dispersal of effluent in native soil is impossible: repairs of existing systems on undersized lots for implementation of required dispersal fields: sites located in soils having low permeability: or where the ...


    By Premier Tech Aqua

  • Efficient Removal of Organic and Inorganic Suspended Solids

    ABSTRACT The Romans used sand as a filter media to treat their drinking water 2000 years ago. Centuries ago water was poured through layers of cloth to remove visible impurities in drinking water with fabric bags and paper cartridges soon following. Darcy employed sand beds in Dijon, France over 200 years ago to conduct his experiments for developing his famous equation to describe fluid flow ...

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