slow sand filter cleaning Articles

  • 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

  • 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

  • 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

  • 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 ...

  • 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 ...

  • A Regulatory Perspective on Maintenance of Disinfection Systems

    ABSTRACTThe Clean Water Act contains requirements to set water quality standards for all contaminants, including bacterial contaminants, in surface waters. Wastewater treatment cannot be expected to remove all of the bacterial contaminants, and as a result, many organisms remain in the waste stream. Therefore, disinfection of treated wastewaters is designed to reduce bacterial numbers to a safe ...

  • Glass blended rapidly with abrasion resistant rotary mixer

    While most reading this article may be unfamiliar with the Kopp Glass name, most are likely familiar with Kopp Glass products. From a humble beginning more than 80 years ago, as a manufacturer of red glass for railroad signals, Kopp now claims to be the world's leading producer of precision molded industrial quality technical glass.  The company is known worldwide among the ...

  • 2015 North American Water Treatment New Product Innovation Award

    Background and Company Performance Industry Challenges Tertiary and advanced wastewater treatment (WWT) is one of three stages in the cleaning of wastewater generated by the municipal and industrial sectors. Building on and improving upon the results of treatment through initial primary and secondary WWT stages alone, tertiary treatment is performed prior to waste ...


    By Frost & Sullivan

  • Compost in the mix for storm water management

    Bioretention areas, also known as rain gardens, are increasingly being used to capture and treat storm water runoff from impervious surfaces such as roofs, sidewalks and parking lots. These landscaped areas often feature native plants installed in an engineered soil mixture that includes compost. “Bioretention areas or rain gardens are an attractive storm water Best Management Practice (BMP) ...


    By BioCycle Magazine

  • Mercury spill control procedures - industrial hygiene news

    Mercury is a known neurotoxin that is extremely toxic even in small amounts. It directly affects the central nervous and renal systems, causing developmental delays, motor and brain problems like those associated with autism. Mercury’s hidden danger also lies in when at room temperature, when exposed it vaporizes readily. Once it has become an aerosol, it is absorbed into the lungs and ...


  • Building soils for storm water compliance and successful landscapes

    THE SOILS for Salmon project - initiated in 1999 by the Washington Organic Recycling Council (WORC) - has been building momentum through collaboration with the Washington Department of Transportation (WSDOT), regulators at the state Department of Ecology, local governments, scientists, and green leaders in the building, landscape and development industries. Over the years, the Soils for Salmon ...


    By BioCycle Magazine

  • Mercury Spill Control Procedures

    Mercury is a known neurotoxin that is extremely toxic even in small amounts. It directly affects the central nervous and renal systems, causing developmental delays, motor and brain problems like those associated with autism. Mercury"s hidden danger also lies in when at room temperature, when exposed it vaporizes readily. Once ...


  • Erosion and Sediment Control: Navigating NPDES Regulations, the SWPPP, and Techniques for Compliance

    Erosion and Sedimentation: Why Are They a Problem? The US Environmental Protection Agency lists sediment as the single most common pollutant in rivers, streams, lakes, and reservoirs. With all the potentially harmful chemicals and substances in the world, it seems odd to many people that sediment—dirt, essentially—is singled out as the major culprit. Yet these particles of ...


    By FINN Corporation

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