sediment monitoring Articles

  • Regionally Based Assessment of Persistent Toxic Substances

    Untitled Document EXECUTIVE SUMMARY In 1997 the United Nations Environment Programme (UNEP) Governing Council decided that immediate international action ...


  • World’s largest compressible media filtration plant eliminates combined sewer overflows, with potential for dry-weather use

    The City of Springfield, Ohio, recently opened its 100 MGD enhanced high-rate treatment facility, designed to treat and disinfect combined high-volume stormwater and wastewater flows generated by wet-weather conditions. Utilizing EPA-documented Compressible Media Filtration technology – FlexFilter™ from WesTech – the system can also provide tertiary filtration and disinfection ...


    By WesTech Engineering, Inc.

  • SolarBee Technical Bulletin

    A. SOLARBEE OVERVIEW 1. Origin of the SolarBee. Pump Systems, Inc. (PSI) developed, built and installed its first solar powered mixer in Dickinson, ND, in the summer of 1998. It was installed into a 30 acre x 13 foot deep municipal wastewater reservoir which had a long history of toxicity associated with ammonia, odor, and stratification problems. In six weeks the entire reservoir cleared up to ...


    By Medora Corporation

  • Kay Armstrong Corners the Market in Hazardous Waste Cleanups and Community Relations

    The Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) created the Hazardous Substance Superfund. It was intended to be a short-term program that would spend $1.6 billion over five years to clean up 400 hazardous sites around the country. Instead, more than $17 billion has been spent and only 212 sites (15% of the 1,439 listed since its inception) have been ...


    By ARMSTRONG and Associates

  • Air quality in Europe - 2014 report

    Despite considerable improvements in the past decades, Europe is still far from achieving levels of air quality that do not pose unacceptable risks to humans and the environment. Air pollution is the top environmental risk factor of premature death in Europe; it increases the incidence of a wide range of diseases and has several environmental impacts, damaging vegetation and ecosystems. This ...

  • RAISING THE BIOSOLIDS BAR: DEVELOPING AN ENVIRONMENTAL MANAGEMENT SYSTEM

    A California sanitation district’s journey through the process of establishing an EMS for biosolids provides valuable insights, especially for agencies battling public acceptance challenges. THE Orange County, California Sanitation District (District) provides wastewater treatment service for more than 2.2 million people. The facility treats approximately 250 million gallons/day of wastewater and ...


  • Tiny materials in countless products raise big questions for environment and health

    Nanotechnology opens a universe of possibilities — but also creates a world of unknowns. In recent years, efforts to develop the Next Big Thing — whether in medicine, computer technology, pollution prevention or high-performance materials — have turned to some really, really small things: nanomaterials. Working at the ...


    By Ensia

  • Waterloo Emitters used for Bioremediation Study in High Temperature Saline Groundwater

    A study was undertaken to determine the success for aerobic bioremediation of aromatic hydrocarbons (BTEX) and MTBE (methyl tert-butyl ether) in high temperature, saline groundwater conditions. The study included laboratory microcosm experiments, as well as a field trial in Saudi Arabia, in which Solinst Waterloo ...


    By Solinst Canada Ltd.

  • Toxicological and Environmental Safety Data - Case Study

    Introduction AGRAGEL is a cross-linked copolymer of acrylic acid and acrylamide partially neutralized as potassium/ ammonium salt. The polymer is in its dry form a granulate and forms a gel-like material upon addition of water or aqueous solutions. Due to the cross-linking it is insoluble in water. Uptake of water is facilitated mainly by the negative carboxylic groups of the polymer and ...

  • MYTH vs TRUTH: “If my disinfectant residual is always high enough, I don’t have to worry about microbes”

    Monitoring disinfectant residuals (i.e. Free and Total Chlorine and/or Chloramine concentration) is one of the most essential practices in drinking water management programs.  This ensures that sufficient protection is maintained at all points in the distribution system.  The absence of a disinfectant residual means that suppression of microbiological growth is much more difficult and ...

  • Sample Handling Strategies for Accurate Lead-In-Soil Measurements in the Field and Laboratory

    ABSTRACT The inhomogenous lead-in-soil matrix can present serious obstacles to accurate sample collection and handling. In typical lead-in-soil measurement, particle size related errors in sampling and sample handling often exceed all other sources of error. The magnitude of error can vary widely depending on the particulate nature of the lead contaminant and the effectiveness of control ...

  • Chemical-Free Treatment of Recirculating Water Using Pulsed-Power

    Untitled Document Regulatory pressures and economic considerations require industry to become cleaner, more efficient, and more environmentally benign. Such operating principles advance not only ...


    By Dolphin WaterCare

  • Challenges at MSW Landfill Sites

    Covering the day’s trash at the landfill Today’s municipal solid waste (MSW) landfills are much more than places to dump household trash. They’re engineered facilities that are designed to hold and isolate the trash from the environment and are governed by both federal and state regulations. Landfill designers and operators face two main challenges ...


    By FINN Corporation

  • Accelerated Bioremediation as an Alternative to Conventional Remedial Technologies.

    ABSTRACT: Application of bioremediation as an alternative technology to expedite soil and ground-water remediation has been effective in reducing the concentration of hydrocarbons at an affordable cost. Bioremediation processes can be achieved by the addition of biological organisms into the soil and ground water which are contaminated and are microorganism deficient. The microorganism's ...


    By REGENESIS

  • Boggabri Erosion Control Flumes, New South Wales - Case Study

    Background During the past ten to fifteen years, the resources sector has seen phenomenal growth however in the areas of coal, gas and petroleum the expansion has been unprecedented. In NSW, coal mining in the Hunter Valley near Singleton and Muswellbrook has always been the focus of attention for coal mining and growth, however despite expectations that deposits will be available for some ...


    By Presto Geosystems

  • USGS, NASA Study Finds Widespread Coastal Land Losses from Gulf Oil Spill

    A new USGS-NASA study found widespread shoreline loss along heavily oiled areas of Louisiana's coast after the 2010 BP Deepwater Horizon oil spill and compared the erosion from the spill with coastal changes Hurricane Isaac caused in 2012. A pattern of dramatic, widespread shoreline loss along Louisiana’s coast caused by the 2010 BP Deepwater Horizon oil spill has been ...

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