Water Covers Articles

  • Case study - Wastewater lagoon cover stops odor complaints

    Problem: United Liquid Waste Recycling (ULWR) successfully recycles food and beverage waste into valuable by-products such as fertilizer. Odors from their anaerobic treatment process needed to be stopped to enable ULWR in Watertown Wisconsin to expand. Their two lagoon anaerobic digesters needed an affordable system to control odors. ULWR injects their valuable fertilizer into farm fields twice ...

  • Case study - Floating covers reduce TSS, improve chlorine disinfection

    Problem: Algae and ultraviolet (UV) rays were adversely affecting chlorination in an upstate New York reservoir and Southern Florida WWTF. Algae was shielding embedded bacteria from chlorine, making the bacteriacide ineffective, thus requiring the chlorine dosage to be increased. Algae increased the chlorine demand along with exposure to UV which dissipates un-stabilized chlorine. Both ...

  • Case study - Heat loss - A problem for wastewater treatment & nitrification

    Problem: Operators know aerobic and anaerobic systems need sufficient water temperature to keep microbial populations active and working. Heat loss is detrimental to effluent quality and gas production. Both systems can be negatively affected from low daily and seasonal temperatures. Unfortunately, most operators and engineers have no control over water temperature loss in their tanks and ...

  • Town Branch WWTP Controls Odors with Modular Covers

    The Customer: The Town Branch Wastewater Treatment Plant located in Lexington, Kentucky, USA, serves a population of 130,000—about 60 percent of Lexington-Fayette County. The plant began operating in 1919, and currently treats almost 11 billion gallons of wastewater annually. The Customer’s Needs: The Town Branch Wastewater Treatment Plant ...

  • Case study - Primary settling tanks covering to prevent odors emission

    Primary settling tanks covering to prevent odors emission at the Cambrils Waste Water Treatment Plant The Catalan Water Agency (ACA) commissioned a project aiming to minimize odor emission from a Wastewater Treatment Plant (WWTP) located in Cambrils (Tarragona) that suffered from bothersome smells coming from the primary settling tanks. Occasionally, ...


    By Bioconservacion SA

  • Case study - Algae control in raw water reservoir Ecuador

    Before the installation of the LG Sonic e-line equipment algae grew on the surface and settle down on the liner before entering the drinking water treatment plant. To cover the 24.000 m2 of water surface, it was decided to install 3 devices.   The Challenge: Green Algae Covering the Sides of the Lagoon Located in Santa Elena’s peninsula, the 42.000 m3 raw water ...


    By LG Sonic

  • Case study - Algae control in fire reservoir Häagen Dasz production facility

    A 77 meter rainwater reservoir for fire extinguishing purposes was completely covered with filamentous green algae. The green filamentous algae clogs regularly filters located before the jockey pumps.  The Challenge: Control Green Algae and Lower the Use of Oxygen Peroxide Located in Tilloy-lès Mofflaines, France, the 77 meter long rainwater reservoir for fire ...


    By LG Sonic

  • Digester Tank Cover Repair

    Digester tank covers are placed on top of wastewater digester tanks and float on top of the liquid inside the tanks. The digester tank cover at this waste water treatment facility experienced corrosion damage over time due to the caustic nature and environment. Instead of a costly ($200,000) replacement, ENESEAL CR was applied after removing the old coating. Thus saving the facility a substantial ...


    By ENECON Corporation

  • GTI Has HP Hood’s Wastewater Treatment System Covered

    The Customer: HP Hood LLC is one of the largest dairy operators in the United States with 13 plants across the country. It has been producing high quality, delicious dairy products for more than 160 years. The Customer’s Needs: HP Hood’s plant in Winchester, Virginia, USA, was undergoing a planned expansion to its wastewater treatment system to keep ...

  • Sunlight-Blocking Covers Control Algae, Reduce Operational Costs at California Utility

    The Utility: The Santa Clara Valley Water District (the District) manages an integrated water resources system that includes the supply of clean, safe water, flood protection, and stewardship of streams on behalf of Santa Clara County's 1.8 million residents. The district effectively manages 10 dams and surface water reservoirs, three water treatment plants, an advanced recycled water ...

  • GTI’s Covers Provide Over 99 Percent Odor Capture at Sydney Water’s WWTP

    The Utility: The Cronulla Wastewater Treatment Plant (WWTP) is one of 30 wastewater treatment and water recycling plants in greater Sydney, the Blue Mountains, and the Illawarra. It is owned and operated by Sydney Water, Australia’s largest water utility. The plant is located on the southern end of the Kurnell Peninsula (about 18 km [11 miles] from the city center), and treats about 54 ...

  • Water Plant’s Investment in GTI Covers Brings Both Operational and Safety Benefits

    The Utility: The Griswold Water Treatment Plant is part of Aurora Water, the utility that manages water and wastewater in the city of Aurora, Colorado, USA. This direct filtration plant treats 80 million gallons of water per day (302,800 m³/d). The Utility’s Needs: Originally built in 1965, the Griswold Water Treatment Plant had undergone ...

  • Built-to-Last: GTI Cover Replaced After 20 Years

    The Customer: Creston is a small town in the Kootenay region of southern British Columbia, Canada. Since 1959, it has been home to Columbia Brewing, makers of Kokanee beer, now owned by Anheuser-Busch InBev. The Customer’s Needs: The Town of Creston wastewater treatment facility treats both domestic and industrial (brewery) wastewater. The brewery ...

  • Odor and Heat Contained Thanks to GTI Cover

    The Customer: A major American frozen food manufacturer with worldwide distribution. The Customer’s Needs: The frozen food manufacturer required a cover solution for its wastewater treatment system that would reliably contain odors and retain heat. The Solution: Geomembrane Technologies Inc. (GTI) designed, fabricated, ...

  • Odor under cover: a solution for the largest wastewater treatment plant in Europe

    Beckton Sewage Treatment Works is one of five wastewater treatment plants in the Thames Water network in the United Kingdom and the largest treatment plant in Europe. Headquartered in the London borough of Newham, it serves 3.7 million people, mainly in north and east London. As part of a $309 million upgrade to the Beckton plant, Thames Water engaged general contractor GBM to upgrade the ...


    By CST Industries Inc

  • Drivers for and against municipal wastewater recycling: a review

    The reclamation, treatment and reuse of municipal wastewater can provide important environmental benefits. In this paper, 25 studies on this topic were reviewed and it was found that there are many (>150) different drivers acting for and against wastewater recycling. To deal with the challenge of comparing studies which entailed different research designs, a framework was developed which ...


    By IWA Publishing

  • Floating wetland islands as a method of nitrogen mass reduction: results of a 1 year test

    Floating wetland islands (FWIs) were tested in Pasco County, Florida, as a method of reducing total nitrogen (TN) in reclaimed water during reservoir storage. The Pasco County Master Reuse System (PCMRS) is a regional reclaimed-water transmission and distribution system providing wastewater effluent disposal for the county. Total daily mass loading from reclaimed water is limited by nitrogen ...


    By IWA Publishing

  • GTI Has HP Hood’s Wastewater Treatment System Covered - Case Study

    The Customer: HP Hood LLC is one of the largest dairy operators in the United States with 13 plants across the country. It has been producing high quality, delicious dairy products for more than 160 years. The Customer’s Needs: HP Hood’s plant in Winchester, Virginia, USA, was undergoing a planned expansion to its wastewater treatment system to keep ...

  • EPA Announces Three Webinars Covering PMN Submission Systems And Inviting Discussion Of Biotechnology Algae Project

    On August 12, 2015, the U.S. Environmental Protection Agency (EPA) announced three webinars to review the new features of the updated online Premanufacture Notifications (PMN) Submission System. The new web-based submission system for the Toxic Substances ...


    By Bergeson & Campbell, P.C.

  • Case study - Algae control in recreational pond

    Located in Craigmyle, Torphins (Scotland), the 3845 square meter pond was covered with dark green pond weed.  An e-line system was installed to control the algae. The Challenge: Green Algae Mats Covering the Pond’s Shores Located in Craigmyle, Torphins, Scotland, the 3,845 m2 pond was covered with dark green pond weed. For years, the image of the pond was ...


    By LG Sonic

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