well pump Articles

  • DESMI Pumps for HVAC in Sharjah, UAE - Case Study

    DESMI has supplied a series of eight NSLH End Suction Centrifugal Pumps for the Umm Al-Qura building located in Sharjah at the Al Mamzar beach. The NSLH pumps will be providing 198 differently sized apartments with cooling. The residential building has 22 floors + 5 floors for car ...


    By DESMI A/S

  • Fire Codes: A Foundation of Safety for a Rapidly Changing World

    Chief among these safety features is fire protection. There are myriad codes and regulations relating to fire safety in commercial buildings, from standards on portable fire extinguishers to the installation of stationary pumps for fire protection — the U.S.- based National Fire Protection Agency (NFPA) alone has more than 300 consensus codes that have been adopted in whole or in part ...

  • Treatment of pumping wells case study

    Results from an Australian Trial Problem The pumping wells had accumulated fat and grease on their walls. With time septic conditions had set in giving rise to strong malodours and the local residents had started to complain about the smell. In addition acids produced under septic conditions were damaging the structural integrity of the pipes and pumps and increasing ...


    By Cleveland Biotech Ltd.

  • Low energy mixing to optimize anaerobic digestion at the Kitchener WWTP

    The existing Kitchener Wastewater Treatment Plant (WWTP) is a conventional secondary treatment facility, with a rated capacity of 122,745 mVd. The plant is comprised of two separate secondary treatment plants (Plant 1 and Plant 2) served by a common headworks facilities and primary clarifier facilities. Plant 1 was constructed in the early 1960s and Plant 2 was constructed in the mid-1970s. Both ...

  • Changing the Rules with Mass Detection

    How simplified detectors can provide mass data for every analytical run and speed up method development With access to multiple mass spectrometry systems of varying degrees of sophistication, Davy Guillarme (University of Geneva, Switzerland) wasn’t actively looking for new mass detection solutions. Nevertheless, the Waters ACQUITY QDa mass detector caught his eye. Why? Because it opens a ...


    By Waters Corporation

  • What Is Zero Liquid Discharge and How Does It Work?

    Not every industrial facility that produces wastewater will require zero liquid discharge (ZLD). It is usually looked to as a last resort because it can be a complex process that requires a high initial investment. If a facility is located on a site that has severe water scarcity issues and/or astronomical discharge fees, it might be ...


    By SAMCO Technologies, Inc.

  • How a Specialized Automatic Control Valve Solved Flooding

    The Colombian area of Antioquia creates much of its clean power from hydropower plants along the Guadalupe River. The Guadalupe IV hydroelectric plant generates power with three vertical axis turbines that discharge water below the river level. To prevent flooding, however, the plant needed a solution that ensured the ejector ...


    By Singer Valve Inc.

  • Hand-pumps as reservoirs for microbial contamination of well water

    The retention and release of total coliforms and Escherichia coli was investigated in hand-pumps removed from tubewells tapping a faecally contaminated aquifer in Matlab, Bangladesh, and from a new hand-pump deliberately spiked with E. coli. All hand-pumps were connected to reservoirs of sterile water and flushed. Faecal coliforms were observed in the discharge from all three of ...


    By IWA Publishing

  • Pumping wells & sewage lines case study

    Dorset Council - Bioremediation of Sewerage System The Dorset Municipality situated in the North East of Tasmania covers an area of 3196 km2. It comprises 14 townships, 10 water schemes and reticulated sewerage schemes for its two largest townships, Scottsdale and Bridport. Their populations are 1922 and 1234 respectively. Bridport’s population increases to approximately 6000 over ...


    By Cleveland Biotech Ltd.

  • Optimal groundwater contamination monitoring using pumping wells

    This study presents a new method for selecting monitoring wells for optimal evaluation of groundwater quality. The basic approach of this work is motivated by difficulties in interpolating groundwater quality from information collected for only few sampled wells. The well selection relies on other existing data relevant to contaminant distribution in the sampling domain, e.g. predictions of ...


    By IWA Publishing

  • Landfill pumps for Gas well dewatering - Case Study

    AutoPumps Keep the Power On for Thousands of Florida Homes Waste Management's Springhill Regional Landfill near Campbellton, Florida generates "green" energy by extracting and burning the methane in landfill gas. Its $7 million landfill gas energy (LFGE) plant, with six large Caterpillar engines running 24 hours a day, 7 days a week, is capable of producing 4.8 million watts of power. ...


    By QED Environmental Systems

  • Deep Well Measurement

    Pulsar's superior echo processing was proven once again in this difficult very deep Welsh wet well application featuring a 23m 'shot' that needed to follow the level between the heads of two submersible pumps. The reliability and versatility of the advanced echo processing technology in Pulsars non-contact ultrasonic range has been utilised at the SwanseaWasteWater TreatmentWorks, in a 23m deep ...

  • Regional modeling of wells

    The ability to represent wells in a regional three-dimensional numerical groundwater model is crucial for many modeling exercises. Such wells can either be measurement wells where groundwater levels are measured as a function of time, or wells can be pumping wells in which water is removed from the well and a drawdown cone is created in the water table surrounding the well. There are numerical ...


    By SoilVision Systems Ltd.

  • Well oiled machines

    On November 1, 2004, Bridgewater's first oil skimmer began removing oil from its mill drains. At a cost of $6,500, the skimmer, supplied by Abanaki UK Ltd, represents a significant investment and underlies Bridgewater's commitment to enhancing the operation of its Effluent Treatment Plant. The acquisition of an oil skimmer materialized following lengthy periods of under performance from a ...


    By Abanaki Corporation

  • Advances in Multilevel Well Technology

    Several detailed field studies performed at research sites in the 1980’s and 1990’s suggest that most contaminant plumes exhibit large variations in concentration over small vertical distances. These variations are caused by spatial variations in the contaminant source zones and heterogeneity of the geologic materials. Conventional monitoring wells have been shown to be ineffective for accurately ...


    By Solinst Canada Ltd.

  • Evaluation of a Horizontal Well

    Background: Air Sparging Air sparging is an in-situ remediation technology where air is injected into the saturated zone of an aquifer. It is an alternative to conventional ex-situ pump and treat systems for remediation of contaminated ground water. It is necessary to understand the pattern of air flow that will occur in the subsurface in order to determine the optimal placement, ...

  • A Natural Modeling Approach to Pumping Wells in Visual MODFLOW Flex

    The Waterloo Hydrogeologic software development team is constantly making improvements based on the feedback and suggestions from our worldwide users. Recently, our focus has been on redesigning the pumping wells boundary condition in Visual MODFLOW Flex. We chose to emulate the behavior from Visual MODFLOW Classic which provides a natural approach of defining the well discharge rate over the ...


    By Waterloo Hydrogeologic

  • Analytical Solutions for Free-Hydrocarbon Recovery using Skimmer and Dual-Pump Wells

    Accidental release of petroleum hydrocarbons to the subsurface may occur through spills around refineries, leaking pipelines, storage tanks or other sources. If the spill is large, the hydrocarbon liquids may eventually reach a water table and spread laterally in a pancake-like lens. Hydrocarbons that exist as a separate phase are termed light non-aqueous phase liquids (LNAPL). The portion of the ...


    By QED Environmental Systems

  • Numerical evaluation of pumping well transmissivity estimates in laterally heterogeneous formations

    Transmissivity estimates derived from non-steady-state, single well, constant discharge, aquifer tests in laterally heterogeneous environments generally are questioned relative to their representativeness of aquifer conditions. Drawdown in pumping wells reflects the removal of water from storage in the aquifer and transient refraction of groundwater path-lines during the evolution of a ...


    By Springer

  • In-well Vapor Stripping - Technology Overview

    In-well vapor stripping technology involves the creation of a ground-water circulation pattern and simultaneous aeration within the stripping well to volatilize VOCs from the circulating ground-water. Air-lift pumping is used to lift ground-water and strip it of contaminants. Contaminated vapors may be drawn off for aboveground treatment or released to the vadose zone for biodegradation. ...


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