low flow pump Articles

  • Low cost, low flow chemical dosing

    Hewitt Refractories is one of the country’s leading manufacturers of night storage heater bricks for domestic heating systems, and a range of refractories for domestic appliances. As the quality of the finished product is dependent upon the accurate dosing of the chemical additive into the refractory material, Hewitt Refractories investigated a number of alternative systems. Compared to other ...


    By NOV Mono - Mono Pumps Ltd

  • Wastewater and groundwater

    Nearly 25 percent of the population in the United States—in more than 25 million homes—disposes of wastewater through onsite, or unsewered, systems that return treated effluent to the ground. This is an important public health issue because many of those same homes use wells that rely on groundwater for the drinking water supply. With ...

  • 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.

  • Groundwater: Low-flow Purging and Sampling

    Significant timesavings, improved sample process integrity, quality assurance and minimal quantities of potentially contaminated purge water to manage - are attractive as the focus on groundwater quality sharpens and economics demand best cost-benefit based methods Water has become a vitally important resource.  Maintaining its quality and quantity and avoiding pollution are set to be ...


    By Geotech

  • Low Flow Groundwater Sampling Using RotaPump Inertial Lift Pump

    This article tells you how to perform low flow groundwater sampling using a portable, surface-mounted pump with no decontamination required before each use and  no chance of cross contamination between wells. An inertial lift pump moves a dedicated (stored in the well) pumping tube rapidly up and down.  A one-way valve on the bottom admits water on the down stroke and ...


    By RotaPump, Inc

  • Norfolk CC tackle groundwater contamination with low-flow

    Quick and easy access in deep wells Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals ...


    By Geotech

  • Controlling the Flow Capacity of a Metering Pump

    Since a metering pump is usually a positive displacement pump there are two possible ways of controlling the flow capacity. The first one is by adjusting the volume of liquid displaced per stroke of the pump and the second is by adjusting the speed of the strokes. I. Stroke Length – control the displacement volume per stroke II. Speed of Strokes per minute Stroke Length ...


    By Aquflow

  • Case study -Norfolk County Council tackle groundwater contamination with low-flow

    Geotech low flow groundwater analysis equipment has enabled quick and easy access to samples at 2m intervals down a 28m screen in deep boreholes. Elizabeth Guilford of Norfolk County Council hired the low flow kit from Geotech and used it on a Norfolk CC landfill where leachate contamination of groundwater was suspected. Samples taken at 2m intervals close to elevation of the suspected ...


    By Geotech

  • Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures

    Untitled Document Background The Regional Superfund Ground Water Forum is a group of ground-water ...


    By Solinst Canada Ltd.

  • Case study - Low-flow groundwater sampling on a nuclear site

    Nuclear licensed site use of low-flow groundwater sampling shows: Reduced time, reduced quantity of purge water – both thus reducing cost - and reduced risk of operator contact especially with potentially radioactive-contaminated purge water thanks to a self-contained enclosed system. One of the biggest headaches on site is the purge water and the expense of getting rid of it – after ...


    By Geotech

  • Rigorous Theoretical Analysis of a Flow Pump Permeability Test

    With the growing importance of environmental issues in our society, extremely low-permeability geotechnical materials are being studied increasingly for their long-term stability and effectiveness in retarding the transport of hazardous wastes. Relatively rapid measurements of the permeability and specific storage of the materials, using relatively low hydraulic gradients, can be obtained with a ...


    By ASTM International

  • Design and Evaluation of a Flow Pump System for Column Testing

    The design of the equipment components of a flow pump system for the measurement of solute (effluent) breakthrough curves from soil columns is described. In addition, the performance of the system in terms of the effects of equipment components and temperature on measured differential pressure fluctuations across soil specimens is illustrated. The flow pump for the system provides continuous flow ...


    By ASTM International

  • Boskalis and our BBV Pumps environmentally friendly high flow pump unit

    Boskalis Nederland is a part of Royal Boskalis Westminster N.V. Boskalis was established in 1910 and has expanded from a local dredging contractor to a leading global maritime services company with over 11.000 employees. Originally, dredging and earth moving were the core activities of the company. They are now additionally active in the dredging and inland infra, and offshore energy sectors. The ...


    By BBA Pumps

  • High Tech in the low country

    Area utilities in Beaufort, S.C., are provided primarily by the Beaufort Jasper Water and Sewer Authority (BJWSA). The authority's service area includes Beaufort and Jasper counties, which encompass more than 1,200 sq miles and 125,000 customers of their own, plus a number of other utilities within the counties. This quiet, historic area seems an unlikely place for a five-year-long search for ...


    By Mission Communications, LLC

  • Performance of the low-emission flare

    Job report / Elbisgraben (Bale / Switzerland) The summer of 1992 had finally arrived. The 5MW low emission furnace in the district heating station Liestal was ignited, supplied with landfill gas from Elbisgraben landfill. Since then the plant has been running continuously and the comprehensive measurements taken, verify that all targets aimed at have been achieved: plant ...


    By Hofstetter BV

  • Performance assessment of low-order versus high-order numerical schemes in the numerical simulation of aquifer flow

    Numerical methods have been widely used to simulate transient groundwater flow induced by pumping wells in geometrically and mathematically complex systems. However, flow and transport simulation using low-order numerical methods can be computationally expensive with a low rate of convergence in multi-scale problems where fine spatial discretization is required to ensure stability and ...


    By IWA Publishing

  • Innovative Application of Two-Phase Flow Yields Low Energy, Side-Stream Membrane Bioreactor Process

    Membrane bioreactors (MBRs) are accepted in the municipal and industrial wastewater market as providing high quality effluent. The majority of the installed systems in the United States to date use immersed systems where the membranes are submerged either directly in the bioreactor or in a separate membrane tank. One key reason immersed systems were developed was to avoid the high energy cost of ...

  • Flow & unload - hi-flow process increases well flow rate and acts as a temporary flow back handling system

    Problem In an effort to increase the flow rate through a well in the Gulf of Mexico and ultimately unload the well, a major operator required a means to increase the flow rate from 500 barrels of total fluids per day to at least 2,000 barrels per day. The operator required a system that could simultaneously increase the flow rate through the well while ensuring the resulting wastewater ...


    By CETCO Energy Services

  • Retrofit decreases dissolved oxygen at low load

    Teresa Hansen, Section Editor Entergy’s Little Gypsy Unit 2 is a 450 MW gas-fired (with an oil alternative) thermal power plant originally designed for base load operation. Since changing over to peaking power operation, the plant has had problems with excessive dissolved oxygen (DO), especially during periods of low load. Entergy hired Intek Inc. to use a nontraditional ...


    By Intek, Inc.

  • H-ADCP Flow Gauge Installation

    Wessex Water contracted HL to install a new flow-gauge to provide flow data on the environmental impact of abstraction upstream and downstream of a riverside borehole for public-supply. Due to the channel and hydraulic conditions at the site on the River Yeo in Somerset, HL selected a horizontal ADCP Channelmaster device from Teledyne RDi for providing accurate velocity profiles at one elevation ...

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