Water Flow Monitoring Articles

  • Flow Rate Measurement in full Pipes using the Transit Time Method

    Particularly in large diameters the relevance of water volume measurement is growing. The challenge with cooling water or fresh water processes is to generate accurate flow recordings or to document and to control individual consumptions and withdrawal quantities. Flow detection, however, particularly in large diameters is highly demanding. In such cases the transit time measurement thanks to its ...


    By NIVUS GmbH

  • Online Total Bacteria Monitor compared with ATP and flow cytometry

    Alkaline Phosphatase Enzyme Activity Measurement as a Robust on-line Monitoring Assay for Water Quality Assessment. Micro organisms maintain their growth by producing enzymes in order to provide low molecular weight inorganic compounds. These compounds could be taken up into the cells from high molecular weight organic compounds which cannot be directly utilized by bacteria. Microbial ...


    By microLAN B.V.

  • Cold Rolling Mill - Emulsified Oily Water - Case Study

    Introduction Clean Water Technology, Inc. (CWT), the creator of the Gas Energy Mixing (GEM), System provides the most advanced primary treatment system on the market. The GEM System offers superior reduction of total suspended solids (TSS), biological and chemical oxygen demand (BOD/COD), oils and grease (FOG) and turbidity. With the ability to break oily wastewaters and float ...


    By Clean Water Technology, Inc.

  • Wet weather flow management

    For years, population explosion, demographic shifts, urbanization, aging infrastructure, limited water resources, and economic development have driven our water market, and with that our world’s need for total water solutions. ...


    By CH2M Hill Companies, Ltd.

  • White Paper: Cyclical Aeration Control- Combining Aerobic & Anoxic Conditions in One Basin

    Increase Water Quality with Cyclical Aeration With increased effluent pollution restrictions on municipal wastewater treatment plants, cities are pressed to find ways to economically increase their effluent quality with little to no funding. Many new NPDES permits ...

  • Freezing Temperatures Could Place Commercial Properties in Hot Water

    With another frigid winter on the way, frozen cooling tower valves and pipe leaks are likely to wreak havoc on commercial property water usage. “As temperatures dropped below zero last year, we began receiving dozens of calls from property managers about their cooling tower’s solenoid valve freezing in the fill position and water continuously flowing out,” states David ...


    By WaterSignal

  • Start Preparing for Winter With Our Winterizing Checklist

    We’re a little over halfway through October, which means winter is near and frigid temperatures are just around the corner. Whether you’re a property manager, building owner, or maintenance professional, you can never be too prepared for what the winter has in store. Preparation is the name of the game. As subzero winter temperatures roll in, even the ...


    By WaterSignal

  • Large Precipitation Events are Critical in Replenishing Groundwater Resources

    Large precipitation events that occur about every 10 years are a critical source of recharge for replenishing groundwater resources, according to a new study by the U.S. Geological Survey and the Bureau of Reclamation. Groundwater is a vital source of water in the western United States, and will be increasingly ...

  • New Expansion for Pulsar in China

    British non-contacting measurement and control specialists Pulsar Process Measurement have strengthened the team in China with the appointment of Eric Shi as National Sales Manager. He joins the growing Pulsar team who support customers and distributors throughout Asia, supported by the Regional Head Office in Kuala Lumpur, Malaysia. Eric joins Pulsar after ten years experience working ...

  • Study of hydraulics and mixing in roof tanks used in intermittent water supply

    Roof tanks are common in low and middle income countries, due to the intermittent water supply. Their hydraulic and water mixing behaviour has not been studied. This paper presents the results of a study on mixing and water demand in roof tanks, based on physical and numerical models. Tracer tests were carried out on a real scale transparent wall laboratory model of a roof tank, and a ...


    By IWA Publishing

  • Estimation of combined sewer overflow discharge: a software sensor approach based on local water level measurements

    Combined sewer overflow (CSO) structures are constructed to effectively discharge excess water during heavy rainfall, to protect the urban drainage system from hydraulic overload. Consequently, most CSO structures are not constructed according to basic hydraulic principles for ideal measurement weirs. It can, therefore, be a challenge to quantify the discharges from CSOs. Quantification of CSO ...


    By IWA Publishing

  • Skid Systems - Case Study

    A Chemical Metering Pump is seldom used by itself. It is usually a part (ok, the part) of a chemical injection system into a process. Such a system requires various accessories, valves and controls to dispense the exact amount of chemical demanded by the application which may itself vary. Let us say if you are using chemical pump to achieve pH balance for the water. You need to measure the pH of ...


    By Aquflow

  • Valves in Water System of Heating Air Condition

    Common valves in water system of heating air condition include gate valve, globe valve and butterfly valve.   Gate vale For its moderate length, rotary adjusting rod and good regulating performance, gate valve is widely utilized in large caliber pipes.   Globe valve Globe valve is suitable for small caliber pipes for its long length, ...

  • Experimental study of hydraulics and sediment capture efficiency in catchbasins

    Catchbasins (also known as gully pot in the UK and Australia) are used to receive surface runoff and drain the stormwater into storm sewers. The recent interest in catchbasins is to improve their effectiveness in removing sediments in stormwater. An experimental study was conducted to examine the hydraulic features and sediment capture efficiency in catchbasins, with and without a bottom sump. ...


    By IWA Publishing

  • Numbers Speak Volumes: Water Distribution Assessment Increases System Operability To 84 Percent

    This large Midwest utility maintains and operates water collection, treatment, and distribution systems, as well as wastewater collection and treatment systems and stormwater management systems for its residential, business and wholesale customers in the region. To ensure the accessibility and quality of water services to meet the growing needs of the ...


    By Pure Technologies

  • Investigation into mixing in the shallow floodplain Poyang Lake (China) using hydrological, thermal and isotopic evidence

    Although mixing in lakes has significant environmental and ecological implications, knowledge of mixing dynamics for shallow floodplain lakes has received little attention. In this study, hydrological, thermal and isotopic investigations were undertaken to provide evidence for the mixing in the large, shallow floodplain Poyang Lake (China). Depth profiles of water velocity, water temperature ...


    By IWA Publishing

  • Staying dry with rising tides – miami beach - Case Study

    The City of Miami Beach, Florida, USA is a beautiful resort community nestled between the Atlantic Ocean and Biscayne Bay. Miami Beach is built on natural and man-made barrier islands. Infrastructure which ensures residents and tourists in Miami Beach aren’t regularly flooded by sea water is often taken for granted however with a changing climate it has become evident to residents that ...


    By Wapro AB

  • WaReg protects homes from flooding in Sweden - Case Study

    Location: Backaryd, Sweden Customer: Backaryds Vattenverk Problem: Backaryd Water Treatment plant backwash their filters regularly. During this process water is released into the town sewer network at a rate of 16 l/s. The towns sewer network is dimensioned to cope with 5 l/s so when it receives 16 l/s it becomes problematic for downstream residents. When the backwashing occurs, homes in ...


    By Wapro AB

  • Horsepower on the pump curve

    Now that the head capacity relationship along the X and Y axes of the pump curve has been established in Part 1 of this series, the pump curve can be used to determine the amount of horsepower required to meet the head and capacity requirements for the job. Horsepower is a unit of power equal to 550 foot pounds per second or 746 watts. Water horsepower is the minimum power ...

  • Importance of measuring UV transmittance (UVT) for UV disinfection

    UV disinfection systems disinfect water using UV light at the 254 nm wavelength. UV light at this wavelength actually destroys the DNA of microbiological material in the water which prevents dangerous viruses such as cryptosporidium and e-coli from reproducing and causing harm. UV Disinfection Dose and UV Transmittance (UVT) The effectiveness of a UV disinfection system is ...


    By Real Tech Inc.

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