point-of-entry water Articles

  • Point of use/point of entry treatment with LFNano

    EconoPure Water Systems EconoPure Water Systems designs and manufactures highly economical, scalable, low‐fouling membrane systems. The Company leverages the proprietary low‐fouling nanofiltration (“LFNano”) system consisting of a unique membrane element that is designed to avoid particulate fouling, biofouling and scaling. As the name suggests, the LFNano utilizes ...

  • The Internet of Water Is Saving Lives While Battling Pollution

    The Problem A condition known as Legionnaires' disease has made headlines after it killed a dozen people in Flint, Michigan in 2014 and 2015 and sickened hundreds in  ...


    By Griswold Water Systems

  • Rhode Island Wastewater Plants Key To Water Quality Reversal

    Despite evidence that often points to the contrary, many bodies of water around the country stand as prime examples of how environmental quality can be improved with the proper will and effort. Take, for instance, Narragansett Bay, located on the north side of the Rhode Island Sound. Located near some of America’s oldest settlements, the bay has ...


    By KLa Systems, Inc.

  • Hutchinson Finds a Quick Reliable Fix to Cavitation Damage

    The Hutchinson Kansas Water Plant gets its water from twenty wells. The water is pumped out of the wells and into a reverse osmosis water treatment center to purify and ensure safe drinking water. At that point, a portion of the water is taken off from the main line, run through the reverse osmosis system and then mixed back with the well water.  This is used to lower the total dissolved ...


    By Singer Valve Inc.

  • The rehabilitation of 43 year old waste lagoons

    In 1967 the City of Concordia, MO built a segmented lagoon system to handle the small town’s waste requirements. The main industry in Concordia is a Tyson renderings plant, and the lagoon system was designed to also handle that plant’s final waste and water polishing requirements. The lagoon system was a relatively standard design, consisting of an 18.7 acre primary lagoon, a 5.6 acre ...


    By Reliant Water Technologies

  • Why does modern aeration technology make the treasurer happy?

    The aerzen combined system provides optimum efficiencies at the wallau wastewater treatment plant The combination of different technologies for air conveying enablesoptimal energy use of oxygen for biological degradation processes in wastewater treatment plants. Concrete savings resulting from the use  of AERZEN machines demonstrate this in practice at the Wallau plant.  In 2016, ...


    By Aerzen USA Corporation

  • A clean job for Klinger bottle washing systems - Case Study

    Application: Bottle washing equipment Xylem scope: The Lowara Vogel Series e-SHS stainless steel, LSB and e-NSCS cast iron end suction pumps were the right solution for moving water and corrosive liquids in Klinger’s bottle washing machines. The equipment provided combines high efficiency with flexibility and can easily be mounted in small spaces. ...


    By LOWARA - a Xylem brand

  • Water: At a Tipping Point

    The Stockholm World Water Week’s focus on “Water for Development” comes at an opportune time. Water as a sector in world affairs is reaching a tipping point. Over the next two decades and more, the global push for food and energy security and for sustaining urbanization will place new and increasing demands on the water sector. Ours is a world of ‘thirsty ...


    By DelAgua Group

  • NEW BLOG ENTRY: Water Monitoring Goals

    The concept of biological filtration has become a common means to remove organics prior to disinfection to minimize formation of disinfection by-products. However, the tools available to assess biological growth tendencies in biological filters are limited. Heterotrophic Plate Counts and other culture-based methods take days to obtain results, only measure very small portions of the true ...


    By LuminUltra Technologies Ltd.

  • A Case for Point-of-Use RO Ultrapure Water Systems

    ULTRAPURE WATER CRITERIA - AN OVERVIEW 'Pure water' is a relative term. Practically speaking, no water, naturally occurring or treated by man, consists solely of H2O molecules. Forever in pursuit of achieving equilibrium with its surroundings, water has unique characteristics that result in its ability to dissolve most matter. This property of water to dissolve and transport materials is ...

  • A critical evaluation of two point-of-use water treatment technologies: can they provide water that meets WHO drinking water guidelines?

    Point-of-use (POU) technologies have been proposed as solutions for meeting the Millennium Development Goal (MDG) for safe water. They reduce the risk of contamination between the water source and the home, by providing treatment at the household level. This study examined two POU technologies commonly used around the world: BioSand and ceramic filters. While the health benefits in terms of ...


    By IWA Publishing

  • Demonstration and evaluation of germicidal UV-LEDs for point-of-use water disinfection

    Ultraviolet (UV) irradiation is a common disinfection option for water treatment in the developed world. There are a few systems installed in developing countries for point-of-use treatment, but the low-pressure mercury lamps currently used as the UV irradiation source have a number of sustainability issues including a fragile envelope, a lifetime of approximately one year, and they contain ...


    By IWA Publishing

  • Point-of-use chlorination of turbid water: results from a field study in Tanzania

    Household-based chlorine disinfection is widely effective against waterborne bacteria and viruses, and may be among the most inexpensive and accessible options for household water treatment. The microbiological effectiveness of chlorine is limited, however, by turbidity. In Tanzania, there are no guidelines on water chlorination at household level, and limited data on whether dosing guidelines ...


    By IWA Publishing

  • Remote Sensing Techniques to detect Surface Water Quality Constituents in Coastal and Inland Water Bodies from Point or Non Point Pollution Sources

    This study demonstrates that point and non-point pollution sources in coastal and inland water bodies can be identified and monitored using remote sensing techniques so early corrective action can be take to prevent or minimize Harmful Algae Blooms (HAB’s). By tracking these changes in the remote sensing images could be very beneficial in establishing cleanup and restoration efforts for improving ...

  • Hom’: a simple point of use water treatment device

    This study sought to explore a locally assembled ‘Hom’ point of use water treatment device by assessing aspects of its performance and possible effects of using it on compliant households and communities. The conceptual framework highlights poverty and environmental degradation as causes and consequences of one another, with ill-health caused by water-borne diseases reinforcing both to form a ...


    By IWA Publishing

  • Analytical Devices for the Measurement of Water Vapor and Hydrocarbon Dew-Point in Natural Gas

    Introduction The determination of water vapor (water dew point) is crucial in the processing, custody transfer and transport of natural gas. High levels of water vapor in a natural gas stream can lead to a number of problems which include the formation of hydrates and the contribution to corrosion of plant and equipment. Furthermore, water vapor present in natural gas streams affects the ...

  • The relationship between technology and functionality of rural water points: evidence from Tanzania

    This paper presents an analysis of the relationships between technology of water point, management related practices and functionality over time through an extensive water point mapping study made in 15 rural districts of Tanzania, which covered 15% of the total rural population of the country. Results show irregular functionality rates at district level by technology, but reveal statistical ...


    By IWA Publishing

  • A compact point-of-use water purification cartridge for household use in developing countries

    Simple, low-cost household interventions are known to be effective in lowering the incidence of waterborne diseases in developing countries. However, high costs along with operational and maintenance issues have prevented the successful adoption of these interventions among the affected communities. To address these limitations, a cost-effective, gravity-driven water purification cartridge has ...


    By IWA Publishing

  • Water quality monitoring with online change-point detection methods

    We develop an approach for water quality time series monitoring and contamination event detection. The approach combines affine projection algorithms and an autoregressive (AR) model to predict water quality time series. Then, we apply online change-point detection methods to the estimated residuals to determine the presence, or not, of contamination events. Particularly, we compare the ...


    By IWA Publishing

  • Are renewables approaching a tipping point?

    The REN21 Renewables 2007 Global Status Report presents information about the current status of renewable energy around the world. The report is a joint project of the Worldwatch Institute and REN21 (the Renewable Energy Policy Network for the 21st Century) and was initiated in 2005. The 2007 edition is the third in the series. Investment Trends: This year’s report finds a dynamic, rapidly ...


    By Worldwatch Institute

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