water testing panel Articles

  • Effects of sulfate and nitrate on the taste of water: a study with a trained panel

    The role of sulfate and nitrate in the taste of drinking water is not entirely clear. Taste threshold concentrations (TTCs) were estimated for these two species by the 3-AFC method by a trained panel, as sodium and calcium salts. In both cases TTCs for nitrate were about 100 mg NO3/L, twice the usual reference value of international recommendations. TTCs for sulfate were about 160 mg ...


    By IWA Publishing

  • Pilot-Scale Biofilter Test for Treating Zimpro Odors

    The thermal sludge conditioning process of U.S. Filter/Zimpro Corporation, Rothschild, Wisconsin (Zimpro process) is primarily used to improve dewatering characteristics of the waste sludge. The process entails a partial breakdown through oxidation and hydrolysis of complex, high molecular weight organic compounds, such as, proteins, fibers, carbohydrates, and fats. The partial breakdown of ...


    By PRD Tech, Inc.

  • Allocation of water consumption in multipurpose reservoirs

    The Intergovernmental Panel on Climate Change Special Report on Renewable Energy Sources represented a benchmark in the assessment of water consumption from electricity production. The numbers for hydropower ranged from very low to much larger than the other renewable technologies, partly explained by methodological problems. One of the methodological shortcomings identified was the lack of ...


    By IWA Publishing

  • UV technology - unique in water disinfection

    Due to its undisputable Success &  Efficiency in destroying Cryptosporidium and Combined Chlorine, The Centers for Disease Control and Prevention Recommend installing UV Systems It has taken many years of testing to convince the pool market that the most reliable and best available option for treating and disinfecting water is through using Ultraviolet (UV) technology. UV systems ...


    By ESCO International (EI)

  • Compost in the mix for storm water management

    Bioretention areas, also known as rain gardens, are increasingly being used to capture and treat storm water runoff from impervious surfaces such as roofs, sidewalks and parking lots. These landscaped areas often feature native plants installed in an engineered soil mixture that includes compost. “Bioretention areas or rain gardens are an attractive storm water Best Management Practice (BMP) ...


    By BioCycle Magazine

  • Anglian water Cryptosoridium outbreak - Case Study

    Pitsford Drinking Water Site, England In June 2008, a rabbit was located in the wash water tank at the Pitsford Drinking Water Plant of Anglian Water, leading to contamination of the treatment works with Cryptosporidum, a chlorine resistant parasitic micro-organism. The parasite was detected on June 24 and, following consultation with health and local authorities, a notice to boil ...


    By atg UV Technology

  • Constraints on foreign aid effectiveness in the water, sanitation, and hygiene (WaSH) sector

    Numerous studies have sought to empirically test the effectiveness of foreign aid as a tool for international development, with often inconsistent or contradictory results. New sources of disaggregated aid data now allow researchers to test the impact of individual sectors of aid on sector-specific outcomes. The paper investigates the effectiveness of foreign aid in the water, sanitation, and ...


    By IWA Publishing

  • Development of water scenarios for large lakes in Europe: the case of Lake Peipsi

    Qualitative or quantitative description of the future by developing scenarios is a key method when taking a long-term view, e.g., up to 2050. Previously the time frames covered by the scenarios have usually been no more than 20 years. This period can be too short for achieving long-term goals when, for example, testing watershed management plans. This paper is an attempt to introduce and ...


    By IWA Publishing

  • Emergency tank showers specified for Major water utility companies

    Personnel within the water utilities industry are often exposed to remote and demanding environments due to the dangerous chemicals, such as sulphites and chloride, used in water treatment. To protect the safety of the workforce International and European standards state that emergency safety equipment should be installed within 10 seconds’ reach and on the same level as a potential hazard. ...

  • Community water fluoridation predicts increase in age-adjusted incidence and prevalence of diabetes in 22 states from 2005 and 2010

    Community water fluoridation is considered a significant public health achievement of the 20th century. In this paper, the hypothesis that added water fluoridation has contributed to diabetes incidence and prevalence in the United States was investigated. Panel data from publicly available sources were used with population-averaged models to test the associations of added and natural fluoride ...


    By IWA Publishing

  • Drought Forces Push to Recycle, Reuse and Potential in Brackish Water for Oil & Gas Industry: Interview with BioLargo CEO

    UPTICK Interview: BioLargo's AOS Filter Delivers Abundant Clean Water Even In Drought The headlines are full of discussion on water shortages and drought with few options consistently noted beyond the need to conserve and manage the precious resource. To gain perspective on the problem and explore viable solutions UPTICK Newswire interviewed ...


    By Biolargo, Inc.

  • Remote controlled `Pit Hog™` dredge removing sludge from aeration lagoons at Los Alisos, California, Waste Water Treatment Plant

    The Los Alisos Water District Water Reclamation Plant is removing raw sewage solids, decayed algae and microorganisms, and algae-laden sludge from its aeration lagoons using a Liquid Waste Technology (LWT) remote controlled lagoon dredging system. The tertiary wastewater treatment plant treats four million gallons per day. Officials of the Lake Forest, California facility initiated the buildup ...

  • Oil Smart® Spill Prevention Technology

    See Water, Inc. is a manufacturing firm that is located in San Jacinto, CA. SEE Water, Inc. designs and manufacturers water pump controls, high liquid alarms, and pump control panels, with a primary focus on the design of Oil Smart® Technology.Oil Smart Technology has the unique ability to differentiate between oil and water; the technology will automatically pump water without the risk of ...


    By See Water, Inc.

  • New TOC sensor wins Gold IBO award for portable instrument design

    In 2006, the USEPA singled out the distribution system as the most vulnerable component of a utility’s drinking water system. In response, many waterworks are taking a closer look at how they may protect the public’s drinking water. One option is to place online water quality panels throughout the distribution system to detect a change in the baseline water quality. The cost of implementing a ...


    By GE Analytical Instruments

  • Evaluation of Inactivation of Cryptosporidium parvum Oocysts in Recreational

    Purpose: To determine the ability of the Hanovia UVP 61 water disinfection system to nactivate Cryptosporidium parvum oocysts suspended in recreational (water park) water.Methods and materials:Test water: The water used for this test was from the Adventure Island water park, Tampa, Florida. A 200 gallon (750 L) volume had been  collected on October 24, 1999, and delivered to Clancy ...

  • Project profile - Foxxtown Apartments Sudlersville, Maryland arsenic, iron & manganese removal

    Background AdEdge Technologies Inc. (AdEdge) was selected in 2006 by McCrone Engineers and the awarded contractor, Maryland Construction to design, build, and install a full scale AD26GS+ arsenic, iron, and manganese treatment system for their customer Foxxtown Apartments in Sudlersville, Maryland to meet the new EPA arsenic standard. The treatment system was based on the design ...

  • Monitoring the oxygen transfer efficiency of full-scale aeration systems: investigation method and experimental results

    This paper reports the results of a series of off-gas tests aimed at monitoring the evolution of the oxygen transfer efficiency in an urban wastewater treatment plant (3,500 population equivalent) located in Tuscany (Italy). The tests were conducted over a 2-year period starting with the testing of the aeration system. It was found that in the absence of membrane-panel cleaning operations, the ...


    By IWA Publishing

  • Solar heat assisted solid desiccant dehumidifier saved over 30% electricity for air conditioning in Kish Island

    Thermal energy exploited from solar heater panels has been recently assisted in a desiccant wheel air conditioning demonstration project in Kish Island, Persian Gulf, Iran. “This demonstration unit was completed in late 2008 and successfully tested afterwards” said Pejman Izadkhast, M.E., the project manager, “simple solar water heating panels by total surface of 48m2 were utilized to supply ...

  • Monitoring System for Hydrologic Evaluation of Landfill Covers

    Three test sections were constructed and instrumented to assess the hydrologic behavior of earthen final covers at two municipal solid waste landfills. A traditional design using a “resistive barrier” was used for two of the test sections, whereas an alternative design using a “capillary barrier” was used for the third test section. The test sections were built in two distinctly different ...


    By ASTM International

  • Project profile - quail ridge prescott, AZ arsenic treatment system

    Background The Quail Ridge Community owns and operates the Quail Ridge Community water system located near Prescott, AZ. The water system is served by two wells that provide drinking water for the community’s residents at a maximum of 160 gallons per minute (gpm) with an approximate arsenic concentration of 13 parts per billion (ppb). After a successful pilot, the site was able to ...

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