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  • De Nora Water Technologies
    precious resource Water And Wastewater Treatment Technologies Made Easy DE NORA PRODUCTS MicroDPD On Line Colorimeter Chlorine Analyzer The MicroDPD analyzer uses proven DPD colorimetric technology for monitoring chlorine in both municipal and industrial applications The instrument can measure free or total chlorine in drinking water wastewater and seawater Capital Controls Series 1041A Automatic Switchover The Automatic Switchover system Series 1041 provides safe reliable switching between two gas pressure or vacuum or two liquid pressure or level sources assuring an uninterrupted supply of chemical to the application Automation of all functions switchover system initialization configuration lamp test and safety functions is done with an internal programmable logic controller for operational flexibility enhanced reliability and ease of use If needed local manual override is conveniently available for operator control to maintain continuous operation MicroChem 2 Series 4000 Transmitter Controller The MicroChem 2 is a versitile multiparameter instrument capable of being configured as a transmitter PID controller or swimming pool controller Capital Controls Series 17T2000 Amperometric Titrator The Series 17T2000 Amperometric Titrator is an analytical instrument for the electrical determination of the end point of a titration for free combined or total chlorine residual It can also be used to determine bromine iodine ozone permanganate and chlorine dioxide residuals Capital Controls Series CL500 CL1000 And CL1000B Residual Analyzers The Capital Controls CL500 residual analyzer is designed to continuously monitor free and total chlorine The analyzer is auto ranging to 20 mg l and operates using the amperometric method of measurement The amperometric method is EPA approved for on line chlorine residual monitoring in drinking water Capital Controls Series NXT3000 High Capacity Gas Feed System The Series NXT3000 High Capacity Gas Feed System is a family of vacuum operated solution feed gas dispensing components including a vacuum regulator meter assembly and ejector to meet customer needs for feeding chlorine sulfur dioxide ammonia or carbon dioxide gas The Series NXT3000 is a versatile high quality system which operates at sonic conditions eliminating the need for differential pressure regulation across the rate control valve Capital Controls Series 1870E Chlorine Residual Analyzer Capital Controls Series 1870E chlorine residual analyzer technology has been independently tested and proven to be a reliable analyzer for continuous accurate residual analysis Capital Controls Series 600 Gas Chlorinator De Nora Water Technologies developed the direct gas pressure chlorinator for applications where electricity used to operate a booster pump and water pressure required for ejector vacuum operation are unavailable More Products CONTACT INFORMATION De Nora Water Technologies 3000 Advance Lane Colmar PA 18915 UNITED STATES Phone 215 997 4000 Fax 215 997 4062 Contact Fran House Request More Information Visit Our Website FEATURED ARTICLES De Nora Water Technologies Announces Improvements To ClorTec On site Sodium Hypochlorite Generation Systems ClorTec systems have been a proven cost effective reliable and safe alternative to chlorine gas and bulk sodium hypochlorite since 1995 De Nora Water Technologies Showcases Industry Leading Water And Wastewater Treatment Solutions At WEFTEC 2015 De Nora Water Technologies will showcase its industry leading

    Original URL path: http://www.wateronline.com/ecommcenter/denora (2016-02-14)
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  • Leopold -- A Xylem Brand - Filtration and Clarification Systems
    Process With the town of Johnstown CO s water treatment plant began operating its circular clarifier systems at maximum capacity to meet summer peak demand rates consultants recommeded increasing plant capacity and using dissolved air flotation technology for their clarification process Systems Work In Series To Increase Filter Run Times Reduce Water Use And Improve Finished Water Quality The city of Florence Colorado Water Treatment Plant WTP located 75 miles south of Denver uses blended surface water taken from the city s southernmost water reservoir Dissolved Air Flotation System Removes Algae And Manganese At Evitts Creek Plant The Evitts Creek Water Treatment Plant WTP owned and operated by the city of Cumberland Maryland provides potable water for Cumberland and surrounding communities in Maryland West Virginia and Pennsylvania Clari DAF Pretreatment System Reduces Chemical Consumption Doubles Treatment Capacity Together two water treatment plants in Boulder CO have the capacity to treat 55 million gallons per day MGD When severe drought conditions restricted the source water supply of the Betasso WTP the city decided to expand the capacity of the Boulder Reservoir Water Treatment Plant WTP Dissolved Air Flotation Technology Nearly Doubles Treatment Capacity Faced with a tight capital budget a city in British Columbia required a new design for a water treatment plant capable of a maximum daily water production of 21 MPG during peak demand periods with an ultimate demand of 29 MGD Xylem Wins Contract To Double Capacity Of Water Treatment Facility In Tai Po Water Treatment Works Hong Kong Xylem a leading global water technology company dedicated to solving the world s most challenging water issues has been contracted to provide clarification and filtration systems for the expansion of the Tai Po WaterTreatment Works in Hong Kong Clari DAF System Provides Effective TOC Removal For Cambridge WTP To ensure treated water complied with the most stringent drinking water standards including the Environmental Protection Agency EPA Stage 2 Disinfectants and Disinfection Byproducts Rule State 2 DBPR the City of Cambridge MA WTP decided to implement a robust multibarrier treatment solution Xylem Announces Exclusive Agreement To Distribute Disk Filter System For Tertiary Wastewater Treatment In The US And Canada Xylem Inc a leading global water technology company dedicated to solving the world s most challenging water issues has announced an exclusive agreement with Nuove Energie S R L to distribute a cutting edge tertiary disk filter system for wastewater reuse and discharge requirements in the United States and Canada Oxelia An Ozone Enhanced Biologically Active Filtration System Xylem s Leopold Oxelia is designed for municipal wastewater treatment The ozone enhanced biologically active filtration system and multi barrier solution combines ozone filtration and analytical instrumentation to deliver optimal wastewater treatment for water reuse and discharge into sensitive waters Xylem Wins 2014 Water Reuse Equipment Manufacturer Of The Year Xylem a leading global water technology company focused on addressing the world s most challenging water issues was awarded the 2014 WateReuse Equipment Manufacturer of the Year by the WateReuse Association at their

    Original URL path: http://www.wateronline.com/ecommcenter/leopold-axylembrand (2016-02-14)
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  • Monitoring Water Quality With UVC LEDs
    the expected UVT the UV system does not deliver enough UV intensity to meet disinfection requirements The water quality will suffer presenting an immediate health risk to the community In periods where the actual UVT is higher than expected the UV system will deliver excessive UV intensity to disinfect the water which translates into unnecessarily high energy consumption For example adjusting the UV intensity for a small change in UVT from 60 to 70 percent can result in an annual energy cost reduction by as much as 33 percent depending on the size of the system By monitoring real time UVT operators can optimize the UV dose in the system avoiding the consequences of under and over dosing Traditionally UVT monitors used mercury lamps for the UV light sources Mercury lamps require a warm up time to achieve stable measurement results and so they are typically left on continuously This leads to frequent lamp replacements In contrast UVC LEDs achieve full intensity instantly allowing them to be on only when measurements are being taken which preserves the overall life of the LED Figure 2 Comparison of time to replacement for Hg lamps and UVC LEDs The mercury lamp is left on continuously while the UVC LED is operated at a 20 percent duty cycle The increased time between replacements coupled with other UVC LED benefits such as low power consumption and monochromaticity lead to lower system costs for UVC LED based instruments In addition the compact footprint of the LED means smaller detectors that can monitor multiple points along the water treatment system in a pipe in an open channel or as a battery operated handheld instrument UVT monitoring can detect organic events upstream of the UV disinfection process and further reduce costs by reducing energy consumption decreasing chemical consumption in coagulation preventing membrane fouling and extending the life of the carbon used in filtration Table 1 Cost comparison of UVT monitor using a mercury lamp versus UVC LEDs Energy cost of 0 12 kWhr Four annual replacements for the mercury lamp at 25 each Oil in water monitoring in industrial applications In industrial facilities quick and reliable monitoring of hydrocarbons help prevent excess hydrocarbons from entering boilers from exposure to the atmosphere in cooling towers or from discharge into the sewer or environment in wastewater systems Real time monitoring of petroleum hydrocarbons in water reduces costs by allowing industries to avoid discharge or pollution fines and detect early leaks in systems like heat exchangers that lead to costly repairs The aromatic hydrocarbon proportion of a crude oil is highly fluorescent in the deep UV and therefore fluorescence can be used to determine concentration Fluorescence spectroscopy detects extremely low concentrations and has high specificity that allows users to distinguish between oil types The sensitivity of fluorescence techniques is as much as 1 000 times higher than that of absorption spectroscopy enabling measurement of concentrations in the part per billion levels Traditionally light sources used in these fluorometers for deep UV

    Original URL path: http://www.wateronline.com/doc/monitoring-water-quality-with-uvc-leds-0001 (2016-02-14)
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  • UVC LEDs For Biofilm Prevention
    other locations in the system possibly to reform a new biofilm matrix In the case of marine sensors used for environmental monitoring the impact of biofilms leads to biofouling where larger multi cell organisms attach to the instrument Instruments can be adversely affected by biofouling within a week of deployment Instrument manufacturers traditionally use biocides and coatings to combat biofoul however these are being regulated out due to their environmental impact Mechanical options such as wipers while effective have a higher failure rate need to be customized for each surface and require precious power resources Because of the limitations and ineffectiveness of chemical and mechanical methods as well as a desire to reduce costs industries across the board are seeking alternative methods to prevent the formation of biofilm One promising disinfection technology that may pose a solution used for drinking water disinfection for decades is UV irradiation How UV Irradiation Works Many municipal water treatment plants use mercury lamps that emit in the UV wavelengths for disinfection Light in the UVC wavelengths from 250 to 280 nanometers nm deactivates bacteria viruses and other microbes by destroying the genetic information inside the DNA UVC irradiation offers a better method than the existing biofilm prevention options as it is non contact non chemical and can be used on a variety of materials and surface geometries UV light is effective in preventing biofilm formation by deactivating the DNA in microorganisms at the early stages of attachment to prevent the formation of a biofilm matrix Although the potential of UV irradiation for biofilm prevention has been known for some time traditional UV lamps containing mercury are not a feasible option due to their bulk fragility high power consumption and the toxic nature of mercury These lamps are also difficult to operate in cold environments LEDs that emit UVC light offer a more suitable solution that overcomes the limitations of mercury lamps They consume less power have a smaller footprint for more design flexibility and high brightness in the necessary germicidal wavelengths Additionally as a solid state light source UVC LEDs can be operated with a duty cycle to maximize the disinfection while optimizing power consumption and lifetime The amount of UVC radiation needed to prevent biofilm on any given surface is referred to as the required UV dose Some microorganisms are more susceptible than others to UVC radiation and require less exposure while others require more light for complete deactivation The effective UV dose is comprised of two factors the intensity of the light and the length of exposure time Industrial engineers and instrument designers use the relationship between these two parameters to develop an effective system The following example illustrates the design parameters to prevent biofilm formation with UVC LEDs on a flat two dimensional surface that is 10 mm x 10 mm The intensity distribution on the surface depends on the distance between the UVC LED and the surface to be irradiated the light output of the LED and the light emission

    Original URL path: http://www.wateronline.com/doc/uvc-leds-for-biofilm-prevention-0001 (2016-02-14)
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  • Coming Of Age UV-C LED Technology Update
    One of the more neglected aspects of system design using UV C LEDs may be in the area of back end electronics Back end electronics can be used in ways similar to those of mercury lamps by providing power to the LEDs as well as adding functionality to the system Back end electronics can be used to drive LEDs in pulsed or continuous modes of operation they can monitor changes in the LED itself such as changes in forward voltage or intensity which can be used in feedback modes to bring the LED back within specified operating criteria or to signal failure Back end electronics can incorporate temperature control feedback or even perform wireless data logging and because the entire system is DC the entire circuit can co locate with the LED source in a very small footprint Progression to Higher Power As mentioned earlier UV C LEDs are currently largely used in analytical products however a recent uptick since 2012 in the number of manufacturers producing UV C LEDs has opened the door for more widespread applications As indicated in Figure 3 between 2012 and 2015 UV C LED were made commercially available by seven new manufacturers with four of those having volume scale production capabilities Current single chip optical output powers are as high as 30 milliwatts mW with lifetimes in the thousands of hours Hero devices reported in the literature and engineering grade samples were excluded from consideration and this list should not be considered exhaustive of the field of manufacturers attempting to come into production System Development As those flat screen TVs enabled smaller entertainment centers and accessories the recent influx of commercial UV C LED manufacturers and the lower associated device costs have paved the way for systems developed with smaller lower cost UV LED sources However for any UV system developer wishing to exploit the technology benefits it is key to understand the various elements that combine and interact to enable an efficient UV system Figure 4 System design methods for traditional mercury lamp based UV systems have evolved considerably over the past 20 years with the use of computational fluid dynamics CFD and biodosimetry now commonplace These tools remain key to the development of UV C LED based UV systems However the starting point for design assumptions are very different due to the fundamental structural and operational differences of the light sources discussed earlier In addition and crucially the skill set needed to understand the integration of non traditional reactor designs with the unique thermal management and electronic design requirements of UV C LEDs are very different from those developed in mercury lamp UV system design Similarly as new flat screen TV technology entered the market cathode ray tube TV manufacturers found themselves with a choice of either exiting the business or acquiring new expertise Perhaps this can best be illustrated when comparing UV C LED system performance figures published over the past few years Figure 5 The three highest performing units systems

    Original URL path: http://www.wateronline.com/doc/coming-of-age-uv-c-led-technology-update-0001 (2016-02-14)
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  • Case Study: Newport News Uses Emerson Ozone Instrumentation For Safe, Effective Disinfection
    2006 Case Study Newport News Uses Emerson Ozone Instrumentation For Safe Effective Disinfection Source Emerson Process Management Rosemount By John Volbeda Wastewater Industry Manager Emerson Process Management Rosemount Analytical and Randy Hawkins pilot plant engineer Newport News Waterworks Maintaining the quality of the water supply is the top priority for municipal drinking water treatment plants across the country Water plants use several treatment processes to ensure water quality and safety and these treatment steps include disinfection Traditionally chlorine is used in both primary and secondary disinfection treatments and has been used since 1908 Some water plants are moving to ozone for primary disinfection One water utility that is taking this direction is Newport News Waterworks located in southeast Virginia Newport News Waterworks constructed a pilot plant eight years ago that uses ozone in the primary disinfection process For this pilot plant Newport News selected Rosemount Analytical ozone measurement systems from Emerson Process Management These analyzers are used for continuous measurement of ozone in the ozone contact basin Based on the success of the pilot plant the Harwoods Mill plant at Newport News switched from chlorine to ozone for its primary disinfection process in March 2002 Our pilot plant processes 50 000 gallons of water per day where the main plant processes a daily annual average of 24 million gallons of water per day The success of this pilot plant testing prompted us to also convert our Lee Hall plant to ozone It will be completed in about six months Upon completion the total system will serve over 400 000 people said Randy Hawkins pilot plant engineer Newport News Waterworks With that many people in our community relying on us it is important that we provide the best quality water possible Making the switch from chlorine to ozone for primary disinfection

    Original URL path: http://www.wateronline.com/doc/newport-news-uses-emerson-ozone-instrumentati-0001 (2016-02-14)
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  • Replacement Of Gas Chlorination System: City Takes Advantage Of Special NaOCl Dosing Unit For Reliability And Cost-Effectiveness
    and Sewer Line Maintenance Stormwater Regulations and Legislation Industrial Food Beverage Petroleum Refining All Petroleum Refining Produced Water Power Generation Water Reuse Utility Management AMR AMI and Metering Asset Management Consumer Outreach Funding Labor Resiliency SCADA Automation Source Water All Source Water Contamination Desalination Water Scarcity Water Reuse Regulations and Legislation Providers YSI a Xylem brand Hach Company Schneider Electric Neptune Technology Group Inc Evoqua Water Technologies Veolia Water Solutions Technologies ABB Measurement Products Aclara Jacobi Carbons Endress Hauser Inc KROHNE Inc Kaeser Compressors Inc Emerson Process Management Rosemount Analytical Degremont Technologies Brentwood Industries View All Providers Case Study April 5 2012 Replacement Of Gas Chlorination System City Takes Advantage Of Special NaOCl Dosing Unit For Reliability And Cost Effectiveness Source JCS Industries Inc By Cliff Lebowitz Operations management for a municipal direct water filtration plant reports achievement of a reliable and cost effective change in chlorination systems that has continued to provide for effective disinfection while better meeting safety and efficiency criteria The plant has a treatment capacity of about 150 MGD Average flow is about 50 MGD For chlorination the plant previously relied on three chlorinators capable of feeding 2000 lb of chlorine each 24 7 with typically 12 chlorine cylinder tanks delivered every two weeks and 18 cylinders on site at a time In 2006 they switched to a special vacuum driven sodium hypochlorite NaOCl delivery system that includes four 11 000 gal tanks for storage The bulk purchased NaOCl is delivered by 4500 gal tanker truck and six patented metered feeders provide a total of 1300 gal day for their treatment train via 9 different application points JCS Industries Inc Contact The Supplier Contact Details Company Profile MORE FROM JCS Industries Inc Contact Details Company Name JCS Industries Inc Address 5055 FM 2920 Spring TX 77388

    Original URL path: http://www.wateronline.com/doc/replacement-of-gas-chlorination-system-city-0001 (2016-02-14)
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  • MIOX Achieves Increased Efficacy Against Biofilm And Legionella Vs Common Biocides
    Water Reuse Utility Management AMR AMI and Metering Asset Management Consumer Outreach Funding Labor Resiliency SCADA Automation Source Water All Source Water Contamination Desalination Water Scarcity Water Reuse Regulations and Legislation Providers YSI a Xylem brand Hach Company Schneider Electric Neptune Technology Group Inc Evoqua Water Technologies Veolia Water Solutions Technologies ABB Measurement Products Aclara Jacobi Carbons Endress Hauser Inc KROHNE Inc Kaeser Compressors Inc Emerson Process Management Rosemount Analytical Degremont Technologies Brentwood Industries View All Providers White Paper February 5 2014 MIOX Achieves Increased Efficacy Against Biofilm And Legionella Vs Common Biocides Source MIOX Corporation Comparative disinfection studies using 3 oxidizing biocides and 3 commonly used non oxidizing biocides against Legionella pneumophilia Legionella pneumophilia is an aquatic organism that associates with biofilm a gelatinous layer consisting of microbial cells the polysaccharide biopolymer they produce and debris extracted from recirculating water Legionella pneumophilia films continuously erode and disperse through the water system during normal operation increasing the risk of inhaling a sufficient number of the airborne bacteria to cause Legionnaire s disease Cooling towers showers spa pools faucets and residential water systems that circulate contaminated water are capable of harboring Legionella pneumophilia leading to Legionnaire s disease Newsletter Signup SIGN

    Original URL path: http://www.wateronline.com/doc/miox-achieves-increased-efficacy-against-biofilm-and-legionella-vs-common-biocides-0001 (2016-02-14)
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