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  • Wastewater Measurement
    adding results from each unit process upstream into the next operation Determination Of Polycyclic Aromatic Hydrocarbons In Seafood Polycyclic Aromatic Hydrocarbons PAHs are a large group of organic compounds found naturally in the environment PAHs are monitored by the US Environmental Protection Agency due to their carcinogenic characteristics Determination Of Hexanal In Foods Utilizing Dynamic Headspace Hexanal is one of many well documented aromatic components that contribute to flavor and aroma in common consumer food products containing omega 6 fatty acids Hexanal content is also used to measure the oxidative status of foods rich in omega 6 fatty acids Validation Of Environmental Water Methods On One System Water quality laboratories across the nation are faced with both a rising level of water quality awareness amongst the general public as well as rising costs in water quality monitoring As a result laboratories are looking for more efficient ways to provide higher quality monitoring Analyzing Total Organic Carbon In Sea Water The analysis of Total Organic Carbon TOC in seawater can be both challenging and expensive The concentration of organic carbon in seawater is of considerable interest The effect this matrix can have on TOC analyzers can lead to rapid consumable turnover costly maintenance and repairs Dissolved Oxygen Measurement In A Wastewater Treatment Plant Breakdown of organic wastes entering a wastewater treatment plant is accomplished by using a biomass or blend of beneficial microscopic organisms bacteria and solids This converts the non settleable solids dissolved and colloidal matter into settleable solids carbon dioxide water and energy Lab Gas Sub Metering Accuracy Improves With Thermal Flow Meters To Save Money Facility administrators will find the advanced ST100 Series Thermal Mass Air Gas Flow Meter from Fluid Components International FCI helps them improve the accuracy of specialty gas point of use and sub metering operations to achieve accurate billing in their labs for better cost tracking and control Improved Efficiencies In TOC Wastewater Analysis For Standard Method 5310B And EPA Method 415 Total organic carbon TOC measurement is of vital importance to the operation of water treatment due to organic compounds comprising a large group of water pollutants TOC has been around for many years and although it is a relatively simple analysis in theory operational efficiency is paramount More Wastewater Measurement Application Notes WASTEWATER MEASUREMENT PRODUCTS Service Training and Rentals Siemens Process Instrumentation Service group provides a highly skilled staff of competent trained engineers and specialists to provide service and support Valve Positioners Precise and Intelligent For more than 30 years Siemens valve positioners have provided safe uninterrupted performance for process industries worldwide Our valve positioners control a broad range of pneumatic actuated rotary and linear valves and specialty tasks like damper drives with absolute reliability Siemens positioners meet changing market needs and expectations Head Transmitter SITRANS TH the smallest in our family suitable for everything from simple applications right up to PROFIBUS and Foundation Fieldbus Field Transmitter SITRANS TF is used where other transmitters can t cope One main point is its

    Original URL path: http://www.wateronline.com/solution/wastewater-measurement (2016-02-14)
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  • Wastewater - Analysis
    Challenge Faced with the challenge of meeting environmental monitoring legislation Korsnäs Gävle needed a way to monitor water from their heat exchangers for contamination before discharging it to the sea Additionally the board and paper manufacturer required new sensors for continuous monitoring of pH dissolved oxygen and water temperatures from effluent emissions in their basins and ponds In this case study learn how Korsnäs Gävle implemented a wireless sensor network to quickly achieve compliance and meet its monitoring needs How To Control Activated Sludge With Online Sensors The goal for domestic wastewater treatment in the 21st century should be to have a minimal carbon footprint and to be 100 self sustainable with regards to energy carbon and nutrients while achieving a discharge or reuse quality that preserves the quality of receiving waters Water Environment Research Foundation WERF 2009 Sustainability with respect to energy requires both conservation and production By Dr Robert Smith Ph D P E BCEE YSI a Xylem brand Low WWTP Operating Costs And High Water Quality It s Possible Providing the best value to wastewater customers requires a team of operators that have a deep sense of ownership and are committed to continuous improvement By Patrick Higgins Case Study Continuous Online Monitoring Of Nitrate And Sludge Using UV VIS Spectroscopic Sensor Monitoring nitrates total suspended solids and sludge volume concentrations ensures effluent quality which is critical for meeting water quality standards for various regulatory agencies By Endress Hauser Inc More Wastewater Analysis White Papers Case Studies WASTEWATER ANALYSIS PRODUCTS Advanced Electronics For Zirconium Oxide Oxygen Probes The zirconium oxide sensing technology for measuring the excess oxygen in combustion flue gases has gained prominence over the past several decades This versatile electronics is specifically designed to run most O2 probes manufactured The large backlit LCD display makes it easy to set up and operate Fully automatic calibrations may be executed from this electronics with the addition of a small solenoid box for switching calibration gases Aztec 600 Low Range Manganese Analyzer The Aztec 600 Low Range Manganese Analyzer AW634 offers reliable and accurate on line analysis of manganese up to 0 10 ppm Mn AS950 Refrigerated Samplers The AS950 Refrigerated Sampler base is designed to endure humid and highly corrosive environments minimizing damage caused by corrosive gases rodents and standing water to guarantee environmental integrity Capital Controls Series WP70CV3 Gas Feeders Easy to install each Series WP70CV3 wall panel feeder is factory tested and needs no field adjustment prior to start up Eleven different flowmeter capacities ranging from 5 to 3000 PPD 100 g h to 60 kg h provide versatility in meeting gas flow requirements CNSolution 9310 On Line Cyanide OI Analytical s CNSolution 9310 On line Cyanide Analyzer is designed to measure available cyanide in precious metal leaching solutions by USEPA Method OIAA 1677 and ASTM D 6888 09 Unlike traditional techniques the gas diffusion amperometry technique used in these methods is free of interferences from copper and metallic sulfides The 9310 On line Cyanide Analyzer

    Original URL path: http://www.wateronline.com/solution/wastewater-analysis (2016-02-14)
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  • Wastewater Flow Control & Measurement
    course when it comes to international approvals or industry standards our measuring devices reliably meet the demands of the increasingly complex tasks found in the process industry Vortex Flow Meters SITRANS FX300 vortex flow meters provide accurate standard volumetric and mass flow measurement of steam gases and liquids as an all in one solution with integrated temperature and pressure compensation for a broad range of industries Coriolis Mass Flow Meter Coriolis mass flow meter systems sensors and transmitters utilize the latest technology for high performance More Wastewater Flow Control Measurement Products WASTEWATER FLOW CONTROL AND MEASUREMENT PODCASTS Measuring Flow In A Partially Filled Pipe Accurate partially filled pipe measurement is essential when dealing with variable stormwater flows or over sized community systems built for future growth In Europe new stormwater regulations requiring treatment before release are driving a change in measurement that will likely be seen in the U S in the not too distant future Helping Customers Make Informed Decisions Badger Meter has 10 metering technologies that exist in the marketplace so there is a lot of variety in what they do Brian Kettner Marketing Manager with Badger Meter sat down with Water Online Radio to talk about the company and what they are currently focusing on Combating I I With Sensor Technology Hampton Roads Sanitation District is using flow monitoring to help get inflow and infiltration I I out of the sewers Learn why this method will save the municipality millions versus alternative approaches Flow Meters Long Term Energy Savings Cost Efficiency And Low Maintenance Endress is very well known for instrumentation in several different markets such as chemical food and beverage mining life sciences and oil and gas but they are also in the water and wastewater market Water is a resource that we all need and it s very important that we monitor this resource especially with some of the drought conditions seen in the news today A New Approach To Accurate Water Flow Management Accurate flow measurement is often overlooked at a water treatment plant Many operators look at flow as being what it is In reality accurately measuring your plant s flow s is critically important for operational efficiency from back washing to chemical dosing and a host of other processes Diagnosing And Fixing Flow Measurement Problems Utility personnel and engineers want to know more now more than ever due largely to drought and water scarcity concerns according to Greg Webster of McCrometer More Flow Control and Measurement Podcasts Newsletter Signup SIGN ME UP WASTEWATER FLOW CONTROL MEASUREMENT APPLICATION NOTES Energy Measurement Tools Make Processes More Efficient While Reducing Costs Rising energy prices have made accurate energy measurement a hot topic in recent decades The need for accurate measurement technologies extends to many different application areas including heating and cooling compressed air steam production and distribution heavy fuel oil consumption energy monitoring and custody transfer In response new technology is being developed that integrates tasks previously requiring several measurement devices Lab Gas Sub Metering

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  • Wastewater Instrumentation
    and Rentals Siemens Process Instrumentation Service group provides a highly skilled staff of competent trained engineers and specialists to provide service and support Valve Positioners Precise and Intelligent For more than 30 years Siemens valve positioners have provided safe uninterrupted performance for process industries worldwide Our valve positioners control a broad range of pneumatic actuated rotary and linear valves and specialty tasks like damper drives with absolute reliability Siemens positioners meet changing market needs and expectations Head Transmitter SITRANS TH the smallest in our family suitable for everything from simple applications right up to PROFIBUS and Foundation Fieldbus Field Transmitter SITRANS TF is used where other transmitters can t cope One main point is its rating of IP67 Temperature Measurement SITRANS T temperature measurement devices can be connected to many different thermocouples and resistance thermometers as well as mV and resistance sensors The SITRANS T temperature transmitters are available as intrinsically safe explosion proof and non sparking versions and also as non hazardous Pressure Transmitter Our SITRANS P transmitters stand for measurement precision ruggedness and maximum user friendliness And of course when it comes to international approvals or industry standards our measuring devices reliably meet the demands of the increasingly complex tasks found in the process industry Vortex Flow Meters SITRANS FX300 vortex flow meters provide accurate standard volumetric and mass flow measurement of steam gases and liquids as an all in one solution with integrated temperature and pressure compensation for a broad range of industries Coriolis Mass Flow Meter Coriolis mass flow meter systems sensors and transmitters utilize the latest technology for high performance More From Wastewater Instrumentation Products WASTEWATER INSTRUMENTATION PODCASTS Measuring Flow In A Partially Filled Pipe Accurate partially filled pipe measurement is essential when dealing with variable stormwater flows or over sized community systems built for future growth In Europe new stormwater regulations requiring treatment before release are driving a change in measurement that will likely be seen in the U S in the not too distant future Helping Customers Make Informed Decisions Badger Meter has 10 metering technologies that exist in the marketplace so there is a lot of variety in what they do Brian Kettner Marketing Manager with Badger Meter sat down with Water Online Radio to talk about the company and what they are currently focusing on Data Validation Accurate Measurements Every Time Swan Analytical USA manufactures water quality analyzers for continuous online monitoring they cover a wide range of variables ranging from ammonia fluorides PHs and turbidity UVT LED Sheds Light On UV Disinfection Learn why measuring UV transmittance is so important to efficient disinfection and how LED helps get you there Everything You Need To Know About Ultrasonic Flow Meters Bill McDowell of Blue White Industries walks the Water Online Radio audience through the function and benefits of ultrasonic flow meters Are You Over Treating Your Water Discover Optimization Randy Fuller industrial applications development manager with Hach Company relates some common operational mistakes at wastewater treatment plants and how they can be remedied Combating I I With Sensor Technology Hampton Roads Sanitation District is using flow monitoring to help get inflow and infiltration I I out of the sewers Learn why this method will save the municipality millions versus alternative approaches OEM Leaders Weigh In On Water s Future By collaborating with so many different companies in the water sector Revere Control Systems has developed a robust sense of where things are headed More Wastewater Instrumentation Podcasts WASTEWATER INSTRUMENTATION Process instruments are used widely in water and wastewater treatment plants to monitor the effluent quality However their applications are not limited to monitoring effluent quality These water and wastewater quality monitoring devices can be applied throughout the network of collection treatment and disposal Instrumentation can give guarantee of proficient treatment processes of water quality parameters such as turbidity pH ORP conductivity and dissolved oxygen Instrumentation is done in the following aspects Flow measurement Stage Level measurement Physical and chemical water quality measurement Biological water quality measurement Water sediment and biota samplers Data storage and management Measurement Techniques include Gravimetric analysis or simply weighing Colorimetry or spectrophotometry Titration and Mass Spectrometry Platforms on which instrumentation can be carried out include Stationary vertical profilers Used for in situ sampling Flow through systems Most research ships have built in flow through systems that constantly circulate water collected a few meters from the surface Towed vehicles towed vehicle such a system is able to provide a continuous series of data points for remote sensing applications where transect lines can follow the flight paths of a remote sensor Moored platforms These stationary or Eulerian platforms offer data streams synoptically that match with satellite based imagers Automated underwater vehicles Autonomous Underwater Vehicles AUVs afford their own propulsion there by allowing high resolution sampling of the ocean s interior in multiple directions Some of the instruments used in water management are Pressure Transmitters General Service Gauges Pressure Regulators Digital Panel Meters Process Calibrators Thermometers Differential Pressure Gauge and Switches Multi Point Thermocouple Displays HART Calibrator Communicator Newsletter Signup SIGN ME UP WASTEWATER INSTRUMENTATION APPLICATION NOTES All WirelessHART Devices Are Not Created Equal Energy Measurement Tools Make Processes More Efficient While Reducing Costs Determination Of Polycyclic Aromatic Hydrocarbons In Seafood Determination Of Hexanal In Foods Utilizing Dynamic Headspace Validation Of Environmental Water Methods On One System Analyzing Total Organic Carbon In Sea Water Dissolved Oxygen Measurement In A Wastewater Treatment Plant Lab Gas Sub Metering Accuracy Improves With Thermal Flow Meters To Save Money Improved Efficiencies In TOC Wastewater Analysis For Standard Method 5310B And EPA Method 415 Analysis Of Pesticide Residue In Spinach Using The AutoMate Q40 An Automated QuEChERS Solution More Wastewater Instrumentation Application Notes WASTEWATER INSTRUMENTATION VIDEOS Flygt Experior Pumping Solution Guaranteed Clog Free Pumping The Flygt Experior pumping solution combined the superior functionality of N technology premium efficiency motors and intelligent controls to offer the ultimate in efficient clog free pumping Benefits Of Process Monitoring Examined Wastewater analysis at the treatment plant has traditionally been

    Original URL path: http://www.wateronline.com/solution/wastewater-instrumentation (2016-02-14)
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  • Wastewater Management
    adding results from each unit process upstream into the next operation Determination Of Polycyclic Aromatic Hydrocarbons In Seafood Polycyclic Aromatic Hydrocarbons PAHs are a large group of organic compounds found naturally in the environment PAHs are monitored by the US Environmental Protection Agency due to their carcinogenic characteristics Determination Of Hexanal In Foods Utilizing Dynamic Headspace Hexanal is one of many well documented aromatic components that contribute to flavor and aroma in common consumer food products containing omega 6 fatty acids Hexanal content is also used to measure the oxidative status of foods rich in omega 6 fatty acids Validation Of Environmental Water Methods On One System Water quality laboratories across the nation are faced with both a rising level of water quality awareness amongst the general public as well as rising costs in water quality monitoring As a result laboratories are looking for more efficient ways to provide higher quality monitoring Analyzing Total Organic Carbon In Sea Water The analysis of Total Organic Carbon TOC in seawater can be both challenging and expensive The concentration of organic carbon in seawater is of considerable interest The effect this matrix can have on TOC analyzers can lead to rapid consumable turnover costly maintenance and repairs Dissolved Oxygen Measurement In A Wastewater Treatment Plant Breakdown of organic wastes entering a wastewater treatment plant is accomplished by using a biomass or blend of beneficial microscopic organisms bacteria and solids This converts the non settleable solids dissolved and colloidal matter into settleable solids carbon dioxide water and energy Lab Gas Sub Metering Accuracy Improves With Thermal Flow Meters To Save Money Facility administrators will find the advanced ST100 Series Thermal Mass Air Gas Flow Meter from Fluid Components International FCI helps them improve the accuracy of specialty gas point of use and sub metering operations to achieve accurate billing in their labs for better cost tracking and control Improved Efficiencies In TOC Wastewater Analysis For Standard Method 5310B And EPA Method 415 Total organic carbon TOC measurement is of vital importance to the operation of water treatment due to organic compounds comprising a large group of water pollutants TOC has been around for many years and although it is a relatively simple analysis in theory operational efficiency is paramount More Wastewater Management Application Notes WASTEWATER MANAGEMENT PRODUCTS Compit Pressure Sewer System Does one size fits all fit your design requirements With more than 300 000 grinder pumps in successful service since the early 1980s Flygt understands the importance of pump selection in the overall performance of your pressure sewer system That s why Flygt Compit Pressure Sewer Systems offer two proven grinder pump technologies to better meet your specific needs mdash progressive cavity or centrifugal hydraulics Service Training and Rentals Siemens Process Instrumentation Service group provides a highly skilled staff of competent trained engineers and specialists to provide service and support Gorman Rupp s 6500 Series Standard Horizontal End Suction Centrifugal Pumps 6500 Series end suction centrifugal pumps are based on the proven technology

    Original URL path: http://www.wateronline.com/solution/wastewater-management (2016-02-14)
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  • Pump Station Monitoring
    the new controls include a maintenance log feature which displays periodic recommended operation and maintenance instructions and makes lubrication suggestions based on actual pump run times and an I O Status screen that displays controller digital and analog I O status QUICKSMART System Controls also offers significant help and troubleshooting support and a Spanish language option The 7 65K Color TFT LCD Touch Screen HMI controller is UL listed NEMA 4 Rated when installed in an enclosure and is protected by a surge protective device SPD and a 5 year pro rated warranty John Meunier Cont Flo CF Vertical Bar Screen Screenings removal is an essential component of efficient headworks design Removing undesirable inorganic material from the raw influent greatly reduces wear and O M requirements in the downstream processes These criteria are successfully met with the very efficient and robust Cont Flo Bar Screen With over 800 units already in operation the heavy duty Cont Flo has repeatedly proven its ability to provide simple long lasting service in wastewater pump station and stormwater applications With over 800 installations worldwide the Cont Flo Bar Screen is a proven reliable component of John Meunier pretreatment products Flygt Flush Valve 4901 4910 Automatic and continuous sump desludging Flygt s Flush Valve provides a simple effective and fully automatic way of continuously keeping pump sumps free of sludge by flushing the sump at the beginning of every pumping cycle Sedimentation in the sump is greatly reduced and unpleasant odors in and around the pumping station are virtually eliminated Submersible Mixed Flow Column Pump Type ABS AFLX PE4 To PE6 Submersible mixed flow column pump type ABS AFLX series are used everywhere where large volumes of process water or wastewater containing solid effluent must be pumped up to approx 25 m 82ft Submersible Sewage Pump Type ABS XFP CB Plus Submersible sewage pump type ABS XFP CB Plus is designed for municipal and industrial wastewater equipped with premium efficiency IE3 level motor Suitable for clean water and wastewater sewage with sludge and high contain of rags solids and fibrous material Submersible Sewage Pump Type ABS XFP 80C 201G Tough reliable submersible pumps with Premium Efficiency motors from 2 4 to 40 2 hp For the pumping of wastewater and sewage from buildings and sites in private commercial industrial and municipal areas More Pump Station Monitoring Products PUMP STATION MONITORING PODCASTS An Alternative To Design Build San Francisco has embarked upon a 6 9 billion 20 year initiative to completely renovate the sewer system That includes the pipelines the pump stations and the treatment plants of the system Pump Station Energy And Maintenance Solved Flat topography low elevation and high rainfall conspire to make collection and treatment a hassle in Jefferson Parish LA requiring more than 500 lift stations to get the job done Learn how a new wastewater pumping system virtually eliminated maintenance and reduced energy consumption by as much as 75 S L Separates Itself From The Pack Frank Rebori President of Smith

    Original URL path: http://www.wateronline.com/solution/pump-station-monitoring (2016-02-14)
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  • Wastewater Management Pumps and Valves
    Cypress Creek WWTP in Florence AL uses an extended aeration activated sludge process with a design capacity of 20 million gallons per day MGD Cypress Creek serves mostly residential customers but about 15 percent of its influent comes from industrial sources and their discharge to the plant contains large amounts of fats oils and grease FOG Clogging Problem Solved Maintenance Cost Reduced 15 Percent Less Power Consumption Delivered A WWTP facility in Indiana serves a six square mile area and has historically experienced pronounced peak flows caused by nearly one fourth of its collection system consisting of combined storm water and sanitary sewer lines Quick Response Maintenance Team Minimizes Cost And Impact Of Pump Outage N pumps End Clogging Problems Improve Efficiency More Pumps Valves White Papers Case Studies WASTEWATER MANAGEMENT PUMPS AND VALVES PRODUCTS Compit Pressure Sewer System Does one size fits all fit your design requirements With more than 300 000 grinder pumps in successful service since the early 1980s Flygt understands the importance of pump selection in the overall performance of your pressure sewer system That s why Flygt Compit Pressure Sewer Systems offer two proven grinder pump technologies to better meet your specific needs mdash progressive cavity or centrifugal hydraulics Gorman Rupp s 6500 Series Standard Horizontal End Suction Centrifugal Pumps 6500 Series end suction centrifugal pumps are based on the proven technology of Gorman Rupp s Prime Aire and Prime Aire Plus priming assisted pump models The 6500 Series was designed to extend Gorman Rupp s end suction centrifugal pump offering and to better serve applications where a suction lift is not required A double volute mitigates shaft breakage and extends the life of the mechanical seals wear rings and bearings all while maintaining hydraulic efficiency while a side access port allows for easy access to pump interior for inspection and clean out while the pusher bolt capability assists in the removal of the suction flange Flygt Dri Prime Pumps The Benchmark For Reliability When there s fluid to move mdash and downtime is not an option mdash you want pumps you can trust Whether it s a question of water wastewater or industrial fluids Flygt has earned a worldwide reputation for reliability Flygt 4320 Mixers Flygt the industry leader in municipal wastewater mixing is proud to raise the standard in high efficiency low speed submersible mixers Flygt 4320 s revolutionary design couples a high efficiency mixer and state of the art motor efficiency with an integrated variable frequency drive VFD The result is a submersible mixer that delivers superior mixing with adjustability and simplicity for unsurpassed energy savings Flygt Seals The reliability of a submersible product will never be better than the reliability of its sealing system Unlike dry installed equipment any fluid leaking through the seals will accumulate in the pump or mixer and cannot be drained during operation To achieve long service intervals and high reliability exceptional demands are made on the sealing system for submersibles Flygt ENM 10 Liquid Level Regulators

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  • Sewers and Sewer Line Maintenance
    System JOS Since then the Sanitation Districts have completed many challenging projects providing environmentally sound cost effective wastewater and solid waste management services to over five million people in Los Angeles County How To Remove FOG Deposits And Prevent Sewer Overflow Fats oils and grease FOG deposits present a problem for the wastewater industry as they create sewer lines blockages that lead to overflow Digester systems can successfully remove these deposits with the latest environmentally friendly technology by breaking them down into microparticulates This paper offers a technical review of the solutions available for applications such as commercial and residential lift stations grease traps and wet wells The End Is Near For FOG Deposits DO2E has designed and patented the Little John Digester for complete removal of FOG deposits of FOG deposits and H 2 S waste water More Sewers Sewer Line Maintenance White Papers Case Studies SEWERS AND SEWER LINE MAINTENANCE PRODUCTS Hydro Guard HG 8 Automatic Flushing System Designed to increase chlorine residual consistency in potable water systems Mueller has added the HG 8 model to the expanding line of Hydro Guard Automatic Flushing Systems Hydro Guard HG 8 is installed below the frost line with all components easily accessible from the ground surface in the Mueller Thermal Coil Box Dechlorinated discharge water is directed to the storm water drainage system or local retention pond In addition the product is designed to accept a 1 inch meter Mighty Mike Maintenance Tablets Maintain your drain with Mighty Mike specialty tablets and cleaners SewerGard 210 For Ultra Corrosive Industrial Wastewater Environments Sauereisen SewerGard Industrial No 210 is a novolac epoxy that is specifically formulated for industrial wastewater environments where plants and refineries treat contaminated water before it is sent to a municipal wastewater treatment plant More Sewers and Sewer Line Maintenance Products SEWERS AND SEWER LINE MAINTENANCE PODCASTS Wet Weather Challenges And Solutions Susan Moisio conveyance and storage leader with CH2M sheds light on the conditions and obstacles facing municipalities as they struggle with stormwater management The Case For Sewer Monitoring In this age of data acquisition there is no corner on Earth that can t be measured In the water industry that means plunging the deepest depths of our sewer systems Combating I I With Sensor Technology Hampton Roads Sanitation District is using flow monitoring to help get inflow and infiltration I I out of the sewers Learn why this method will save the municipality millions versus alternative approaches Making The Most Of Our Pipelines As pipelines from bygone eras have started to fail and we have entered what many consider an asset management crisis many believe it s a matter of aging infrastructure Travis Wagner vice president of asset management with Pure Technologies engineering division takes a different view More Sewers and Sewer Line Maintenance Podcasts Newsletter Signup SIGN ME UP SEWERS AND SEWER LINE MAINTENANCE VIDEOS What Is A Combined Sewer Overflow How does a combined sewer work A representative from the Northeast Ohio Regional Sewer District

    Original URL path: http://www.wateronline.com/solution/sewers-sewer-line-maintenance (2016-02-14)
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