Water & Wastewater Articles

  • Case study - City of Montreal upgrade of Atwater and Des Baillets water treatment plants

    Sidestream Venturi Injection—Basin Nozzle Manifold Contacting System. Montreal, Quebec, Canada The Problem: In 2001, a water quality audit revealed that two of the largest drinking water plants in the City of Montreal were out of compliance with Quebec’s latest water quality rules. In response to the audit, the city upgraded the 1,400 MLD Atwater and the ...

  • Real Time TOC Analysis in Steam and Condensate

    Executive Summary Steam in petro/chemical plants could be contaminated with hydrocarbons (TOC = Total Organic Carbons) from various sources. In any case this is a sign for defects in the process, whether it they occur in the heat exchanger, the blow down vessel, the condensate recovery or other parts of the system. Conventional solutions to monitor such contaminations use TOC- ...


    By JCT Analysentechnik GmbH

  • How To Handle Chemical Spills & Cleanups

    FAST-ACT is designed for liquid and vapor chemical releases, but the chemicals it attacks does not need to be limited to what we traditionally think of as a chemical spill. Toxic and noxious chemicals can come from a variety of sources such as waste water, decomposition, household chemicals, and animals. Since FAST-ACT can be applied to liquid spill or vapor release enabling Emergency Responders ...


    By Fast-ACT

  • Are young people leaving themselves at risk of flooding?

    According to recent figures from the Environmental Agency, young people in the UK may be leaving themselves at risk of flood damage. Around 75% of 18-24 year olds ...


    By AQUAREAD Limited

  • 8 Reasons You Won`t Pass Your EHS Certification Exam

    You prepared for months, reviewed practice exam questions by the thousands, and you hope you’re prepared enough to take your ASP, CSP, CIH, or CHMM exam. However, there may be some things you haven’t considered that will keep you from passing your certification exam. I’ve talked to many clients over the years and there are some common themes in regards to reasons why candidates ...


    By Bowen EHS, LLC

  • A practical guide for steering clear of pipe disaster

    Call it what you want, but a busted pipe spells nothing but T-R-O-U-B-L-E. Now, the good news: There are several measures you can take now to avoid future pipe catastrophes, locate and eliminate potential break risks and prevent expensive emergency repairs. This easy-to-follow guide offers helpful tips for engineers and water professionals looking to reduce the risk of pipe breaks, save valuable ...


    By Singer Valve Inc.

  • Managing metallic pipe: a white paper on the significant developments in metallic pipe inspection approaches, services and technologies

    Traditionally, many utilities have been managing their aging metallic pipelines using a replacement approach, which prioritizes a pipe based on its age and failure history. While in some cases, pipe replacement is both financially defensible and necessary, age and failure history alone do not provide enough data to determine if replacement of a pipeline is necessary. In fact, the U.S. ...


    By Pure Technologies

  • 10 things you need to know about the circular economy

    10 things you need to know about the circular economy A working circular economy could be a practical solution to the planet’s emerging resource problems. Here’s 10 facts you should know. 1. Why do we need one? The circular economy is touted as a practical solution to the planet’s emerging resource crunch. Reserves of key resources such ...


    By GPT Waste Management Ltd

  • Why Your Project Should Include Articulated Concrete Blocks

    During any construction project, large or small, planning for potential construction erosion is essential. Failing to take into consideration the possibility of erosion when planning a construction site will not only reduce the quality of the soil at the site, but it may also damage surrounding properties, harm the local environment and result in hefty fines and liability costs. To avoid the ...

  • The Basics of Slope Stability Analysis for Geosynthetics

    Slope stability analysis is vital to preventing slope failures in a variety of engineering applications including landfill design, roads, dams and embankments, to name a few. Proper analysis anticipates both natural and manmade slopes and failure of foundations and retaining walls. This blog covers the necessity of slope stability analysis, how to conduct the analysis and the role of ...


    By Agru America, Inc.

  • Raw material cycle: from chip to briquette to product - Case Study

    Thanks to their briquetting system from RUF Frischhut can redeploy production scrap and melt it again Ludwig Frischhut GmbH and Co. KG have closed the circle on their raw material cycle by utilising a briquetting press from RUF: cast chips produced during the machining of parts for water supply and sewage disposal are pressed to solid briquettes and then melted in the in-house foundry and ...

  • How data and analytics are keeping Philly’s water safe

    CH2M assisted Philadelphia to implement a Surveillance and Response System (SRS) demonstration project under the U.S. Environmental Protection Agency’s (EPA’s) Water Security Initiative. CH2M Global Director Smart Cities and Senior Technology Fellow Dr. Avinash S. Patwardhan and Ken Thompson, CH2M Deputy Director Intelligent Water Solutions and Senior ...


    By CH2M Hill Companies, Ltd.

  • Case Study: JWC Grinder saves Las Vegas apartment complex $20,000 in 90 days!

    Problem: Frequent pump malfunctions and clogs causing high maintenance costs Solution: 3-HYDRO Open Channel Sewage Grinder Approaching something the same way repeatedly rarely yields ...


  • White Paper: Energy Superhighway Will Be Crucial to Successful Delivery and Management of Energy Services

    Rrecent white paper from Navigant Research provides a far-reaching view of the connectivity needs of electric utilities, exploring approaches and technologies, with case studies of projects designed to develop an Energy Superhighway. Over the last decade, with the advent of smart grid technology, ...


    By Smart Grid Observer

  • Algae Control in Lakes and Reservoirs

    There are plenty of harmful algal bloom related cases worldwide but what is evident is that their number elevates with each year. Excessive cyanobacteria (blue-green algae) and green algae growth in a water reservoir can have negative consequences for the water quality. The water turns green, sand filters can clog, and some algae can produce geosmins and MIB, giving the water an ...


    By LG Sonic

  • Thermophilic digestion revisited

    On the 28th of October Colsen presented their practical experience in the field of anaerobic sludge digestion at the Ghent symposium Valorization of organic resources from wastewater. At the symposium various speakers presented its view or experience on the topic of valorization of organic resources from wastewater. Numerous examples are being developed by companies and universities ...


    By Colsen International b.v.

  • Moulton niguel water district gets high marks for use of high resolution inspection technology on steel main

    When a critical pipeline in a populated residential area has a high consequence of failure, it makes sense to assess its condition with the highest resolution technology available. That’s the proactive route taken by Moulton Niguel Water District (MNWD), which provides water, recycled water and wastewater service to approximately 170,000 people within its service ...


    By Pure Technologies

  • Arctic Polar Research - A Global Responsibility

    Due to climate change and geopolitical trends, the Polar Regions (particularly the Arctic) are increasingly becoming the focus of scientific, political, and economic interests. Much of the global climate is driven by forces that originate in the Arctic. The Arctic sea ice is receding faster than climate models have predicted, and the movement of freshwater into and around the Arctic plays an ...

  • On the right track

    High-speed train manufacturer, CAF, rely on world-class beamforming technology to reduce the noise generated by their trains – helping to make high-speed trains a more viable option for travellers and operators alike. Because of its relatively low levels of CO2 emissions, train travel is considered one of the ...

  • Tech Tip: Deploying Sea-Bird CTD in Ice

    Large numbers of Sea-Bird conductivity instruments have been used in Arctic and Antarctic programs. Special accommodation to keep temperature, conductivity, oxygen, and optical sensors at or above 0° C is advised. Often, the CTD is brought inside protective doors between casts to achieve this. Conductivity Cell When freezing is possible, we ...

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