Drinking Water Measurement White Papers and Case Studies

  1. Utilizing A Phosphate Analyzer To Monitor And Control Chemical Feed Reduces Operating Costs And Improves Reliability
    2/6/2014

    The Environmental Protection Agency (EPA) administers the Safe Drinking Water Act (SDWA), which provides for the enhancement of the safety of public drinking water supplies through the establishment and enforcement of nationwide drinking water regulations. Congress gave the primary responsibility for establishing regulations to the U. S. EPA.   Until 1990, the EPA administered a certification process for chemicals, including phosphates, to be used for potable water treatment. By Randy C. Turner, Technical Director, Swan Analytical USA

  2. A Rosemount Chlorine Analyzer Proves Just The Job For Seawater Duty At Dow's Terneuzen Site
    4/19/2010

    The Dow Benelux site in Terneuzen, the Netherlands, uses seawater for process cooling. Environmental regulations require careful control of the concentration of chlorine added to control microbial fouling. The existing chlorine measurement system had become outdated, so after stringent tests Dow decided to replace it with a Rosemount Model TCL analyzer from Emerson Process Management.

  3. Carbon Dioxide For pH Control Of Landfill Leachate
    6/16/2016

    A landfill operator’s leachate treatment plant in Missouri required pH reduction following lime-softening and prior to the biological wastewater treatment process. Carbon dioxide (CO2) was chosen as a substitute for sulfuric acid due to improved process control and a reduced tendency to form scale.

  4. Shanghai Investigation Sets BIM Standard On Ningbo Yongxin’s Urban Flood Control Project
    11/1/2016

    In response to the devastation from a 2013 typhoon that caused the Yongxin and Yongjiang rivers in Ningbo, China to overflow, Ningbo Raw Water Group Ltd. commissioned the detailed design and construction of a CNY 178 million emergency sluice pump. The pump would provide flood control measures and mitigate future flood losses to improve urban infrastructure services within the Zhejiang province. To avoid the risk of additional flooding from another typhoon, the Raw Water Group required the urban flood control project to be delivered in a demanding eight-month schedule—a process that would ordinarily take 24 months to complete.

  5. The Next Generation In Water Filtration For The Oil And Gas Industry
    4/17/2013

    There is a need in many segments of the oil and gas production industry for an improvement in water filtration over traditional methods. By Michael Dejak, P.Eng. 

  6. Dollars And Sense: The Financial Case For Automation
    5/7/2012

    Whether it is dining out less often or putting off that new car purchase just a bit longer, it seems that doing more with less is something many of us have become accustomed to over the last few years. Consumers are not the only ones feeling the pinch. By Doug Johnson, Emerson Process Management Power & Water Solutions

  7. A More Efficient Approach To EPA Stage 2 DBP Compliance
    4/20/2018

    Everyone wants pathogen-free drinking water, and adding chlorine is a great way to get it. Unfortunately, the dirtier a water treatment plant (WTP)’s raw water inflow — in terms of natural organic matter (NOM) or microbial organisms — the more disinfection byproducts (DBPs) the chlorination process will generate in the form of trihalomethanes (THMs) and haloacetic acids (HAAs). Those DBPs increase the risk of non-compliance with the U.S. EPA’s Disinfectants and Disinfection Byproducts Rules. Choosing the right instrumentation to measure NOM through spectral absorption coefficients (SACs) can have a big impact on treatment strategies — in terms of both costs and compliance performance.

  8. How To Utilize pH Neutralization Systems And Adhere To Discharge Regulations
    9/17/2018

    For any drinking water or wastewater treatment operation, pH neutralization is never far from top-of-mind. The regulatory standards for pH to which effluent must adhere, also known as “pH neutralization,” are central to ensuring that treatment is performed accurately and that the water or wastewater leaving a plant is safe.

  9. Orchestrating Corrosion Control With Phosphate Analyzers
    4/18/2018

    As with so many other drinking water treatment processes, corrosion control demands a delicate balance among multiple factors. From the water-purifying chlorine that increases corrosion risk, to alternative strategies that reduce corrosion — using either elevated pH or phosphates — keeping corrosion under control requires sound strategy and reliable execution. Here are several approaches to addressing those conditions, along with options for better, more effective corrosion control.

  10. Sabesp Improves The Anhangabaú Sewer Collection System Below Projected Cost
    12/1/2015

    Sabesp provides water to and collects sewage from over half of the cities in the state of São Paulo, Brazil, including São Paulo the state capital and the country’s largest city. The utility is currently in the process of upgrading the Anhangabaú sewer system, which consists of 122.88 kilometers of sewer conduit network, with 1,749 manholes and 14,832 household connections serving an estimated 400,000 inhabitants.