How To Clean, Inspect, And Calibrate pH Sensors
Once a pH sensor is installed in the process and operating, how do you determine when it is time to take the sensor out of the process and do a cleaning, or a calibration? Does one perform both a cleaning and a calibration or just a cleaning, or just a calibration? By Fred Kohlmann - Analytical Product Business Manager
Town Of Hillsborough Relies On Hach For Free-Ammonia Testing And Nitrification Control
When Bay-area water wholesaler San Francisco Regional Water System (SFRWS) changed its residual drinking water disinfection process from chlorine to chloramine, the town of Hillsborough’s Water Quality staff faced the challenge of updating its water testing procedures to prevent nitrification and continue to meet state-mandated drinking water quality standards.
Water Quality Is Key To The Success Of Cardiff Bay Restoration
Water quality has been a central theme in a redevelopment project that began with the creation of the Cardiff Bay Development Corporation in 1987.
ORP Based Measurement Of Oxidizing Disinfectants In Aqueous Solutions
Oxidizing antimicrobials, such as chlorine, are common disinfectants used to treat water. Test strips, DPD kits, and colorimeters are currently the most popular methods for determining the relative disinfecting power of oxidizing antimicrobial agents in these applications. By Myron L Company
Source Water Monitoring Case Studies And Solutions
Protecting the sources of drinking water is a key concern among water professionals. We rely on water for our most basic needs. As we have observed since the beginning of the industrial revolution, there are many threats to the quality of this water.
A Rosemount Chlorine Analyzer Proves Just The Job For Seawater Duty At Dow's Terneuzen Site
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 The existing chlorine measurement system had become outdated, so after stringent tests Dow decided to replace it with a Rosemount Model TCL analyzer from Emerson Process Management.
White Paper: Instrumentation For Organics Removal Processes
Organic matter in water is the source of many water quality challenges. By Andrew Glover, Real Tech Inc.
Case Study: Optimized Quality Control In Mineral Water Plants
Due to microbiological activity in the
process, or to a lesser extent due to the
reduction in nitrate levels in the raw water,
nitrogen compounds may give rise to
increased nitrite concentrations. By Endress + Hauser, Inc.
Measuring Tube Construction Affects The Long-Term Stability Of Magnetic Flow Meters
Electromagnetic flowmeters, also known as mag meters, are popular and proven devices for flow measurement of electrically conductive process fluids and for volumetric filling machine applications. Of prime importance to a mag meter’s accuracy and long term performance is the condition of the metering section of the flow sensor. By Dipl.-Ing. F. Hofmann and Dipl.-Ing. B. Schumacher, KROHNE Messtechnik GmbH Co KG Duisburg, Germany
Water Supplier Ensures DBP Compliance With UV254 Organic Monitoring
Mohawk Valley Water Authority (MVWA) is a progressive supplier of potable water. With source water from the Adirondack Mountains, MVWA works to improve on nature and provide superior water quality, always striving to meet or exceed drinking water standards. Like many other surface water sources, MVWA’s water supply is rich with natural organic matter (NOM). Unfortunately, growing research has demonstrated that NOM in water when combined with chlorine leads to the formation of potentially harmful disinfection by-products. By Jodi Glover, Real Tech Inc.