A case of legionellosis — an illness acquired from Legionella bacteria, which can grow in cooling water and potable water systems — was diagnosed at a medical retirement home.
In this white paper, learn how to decrease alarms due to redundant level devices not matching, especially in applications with high pressure and/or high temperature. The importance of Gas Phase Compensation (GPC) and how it affects level readings of guided wave radar (GWR) devices is critical. The presence of polar gas also can have an effect on the accuracy of any GWR that does not have GPC when installed in applications where high temperature or pressure is present. This paper will discuss these issues and address how to overcome them.
Over the course of a 1.5-month field experiment at a Canadian starch mill biological wastewater treatment process, LuminUltra Technologies demonstrated the benefits of using 2nd Generation ATP® monitoring technology. ATP (Adenosine Triphosphate) monitoring technology is an accurate biomass measurement that can rapidly monitor all types of biological wastewater treatment processes, aerobic and anaerobic alike.
As a bulk emergency chlorine vapor scrubber system approached the end of its anticipated 20-year useful life, the city engaged Integrity Municipal Systems, LLC (IMS) inspected the equipment and proposed a system refurbishment plan that would ensure proper system performance and safe storage of the 30,000 gallons of corrosive caustic soda contained within it.
Vallviks Bruk AB, located about 200 km (125 miles) north of Stockholm, produces softwood kraft pulp and chemical pulp for export. Some years ago, increased environmental requirements led to a major investment in a biological treatment plant. Read the full case study to learn why ABB instrumentation was an obvious choice when the Swedish pulp producer Vallviks Bruk AB built a new plant for biological water treatment.
The Jimo, China, municipal wastewater plant was originally designed to treat a combination of municipal and textile wastewater (120,000 m3/d) with Class IB effluent limits for BOD, COD, ESS, TN, NH3-N and TP.
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.
A WWTP sought solutions to improve process control, as high centrate solids caused plant inefficiencies such as high wasting rates, inefficient capacity and loading, and stress on centrifuges. Read the full case study to learn how the RTC-SD solution controlled polymer dosing in real time, allowing the WWTP to improve solids capture and increase throughput.
Rapid City is the second-largest city in South Dakota, serving over 72,000 residents. Their Water Reclamation Department treats nearly 3.5 billion gallons of wastewater annually.
Hach’s off‐the‐shelf Real-Time Control System for Sludge Thickening (RTC‐ST) adjusts the sludge thickening process in real time. Thanks to the RTC-ST, a wastewater treatment plant improved thickened sludge consistency and gas production while reducing money spent on excessive polymer dosing and maintenance.
A dissolved oxygen sensor ought to be simple to understand. Whether it is membrane or optically based, it gives a signal that is proportional to the concentration of oxygen concentration in water.
Continuous analyzers are an integral part of the process to maintain quality, ensure compliance, and protect public health. Therefore it is imperative to ensure the analyzers are functioning properly and provide accurate and reliable data. This requires validation of the data provided by the analyzer on a routine basis. In addition some continuous analyzers incorporate internal data validation capabilities to inform the end user the reliability of the data provided by the analyzer. This paper discusses integrated data validation and how they may be integrated into SCADA systems.
To protect the environment, wastewater treatment facilities across the country are required to deliver dissolved oxygen (DO) into the treated effluent, with most DO permits ranging from 2 to 10 mg/L.
A few months ago I received a call from an angry user who was using one of our differential probes and a controller. Embedded in the probe is a thermistor that measures temperature.
Teledyne Tekmar has been the market leader in environmental and drinking water testing for decades, having invented many of the instrumental technologies used in today’s lab. From TOC drinking water analysis to EPA compendium methods for air, soil and water, Tekmar has the right instrument for your application.
The AQUATek 100 is a purge and trap autosampler that automates the sample preparation steps for the analysis of liquid samples utilizing a fixed volume sample loop filled using a pressurization gas. Two independent volume programmable internal standards are then added to the sample and the entire aliquot is transferred to the Purge and Trap for compound concentration and subsequent separation and detection using a GC/GC-MS quantification system.
Continuing the tradition of ground breaking products that add exciting new capabilities for smart, remote monitoring in water and wastewater networks.
With an easily scalable solution the 182, 182 XT, and 182 XT-4 allow for the connection of 1-4 sensors depending on which terminal you choose. Add sensors at any time and at any location or change them out with ease.
Static headspace is one of the most popular techniques due to its versatility for analyzing volatile organic compounds (VOCs) in a complex variety of matrices. This is due to the elimination of tedious sample preparation steps and prevents contamination problems that are common to other sample introduction techniques. Teledyne Tekmar draws on our experience as a leader in low-level VOC analysis with the introduction of this companion autosampler to the Headspace product line.
The Swan AMI DIST series offers three options for measuring chlorine, pH, conductivity and Turbidity on one easy to install, easy to maintain panel.
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.
Cloud-based monitoring and reporting was all the rage at WEFTEC 2017. Water Talk sat down with Tom Perry, National Product Manager with Veolia to discuss Aquavista, one of the more established technologies for capturing critical data, storing it in the cloud and allowing it to be accessed real time, 24/7 from any smart, web-enabled device.
MilliporeSigma is well known by many, but perhaps not within the water industry. That is changing, thanks to the company's work on total nitrogen (TN) testing, having recently developed a new method. Learn how and why MilliporeSigma branched out from life sciences and specialty chemicals into water, and what it means going forward.
With the ability to store mass amounts of data, real-time monitoring and the timely analysis of that data is spurring significant change in the water industry. As Rick Bacon, CEO of Aqua Metrology Systems, explains in this Water Talk interview, high frequency data is not only aiding in the battle to identify contamination but also in summarizing performance once a solution has been installed to fix it.
The heavy-duty, industrial strength of Aquametrix probes have made them ideal for wastewater applications. But as Mark Spencer, President of Water Analytics and the manufacturer for Aquametrix, points out in this Water Online Radio interview, they are also being accepted by a growing industrial audience.
From the experts in chlorine management comes a multi-parameter water analysis system offering both chlorine measurement and control in one versatile instrument. Tailor the modular MicroChem®3 to your individual application with up to three measurement parameters. Watch the video to learn more.
A key component of the water supply plan for the City of Wichita, Kansas, was recharging the large aquifer that lies under the region with water from the Little Arkansas River. The river basin contains substantial farming operations which, during rain events, spike the river water with the commonly used herbicide Atrazine. Atrazine concentrations in the river frequently rose forcing the city to shutdown the bank filtration system. Advanced oxidation process (AOP) was selected to remove the herbicide. The AOP reactor’s design limited the amount of hydraulic backpressure it could tolerate. Consequently, Mazzei was challenged by the project’s design team to remove the entrained gas bubbles that remained from the prior oxidation treatment at a “not to exceed” hydrostatic backpressure of 19 feet.
Hach’s new Mobile Sensor Management solution is an example of the instrumentation company’s mission to provide greater clarity to its customers. As Ray Ruth, Global Product Manager at Hach, explains to Bill King in this exclusive Water Online video, the software running on your mobile device-of-choice makes sense of the Big Data coming from your sensors to assist operators and lab technicians in prioritizing maintenance, analyzing samples both in the field and the lab and can even walk you through maintenance tasks.
