Measuring the level of tanks used to hold fluids for custody transfer can be expensive. This is not due to the cost of the measurement instrumentation, but to what inaccurate measurements can cost the company. Picking the right instrumentation for applications is important. Which radar level technology should you choose for tank gauging in custody transfer applications? Frequency Modulated Continuous Waveform (FMCW) or pulsed Time-of-Flight (ToF or PToF).
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.
Within a wastewater treatment plant (WWTP), operators typically face an extremely wide range of different variabilities.
Storm water runoff from a 37-acre coal storage yard utilized as part of daily operations at an industrial site in Southwestern Pennsylvania posed a problem when the Pennsylvania Department of Environmental Protection (DEP) updated the facility’s NPDES permit.
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.
The AutoMate-Q40 is a revolutionary system specifically designed and optimized to automate the QuEChERS sample preparation workflow.
Monitor for continuous measurement of pH or redox (ORP) in potable water and effluents with combined or separated sensors with reference electrodes for various sampling conditions.
The TrueSND™ biological treatment process from Evoqua is a well-established true simultaneous nitrification denitrification technology. The process achieves nutrient and BOD treatment limits using less power in a smaller footprint when compared to more conventional alternatives. It can be applied in both new plants and retrofits, and it can easily resolve high peak and storm flow challenges. Evoqua has over 800 installations and offers three systems that fit specific plant needs and capacities: Orbal® multichannel oxidation ditch systems, VLR® systems and VertiCel® wastewater treatment systems. Evoqua also offers SmartBNR™ process controls, which optimize energy efficiency and plant operation. TrueSND can be applied for nutrient removal (TN and TP limits); BOD removal only (30/30 effluent); new construction; plant retrofits and upgrades; and high peak and storm flows. Evoqua can help create a solution that saves energy and space while meeting required effluent standards.
Weighing only 28 pounds (12.7 kg), the AS950 Portable Sampler is designed for accuracy and convenience. Quickly switch between composite and discrete sampling in the field. Configurable for single- or multiple-bottle applications, it is specifically designed for use in 18-inch manholes.
Combining LuminUltra’s 2nd Generation ATP monitoring solutions with Microbe Detectives’ advanced DNA analysis and classification service allows you to identify and analyze the entire microbiome. This provides critical answers as to why control was lost AND how to fix and prevent future problems. For drinking water and wastewater utility managers, that means mitigating risk while improving capital and operating efficiencies.
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.
