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.
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 CNSolution 9310 analyzer is used in precious metal processing to measure and control cyanide used in the hydrometallurgical leaching of gold and silver from the ore.
When we humans look at objects we describe them in terms of color. We say that an apple is red or a leaf is green. To us color is an attribute just as surely as the mass or dimensions of an object. But the fact is that color is a pure human construct. Take away the human and it does not exist.
ICP’s Ochoa Mine Project is projected to produce approximately 714,000 tons per year of SOP (K2SO4) from polyhalite ore for greater than fifty years as concluded in a feasibility study.
Proper measurement of pH is a key factor of corrosion risk surveillance in water-steam cycles.
OI Analytical’s CNSolution™ 9310 On-line Cyanide Analyzer is designed to measure available cyanide in precious metal leaching solutions by USEPA Method OIAA-1677 and ASTM D 6888-09. Unlike traditional techniques, the gas-diffusion amperometry technique used in these methods is free of interferences from copper and metallic sulfides. The 9310 On-line Cyanide Analyzer displays results in real-time and has a single piece zero-maintenance reference electrode, which simplifies instrument maintenance.
Easy to install, each Series WP70CV3 wall panel feeder is factory tested and needs no field adjustment prior to start-up. Eleven different flowmeter capacities ranging from 5 to 3000 PPD (100 g/h to 60 kg/h) provide versatility in meeting gas flow requirements.
The MicroDPD® analyzer uses proven DPD colorimetric technology for monitoring chlorine in both municipal and industrial applications. The instrument can measure free or total chlorine in drinking water, wastewater and seawater.
The Millennium II Basic (M2B) universal transmitter is a robust and reliable safety solution delivering highly accurate monitoring of toxic and combustible gases. Utilizing our state of-the-art sensor technology, it provides a flexible detection platform that includes all the advanced features users in the field demand with complete ease-of-use and operation.
The Atomx Automated Sample Prep System combines an Autosampler and Purge and Trap into a single instrument for the analysis of VOCs in soils and waters. This is the first of its kind and only system that employs a unique methanol extraction automation feature for high level soils in accordance with USEPA Method 5035.
The Aqua TROLL 400 Multiparameter Instrument is ideal for long-term groundwater and surface-water applications. The instrument leverages our patented, EPA-approved RDO® Technology. The compact instrument houses six water quality sensors and measures 12 parameters.
The Water Champ® FX Chemical Induction System from Evoqua has set the benchmark in chemical feed and disinfection with its innovative design and versatile applications for chlorination, dechlorination, chloramines, pH adjustment and rapid mix. The system provides superior mixing intensity maximizing chemical reaction while using less energy. Independent third party testing has proven that a Water Champ system can provide up to 40% better power to flow-rate ratios compared to other induction mixers or conventional methods.
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.
It makes sense that water regulations are written in line with the available means to detect contaminants. The same logic would suggest that as newer, more accurate diagnostic technologies become available, the list of MCLs and the depth of water regulations will continue to evolve.
There’s a lot of data floating around the water industry these days. SCADA, flow statistics, online monitoring, DO measurements, air flows, LIMS system data in the Lab, and CMMS data from maintenance software to name but a few.
Beyond measurement, Hach is on a mission to provide its customers with the information to make better decisions. Sam Utley, Vertical Market Manager for Wastewater with Hach, recently sat down with Water Online Radio to discuss the movement towards greater clarity in data collection and evaluation.
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.
