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.
A municipal water quality manager reports replacement of sodium hypochlorite (hypo) vacuum feeder units with a more advanced type at one water treatment plant (WTP) has helped allow for continued reliability for chlorination.
Entrained gas can disturb the sensitivity of mass flow measurement of liquids, decreasing accuracy or even stopping measurement completely. New Coriolis mass flowmeter technology has come on the market that ensures both stable and uninterrupted measurements with high gas content.
If you’re in the business of managing a water system – whether drinking water, wastewater or water used for industrial purposes – a luminometer can make your job easier.
The residents and industries of Providenciales Island are completely dependent on fresh water produced by a single desalination plant. In 2007, ITT Flowtronex was hired to replace the plant’s overworked pumping system and add a booster pumping station to the distribution system. One of the challenges they faced in designing controls for the system was how to maintain the public water supply while the island’s undersized ground water storage tanks were removed and replaced with a large single tank in the same location, a three to four month process. By Richard Embry and Christopher Little
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.
Mid-to-large size facilities and campuses inevitably have hundreds of flow instruments to monitor, maintain, and repair. For a reliability engineer, ensuring that all instrumentation meets ISO 9000 or similar standards is a time-consuming responsibility. By Matthew J. Olin, President & CEO, Sierra Instruments, Inc.
In June of 2009, the Town of Selma, North Carolina commissioned a supervisory control and data acquisition (SCADA) system to monitor and control their lift stations, tanks, wells and water treatment plant. By John Grey, Devin Carroll and Christopher Little
Opened a few months per year, seasonal establishments typically experience important fluctuations in the number of visitors. Energy consumption and operating expenses must continually be analysed and optimized. The implementation of efficient energy management practices and the integration of innovative wastewater treatment solutions that can improve their cost-efficiency ratio have become major sources of savings for this whole industry.
Integrating controls from an equipment supplier successfully within a Plant SCADA or DCS system requires communication on multiple levels. These levels include process of design, mechanical fit up and installation, as well as the coordination to get the equipment to work in concert with the plant’s other control systems. Simply looking after mechanical/electrical details are not enough. To be successful, the plant’s System Integrator and the equipment supplier’s PLC programmer must work with each other throughout the entire project’s development. By Todd Nydam, JWC Environmental LLC & Graham Nasby, Eramosa Engineering Inc.
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.
Fox Thermal Flow Meters use a constant temperature differential (constant Δ T) technology to measure mass flow rate of air and gases.
Dosing of the precipitant was adjusted manually based on the laboratory measurement value of the daily composite sample and so was unable to respond to possible peaks. Although being compliant with the effluent limits, the values observed fluctuate between 0.2 and 0.8 mg/L.
Hach LDO® technology improves the efficiency of pharmaceutical plant’s wastewater treatment process, helping to protect the environment and the community.
Levels of phosphorus, a chemical element that promotes organic growth, must be controlled in wastewater coming from beverage, food and dairy processing plants. Failure to control phosphorus accurately has a negative impact on water quality and can lead to large fines.
Compliance and consistent high quality are two of the key goals within the beverage industry. Hach® provides support for these goals through comprehensive analyses of water and beer.
There are several basic methods for reducing harmonic voltage and current distortion from nonlinear distribution loads such as adjustable frequency drives (AFDs). Following is a description of each method, along with each method’s advantages and disadvantages.
Organic carbon compounds vary greatly. In fact, one of the first lessons in most introductory Organic Chemistry courses explains that the number of possible carbon compounds is virtually infinite due to carbon’s ability to form long, chain-like molecules. While chromatographic methods like gas chromatography (GC) or high-performance liquid chromatography (HPLC) are able to make quantitative determinations for specific compounds, the user must first know which specific compounds to look for.
In the early days of variable frequency drive (VFD) technology, the typical application was in process control for manufacturing synthetic fiber, steel bars, and aluminum foil.
The C445 motor management relay offers the most configurable protection options in the industry, with features specifically designed to protect critical pumps from costly damages due to dead-head and other underloaded or starved pump conditions.
Energy costs continue to increase. At the same time, there is increased pressure to reduce utility bills without sacrificing operations or comfort.
A simple valve package that saves both water and money, the Model 106 / 206 PGM-2PR-630-SM is an extension of the 2PR-630 pressure management valve with safety back-up.
Aquavista™ offers a wide and flexible range of digital solutions that respond to your challenges. From operators to management, Aquavista™ provides your plant personnel with a tool to efficiently manage plants and water treatment equipment.
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. Designed with extensive customer input, the easy and innovative system includes an intuitive touchscreen display, menu-driven software to easily guide users through set-up and operation, and a USB interface for software updates and data log downloads.
The GDT™ Degas Separator is a patented centrifugal vortex unit that separates entrained and stripped gases from liquid (water) based on the density difference between the gas and liquid. Its unique compact design quickly and effectively separates unwanted entrained gases — such as ozone, chlorine, or methane — and requires far less space than traditional gas separators. It enables gas separation with pressure differentials of 5% or lower and at varible flows. The self-cleaning design significantly reduces maintenance and downtime, and it includes no moving parts that can wear out, break down, or require service.
The Swan AMI DIST series offers three options for measuring chlorine, pH, conductivity and Turbidity on one easy to install, easy to maintain panel.
PowerXL enclosed drives is a Next Generation enclosed drives platform that packages Eaton’s PowerXL DG1 drive into a new and innovative solution. A common assembly design used across 9 million pre-engineered standard configurations delivers an easy-to-use product with industry best lead times. Add in the flexibility of custom engineered configurations and the reliability of a UL 508C design and an ISO 9001 manufacturing process, you get the most versatile, fast and reliable product on the market.
Moving water and controlling water systems is no easy task. There are many variables involved with fluid dynamics, the addition of environmental, harmonics and energy cost concerns make system control even more difficult. Eaton understands these problems and provides enclosed drives solutions for water/wastewater. From NEMA 4X enclosures to our Active Energy Control algorithm and five-year warranty, Eaton provides a complete solution for water/wastewater applications.
Power Xpert C445 is the most intelligent option in the C400 motor protection family. C445 offers industry leading protection, diagnostics and energy usage analytics. Multiple network options and easy integration tools make leveraging C445 intelligence easy.
Kansas City’s Smart Sewer program represents the nation’s first federal consent decree to include green infrastructure solutions in the reduction of wastewater overflows, as well as the city’s largest infrastructure investment to date. Projects that include the words “first” and “largest” do not come along without the strong leadership of a “Water Champion” such as Special Assistant City Manager Andy Shively, PE, who shares his experience and expertise in this Q&A.
Water utilities are tasked with ensuring a sustainable and safe supply in addition to achieving business and service excellence goals. These goals are typically based on criteria that measure operational performance, meeting bond covenants, and customer satisfaction.
Activated sludge has been a cornerstone of wastewater treatment since the early 1900s. Over the years, variations of the activated sludge treatment process have surfaced. These variants were efforts to improve treatment performance or reduce capital or operating costs. A new technology, known as Nereda®, uses aerobic granular sludge to meet all those criteria.
It was reported in Verizon’s 2016 Data Breach Digest that a hacktivist group associated with Syria hacked into an anonymous water utility’s control system and changed the levels of chemicals being used to treat tap water. An unnamed water district, dubbed the Kemuri Water Company (KWC), experienced unexplained patterns of valve and duct movements over at least a period of 60 days.
The journey to “smart” has proven more challenging for wastewater networks than for potable water, but real-world impact is imminent. Learn what potential awaits the industry at monitoring’s latest frontier.
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.
The Power Systems Experience Center (PSEC) is a safe, controlled environment where you can participate in training and observe testing and product demonstrations first hand.
In this video we explore the best way to protect your pump from the damaging effects of a dead head or other under loaded conditions like a starved or dry pump. Watch this video to learn how to prevent your pump from dead head with the C445.
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.
The FS230 simplifies and optimizes your day-to-day operation with an unparalleled data update rate, superior user-friendliness and a leading variety of options for customization, securing the highest measurement quality at the lowest cost. Watch the video demonstration for an explanation of the three simple steps of installation.
