For many years, the Miami-Dade Stormwater Utility has been using Bristol Babcock controllers and proprietary HMI software to monitor and control a dozen remote sites across the county. By Chris Little
WASTEWATER MANAGEMENT WHITE PAPERS AND CASE STUDIES
City Solves Reliability And Maintenance Problems For WTP Hypo Feeds
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.
Two Phase Flow Considerations For Coriolis Meters
Two phase flow is notoriously problematic for most flow technologies. Read how ABB is tackling the 2-phase flow problem through an entire meter-design approach, which entails a state of the art electronics platform and innovative sensor technology. By Ron DiGiacomo
Why A Little Knowledge About Sensors Can Be A Dangerous Thing
Every day our technical support people answer questions on the selection of sensors for pH, ORP, conductivity, dissolved oxygen and turbidity. No issue generates more confusion than cell constants for conductivity sensors. The vast majority of returns we process are for conductivity sensors that were ordered with the wrong cell constant. It turns out that cell constants are something that we all read but that most of us don’t really understand. Pick the wrong cell constant for a probe and your analyzer will happily give you numbers to 3 significant digits. The only problem is those numbers are wrong. By Mark Spencer, President, Water Analytics
VTScada At Toyota Motor Manufacturing, KY
One of the world’s largest manufacturing plants improves efficiency by adopting a unified HMI to monitor water/wastewater, compressed air & liquids, and lighting. By Christopher Little
Replacement Vacuum Feeders For Hypo Treatment End Heavy Feeder Maintenance Burden At WWTP
The instrumentation supervisor for the City of Baltimore, MD’s 150-MGD Back River wastewater treatment plant (WWTP) reports that replacement of problematic vacuum feeders with more advanced vacuum feed units has ended heavy maintenance burdens associated with sodium hypochlorite (hypo) treatment of plant effluent. By Cliff Lebowitz
Modernize Your Mobile Operation
The Metropolitan Sewer District of Greater Cincinnati’s Wastewater Collection Division manages 3,000 miles of main sewer line and services some 200,000 individual customer sewer laterals and accounts that cover nearly 1 million residents and businesses. When things go wrong with those pipes, the division hears about it from customers loud and clear.
Three Steps For Reducing Total Cost Of Ownership (TCO) In Pumping Systems
Energy costs have become an increasing contributor to pumping systems Total Cost of Ownership (TCO). In fact, energy cost represents 40% of the TCO of a typical pump. It is possible to reduce the electrical consumption by at least 30% utilizing Variable Speed Drives while decreasing maintenance costs associated with the mechanical driven system. This paper explains how to reduce TCO with a limited investment focused on three key areas: energy efficiency management, asset management, and energy cost management.
Constructing A Winding Box Culvert Channel In A Steep, Rocky Canyon
Special precast box culverts were used for one of the most significant segments of the $25.8 million emergency water restoration project, designated by the NRCS, known as the Cache Water Restoration Project (CWRP). The CWRP project involved the reconstruction and improvement of approximately six miles of mostly open, unlined channels that make up the Logan and Northern, as well as the Hyde Park and Smithfield canals. The project incorporated new precast pipeline, box culverts, a section of pressurized pipe, metering systems, turn-outs, head gates, and improved maintenance access.
Michigan Utility’s New Pumps Underscore Advancements In Wastewater Handling
Ypsilanti’s pumps, originally put into service in 1982, became priority candidates for replacement after operating ten years beyond their expected 20 year service life. The Ypsilanti Community Utilities Authority (YCUA), included the project in the utility’s Master Plan.
Case Study Of Swan Turbiwell Quarterly Calibrated Unit Versus Quarterly Verified Unit
This paper presents the field data collected over a twelve month period at a municipal surface water treatment plant employing traditional clarification and filtration. The final effluent turbidity was monitored by the third party compliance turbidimeter, a Swan Turbiwell (Protocol Turbiwell) was calibrated quarterly just as the compliance turbidimeter, and a second Swan Turbiwell (Non-protocol Turbiwell) that was not calibrated. By Shaun Sharrett and Randy Turner, Swan Analytical USA
WASTEWATER MANAGEMENT APPLICATION NOTES
Wastewater Treatment Facility Complements On-Line Monitoring With Automated Control
The Minnesota River Valley Public Utilities Commission (MRVPUC) provides wastewater treatment for the City of Le Sueur and the City of Henderson in south-central Minnesota. A significant factor facing the utility is the highly varying phosphorus load that challenges operators to meet the utility’s annual average discharge limit of 1.0 mg/L total phosphorus.
Pipe Repair On A Budget
A new pipe-repair solution promises to save time and money, while also being sustainable, long-lasting, fully scalable, and safe for workers.
Reliable M2M Communication And Networking Technology Connects Wastewater Facilities
As the world becomes increasingly connected, the integration of smart devices and tools, such as sensors, process control devices, security cameras, for example, have increased the need for well-established, secure machine-to-machine (M2M) communication and networking solutions. Many companies depend on effective communication technologies to reduce overhead costs and improve their bottom lines. By Paul Mercier, Regional Manager for OEM, Utility and Energy Markets, FreeWave Technologies, Inc.
A Comparative Study Of On-Line And Laboratory TOC Analyzers For Analysis Of Municipal Wastewater
This application note presents comparative data obtained on influent and effluent wastewater samples using laboratory and on-line TOC analyzers employing the heated sodium persulfate oxidation technique in USEPA-approved methods 415.3 and SM 5310C.
Wireless Lift Station Monitoring Application Note
Lift stations are remote pumping facilities that move wastewater from lower to higher elevation. Monitoring lift stations is important to collection system operators.
Water Distribution System Wireless Monitoring Application Note
Providing water distribution monitoring solutions since 1987, Telog continues to offer the industry’s leading remote data acquisition system including the most comprehensive family of battery powered, environmentally rugged wireless monitors available from any single supplier.
Wireless PRV Monitoring Application Note
Pressure reducing valves (PRVs) are used throughout water distribution systems to reduce pipeline pressure to a predetermined set point. This decreases water loss and prevents pipe breaks.
Hydrant Pressure Monitoring Application Note
One of the most popular uses for the Telog Hydrant Pressure Recorders (HPRs) is to monitor and analyze customer pressure complaints. The HPR is ideally suited for this application because it is rugged, highly portable, and can give a complete, time stamped picture of the pressure differential between the customer’s water pressure and the water pressure being delivered by the utility.
Dissolved Oxygen Measurement In Wastewater Treatment
A wastewater treatment plant separates solids from the liquid, and consists of two basic stages: primary treatment and secondary treatment.
Dissolved Oxygen Measurement
One of the most important measurements in the determination of the health of a body of water is its dissolved oxygen content. The quantity of dissolved oxygen in water is normally expressed in parts per million (ppm) by weight and is due to the solubility of oxygen from the atmosphere around us.
WASTEWATER MANAGEMENT PRODUCTSMore Wastewater Management Products
LATEST INSIGHTS ON WASTEWATER MANAGEMENT
Next-Level Meter Reading And Customer Service
As data collection becomes more popular, management of that data — what information is actionable, and what actions should be taken — becomes an important consideration. DataZeo is dedicated to refining meter reading, field operations, and customer communication.
Distribution System Monitoring: How To Collect Data In Remote Locations
Consistent and reliable data acquisition is recognized as essential to efficient operations and asset management. But collecting data outside the plant can be difficult, especially when no power is available.
A New Way To Measure Flow
CiDRA is a process optimization company traditionally focused on the mining, oil, sands, pulp and paper, and agro processing industries, but now setting its sights on water and wastewater. Why the sudden interest?
Math Solutions: Flow Rate Conversions
Water Online’s “Math Solutions” series, presented by wastewater consultant and trainer Dan Theobald (“Wastewater Dan”), provides an understanding of the sometimes difficult calculations involved in achieving wastewater operator certification.
How To Avoid Sewer Stench And Corrosion
You might think sewer stench should be expected, considering what’s flowing through the pipes. But that’s not the expectation of the public — nor should it be, since there are tools available to greatly mitigate offensive odors.
The Benefits Of Process Monitoring
Efficiency is the buzzword with utilities these days — there is little tolerance for wasted time, money, or water.