One of the most commonly used measurements in the water and wastewater industry is pH. A measurement of how acid or alkaline a substance is, a pH reading can instantaneously indicate a problem with the water. Another common and useful measurement is oxidation-reduction potential (ORP). Treatment facilities use ORP sensors to optimize disinfection and biological nutrient removal processes.
Every day you hear things like “push your data into the cloud” or the newest functions of “cloud computing”. But what does this all mean? And what does it mean for utilities and facilities? Well, if you’re looking into Cloud SCADA, it can mean then difference between having to purchase and maintain software and hardware versus utilizing the internet and cloud computing platforms to serve as the framework for your SCADA system. That translates into time and money saved in the long run.
With the introduction of new measurement technologies and the myriad of performance claims from sale literature, it’s easy to lose sight of the important elements that an effective flow meter offers no matter what technology is used. Long known for their longevity, reliability, and long term performance, Venturi meters provide the widest variety of measurement options in piped systems for liquids, gas, steam, and mixed media of any metering technology – all while offering the highest degree of traceable accuracy. By Primary Flow Signal, Inc.
There have been many publications lately that claim universal appeal of the ORP sensors and their applicability across the board. This concerns me, because the authors sometimes forget to mention some well-known practical limitations of the method, let alone the realities of water treatment applications potentially influencing the sensor performance.
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
In recent years, the debate about which technology is best suited for water and wastewater level measurement and monitoring is heating up. There are those who argue that ultrasonic level technology has been uncontested as the standard for level and open-channel measurement applications in the water industry.
Wastewater treatment can be a dirty job — but someone has to do it. At a Canadian wastewater treatment plant (WWTP) serving around 75,000 citizens, between 240 and 300 cubic meters of digested sludge are treated each and every day!
Washington Suburban Sanitary Commission (WSSC) Development Services Group reviews hydraulic plans for approximately 160 proposed development plans per year. This includes water and sewer system extensions as well as approximately 172 small-site utility plans (commercial private systems) that connect to the existing water and sewer network in two large Maryland counties.
The next big thing is here and it’s the Industrial Internet of Things (IIoT). With pundits waxing philosophical on this big breakthrough, it’s hard to cut through the noise and understand what the IIoT actually is and how it applies to individual plants. I offer the following as a definition. The IIoT means collecting, interpreting, and applying data to actively improve processes or operations. To understand how the IIoT applies to a wastewater treatment plant, look no further than your front yard.
Traditionally, water system operators have relied on SCADA systems to provide insight into their networks.
When looking for a way to reduce plant operating costs, one of the potentially simplest and often least expensive solutions is to measure liquid and gas flow more accurately. Plant upgrade projects that focus on the continuous improvement of flow measurement and control can trim overall production costs by eliminating waste and reducing maintenance costs.
One of the most common processes in wastewater treatment is the activated sludge method, which biologically treats the wastewater through the use of large aeration basins. This process requires the pumping of compressed air into the aeration basins where a diffuser system ensures the air is distributed evenly for optimum treatment. The energy needed to provide compressed air is a significant cost in the operation of a wastewater treatment plant.
Facility administrators will find the advanced ST100 Series Thermal Mass Air/Gas Flow Meter from Fluid Components International (FCI) helps them improve the accuracy of specialty gas point of use and sub-metering operations to achieve accurate billing in their labs for better cost tracking and control.
Coriolis measurement has been adopted as a default technology in many application scenarios due to its high accuracy and immunity to process variables (temperature, pressure and flow profile). However, Coriolis wasn't always widely accepted. Two applications, in particular, helped what was once a nascent flow measurement technology gain a foothold in the marketplace.
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.
Rapidly produce FREE engineering designs for activated sludge wastewater treatment plants.
Built for both non-technical (basic inputs) and technical (detailed inputs) users, our WWTP Design Generator automatically integrates decisions and calculations from each engineering discipline (process, mechanical, civil, architectural, electrical) to create a preliminary design for a wastewater treatment plant (WWTP).
What used to take several weeks of work involving experts and engineers from multiple disciplines can now be completed within six hours using Water Online’s groundbreaking WWTP Design Generator.
Click here to start your design today.
A real-world, industrial application of remote process monitoring proves that a little technology can go a long way in terms of cost savings and process improvement.
The 7th Annual Smart Water Systems Conference, presented by SMi Group, brought smart water experts from around the world to London for two days in April. As an event partner, Water Online had interview access to event speakers — including those from some of Europe’s largest water providers — who were surveyed on trends and challenges in smart water. Read on to hear the thoughts of four smart water experts on four key questions.
For decades now, the ubiquity of the internet has been essential to modern life. Services like email, Google, and Amazon have connected us to the each other, the vast collective knowledge of humankind, and brought whatever we desire to our doorsteps with just a few motions of our fingers.
It’s increasingly obvious to me that the gap in the general understanding of technology is continuously increasing with those that are not working in the space every day. I am referring to industrial technology versus the general consumer technology market.
This heated debate continues to rage on in boardrooms, online forums, and tradeshow floors around the world. It pits SCADA teams, seeking to maximize system uptime, against IT departments, working to keep their systems secure. What follows is a very brief overview of why water and wastewater utilities choose to allow remote access and what steps should be taken to minimize the risk.