water treatment control Articles
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Instrumentation, control and automation in wastewater – from London 1973 to Narbonne 2013
Key developments of instrumentation, control and automation (ICA) applications in wastewater systems during the past 40 years are highlighted in this paper. From the first ICA conference in 1973 through to today there has been a tremendous increase in the understanding of the processes, instrumentation, computer systems and control theory. However, many developments have not been addressed ...
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Case study - Northern Guilford High and Middle Schools
Project: Northern Guilford High and Middle Schools Location: Greensboro, NC Application: Toilet Flushing and Fire Suppression System(s): 360,000 Gallon Cistern, 270 GPM Rainset w/ Back-up, Water Supply, Water Treatment, Controls Project Description This education complex benefits from a centralized rainwater system and both buildings share a common cistern. Rainwater from the middle and high ...
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Instrumentation, Control and Automation in wastewater ? what happened from London 1973 to Narbonne 2013. Water Science & Technology
Abstract: Key developments of instrumentation, control and automation (ICA) applications in wastewater systems during the past 40 years are highlighted in this paper. From the first ICA conference in 1973 through to today there has been a tremendous increase in the understanding of the processes, instrumentation, computer systems and control theory. However, many developments have not been ...
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Corrosion resistant FRP reduces maintenance issues for water and wastewater treatment and control
At this Wastewater Treatment Plant in Glendale Heights, IL, an aluminum slide gate had to be forced open using a front-end loader and a chain after seizing in place due to inevitable corrosion. The corrosive bond was so severe that the chain snapped upon the first attempt. The water and wastewater treatment and control industry is a prime example of how constant exposure to toxic elements can ...
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EVAPCO’s advanced cooling solutions - Case Study
EVAPCO’s advanced cooling solutions help realize massive power savings and vastly reduced maintenance. The 17-story, 380,000-sq-ft building was constructed in 1981. Goals: Find a long-term solution to outdated cooling infrastructure Prioritize energy efficiency Minimize maintenance Controls to optimize operation of the entire mechanical system Streamline water treatment ...
By Evapco Inc.
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Total coliphages removal by activated sludge process and their morphological diversity by transmission electron microscopy
This study was conducted to isolate phages in treated sewage collected from wastewater treatment plant, and explore their morphological diversity by transmission electron microscopy (TEM). Fates of total bacteriophages and their reduction by biological treatment were also assayed. Phages were isolated using the plaque assay then negatively stained and observed by electron microscope. Electron ...
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Steel mill saves 200,000 € in closed circuit treatment with Cetamine technology - Case Study
1. Background One of the largest integrated iron and steel factory in Mediterranean Region established a new blast furnace with a capacity of 2500 m3 and casting capacity of 8500 tons/day. The plant requested a proposal for the flushing of the new closed circuit system with a total volume of 1500 m3.The challenge was the blow down management during the flushing operation as it will be ...
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Treatment of leachate using the DMT MemBioRex® technology
One of the most difficult waste waters to treat is leachate from a landfill. Leachate is water from the degrading waste and rainfall which percolates through the waste. Leachate usually contains a high concentration of ammonium, low concentrations of phosphor, high salinity, high alkalinity and various concentrations of heavy metals. Combined with strongly fluctuating flows, a high pH and ever ...
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The Cryptosporidium Water Crisis
One major event to strike the water industry recently, was the Lancashire Cryptosporidium water crisis. Cryptosporidium is a parasite found in livestock, which can have some severe consequences on the gastrointestinal system when ingested. Lancashire has seen 300,000 households suffer from a water contamination incident that’s forced residents to buy bottled water for weeks. Now residents ...
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Trihalomethane reduction in drinkable water by controlled chlorination and use of hydrogen peroxide
The reduction of trihalomethane (THM) formation in the water treatment process by a controlled chlorination of ammonia and successive quenching with hydrogen peroxide has been studied. The optimum values of the process parameters have been determined with a calculation programme that makes use of the kinetic constants determined with the water to be treated. The obtained data have been verified ...
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Inhibition of Daphnia magna's occurrence in drinking water treatment process by controlling its phototactic behavior
Cladocera zooplankton as carriers of bacteria result in biological risk due to their occurrence in drinking water treatment systems. In this paper, bench-scale experiments were performed to investigate the inhibition effect on Daphnia magna (D. magna) by controlling its phototactic behavior. The results showed that UVA had a negative effect on the phototaxis of D. magna, indicating an active ...
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Water quality testing: solutions from catchment to waste
Globally, over 80% of the wastewater generated by society flows back into the environment without being treated or reused.1Clean water is an essential part of daily life, from catchment all the way through to wastewater treatment, therefore analysis throughout the whole cycle is crucial. Whether in lakes, pipes, or bottles, we can accompany you with our range of instruments, test kits and ...
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Efficacy of drinking-water treatment residual in controlling off-site phosphorus losses: A field study in Florida
Received for publication August 23, 2008. Land application of drinking-water treatment residuals (WTR) has been shown to control excess soil soluble P and can reduce off-site P losses to surface and ground water. To our knowledge, no field study has directly evaluated the impacts of land application of WTRs on ground water quality. We monitored the effects of three organic sources of P (poultry ...
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What is cooling tower water treatment?
It is a dynamic manufacturer and supplier of sustainable water and wastewater treatment solutions. The cooling tower water treatment is an integral part of a process in many in industries. The water treatment problems can very costly when the cause of heat transfers in the cooling tower, health and safety concerns and equipment failure. For this problem some company uses a unique approach, ...
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Powerful Landfill-Safe Absorbent
Saturated zeolites that are loaded with toxic heavy metals should be considered as eco-friendly compounds that can be landfilled. The loaded zeolite has high leaching resistance preventing easy release of the adsorbed heavy metals. In particular situations (e.g. when loaded with ammonia and phosphorus) the spent zeolite can be used as a soil amender material and slow release fertilizer. This, ...
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Cost overruns & non-compliance in stormwater treatment. Risk management strategies.
Stormwater treatment is a vital part of construction site ESC planning and management. However, even though conventional sediment control is a fairly commoditized service, most project managers still find it challenging to estimate water treatment cost in the planning phase and manage the cost overruns, project delays and pollution incidents during the project execution. Why is it challenging ...
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What is Genclean Advanced Oxidation Disinfection?
What is Advanced Oxidation Disinfection? In an overview, advanced oxidation disinfection is a specific treatment process designed to oxidize, disinfect, and remove organic and certain inorganic contaminants from water and wastewater through the generation of hydroxyl radical (OH) and other specific compounds. What is Oxidation Reduction Potential (ORP)? ORP stands for oxidation reduction ...
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Latest Ransomware Threatens Municipal Water Treatment
Ransomware seems like it’s everywhere in the news lately. Ransomware is software that installs itself on a computer, often when the user opens a seemingly harmless email attachment. Once installed, the ransomware blocks access to critical files and data until the user meets the demands of the person remotely controlling the ransomware. This usually involves a cash payment. A widely reported ...
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The importance of security in water infrastructures and the water sector
A thwarted attack against a water treatment plant in Florida in 2021, a failed attempt against pumping facilities in Israel in 2020, or a massive attack against the water supply of the Swiss city of Ebikon in 2018 through thousands of malware requests increased concerns within the water sector. While water infrastructures are not attacked as much as other utilities, they are vulnerable due to ...
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DoD Corrosion Prevention and Control Program demonstrates 20% make-up water reduction and 50% reduction in blow-down utilizing Zeta Rod Water Management Systems
The U.S. Army Corps of Engineers Research Lab (USACE ERDC/CERL) has published data collected during a 24-month demonstration/validation project in which the Zeta Rod® Water Management System was evaluated for its ability to deliver documented water conservation results while providing corrosion, scaling, and biofouling protection in open-loop evaporative cooling systems. The report, titled ...
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