scaling control system Articles
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Fate of hydrocarbon pollutants in source and non-source control sustainable drainage systems
Sustainable drainage (SuDs) is an established method for managing runoff from developments, and source control is part of accepted design philosophy. However, there are limited studies into the contribution source control makes to pollutant removal, especially for roads. This study examines organic pollutants, total petroleum hydrocarbons (TPH) and polycyclic aromatic hydrocarbons (PAHs), in ...
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DSC: software tool for simulation-based design of control strategies applied to wastewater treatment plants
This paper presents a computer tool called DSC (Simulation based Controllers Design) that enables an easy design of control systems and strategies applied to wastewater treatment plants. Although the control systems are developed and evaluated by simulation, this tool aims to facilitate the direct implementation of the designed control system to the PC of the full-scale WWTP (wastewater treatment ...
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Economy SF6 service carts
The completely newly developed generation of service carts not only impresses with its compact construction and modern design, but also combines state-of-the-art technology and ergonomics. The completely newly developed generation of service carts not only impresses with its compact construction and modern design, but also combines state-of-the-art technology and ergonomics. Everything is ...
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Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer network
Since eutrophication has become increasingly severe in China, nitrogen and phosphorous have been the concern of wastewater treatment, especially nitrogen removal. The stabilization of the intelligent control system and nitrogen removal efficiency were investigated in a pilot-scale aerobic-anoxic sequencing batch reactor (SBR) with a treatment capacity of 60 m3/d. Characteristic points on the ...
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Yokogawa Releases Dynamic Real Time Optimizer, a New Solution in the OpreX Asset Operations and Optimization Family
Yokogawa Electric Corporation (TOKYO:6841) announces the release of Dynamic Real Time Optimizer, a solution in the OpreXTM Asset Operations and Optimization family. Using a combination of first principles simulation and multivariable predictive control technology, the Dynamic Real Time Optimizer software helps to optimize plant operations. This integrated solution is based on Yokogawa’s ...
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Controlling scale in water systems helps prevent legionella
The Legionella bacterium, Legionella Pneumophila (LP), the fundamental agent of Legionnaire’s Disease, is a water-based organism, which causes infection when inhaled in an aerosol form. Legionnaires' Disease acquired its name in 1976 when an outbreak of pneumonia occurred among persons attending a convention of the American Legion in Philadelphia. Later, the bacterium causing the illness ...
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New Patent: Use of BCP™ 5000 for Sulfur Deposit Control in Geothermal Power Plant Cooling Water
AMSA, Inc. is pleased to announce the issuance of US patent 9,365,444, “Formulations for use in sulfur scale control in industrial water systems.” In particular, it claims a method for removal and inhibition of elemental sulfur deposits in geothermal utility cooling water systems. Foreign patents covering other countries with important geothermal resources have also previously issued ...
By AMSA, Inc.
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The open real-time control (RTC)-Tools software framework for modeling RTC in water resources sytems
Real-time control-Tools is a novel software framework for modeling real-time control and decision support in water resources systems. It integrates different control paradigms ranging from simple feedback control strategies with triggers, operating rules and controllers to advanced optimization-based approaches such as model predictive control (MPC). A key feature of the package is the modular ...
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Real-time modeling of trihalomethane formation in a full-scale distribution system
Using a combination of modeling and online water quality instrumentation, utilities can produce real-time predictions of trihalomethane (THM) formation in their distribution system. In this study, an empirical model was used to predict THM formation and embedded into a full-scale supervisory control and data acquisition (SCADA) system. Online water quality instrumentation provided input values ...
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Application of powdered activated carbon (PAC) for membrane fouling control in a pilot-scale MBR system
Membrane fouling is considered to be the most serious drawback in wastewater treatment when using membrane bioreactors (MBRs), leading to membrane permeability decrease and efficiency deterioration. This work aims to develop an integrated methodology for membrane fouling control, using powdered activated carbon (PAC), which will enhance the adsorption of soluble microbial products (SMP) and ...
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Total Dissolved Solids (TDS) Measurement
Definition Total Dissolved Solids (TDS) is a measure of the sum of all inorganic and organic substances in a liquid in molecular, ionized or micro-granular colloidal suspended form. The solids must be small enough to survive filtration through a sieve the size of two micrometer. TDS solids are normally found in all freshwater systems. Major applications of TDS are: at low levels the study of ...
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The Control of pH and Oxidation Reduction Potential (ORP) in Cooling Tower Applications
The importance of keeping cooling tower water in proper chemical balance is becoming clearer. Cooling tower treatment control systems can limit scale formation to improve efficiency, limit corrosion to increase the service life of the cooling water system, and maintain a residual halogen level to reduce liability associated with biological growth, particularly Legionellae. The use of automatic ...
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Superior Manufacturing Division, Magnatech Corporation Case study
15 Years of Saving the Environment Some companies seem to always be ahead of their time. Rather than going with the flow, they choose to step out and try something different. That’s what often leads them to success. L&L Products of Romeo, MI, is one of these mastermind companies. The intellectual wheels of Robert Ligon and Eugene Lane started turning in 1958 after realizing a need for ...
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Looking Beyond Chemical Water Treatment Case Study
When you think of an environmentally friendly company, a steel processing plant does not typically come to mind. However, Stripco Inc. of Mishawaka, IN, a manufacturer of production-ready, cold-rolled steel coils, is the exception. In August of 1995, Stripco made a wise decision that also proved to be cost-effective and environmentally- friendly when they installed a Superior Environmentalist ...
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Legionnaire’s Disease and Pontiac Fever
Legionnaire’s Disease Caused by Legionella Pneumophila Legionnaire’s Disease is an environmentally transmitted disease caused by the Legionella Pneumophila bacteria that infect human hosts who breathe minute droplets of water that have been contaminated with the Legionella organism, a gram-negative bacterium. Legionella Pneumophila – the legionnaire’s disease bacteria ...
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