scaling control Articles
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Calcium Sulfate Scale Control with ML2580
Background Mining company operates an ore roasting operation for gold recovery in the western US. SO2 is generated in the process and quenched with water creating a super saturated stream of SO4 . Calcium sulfate (gypsum) scale forms in the process plumbing and reduces critical flow rates. After months of reduced production, the decision was made to shut down and hydro-blast the system. The water ...
By ChemTreat
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A self-tuning fuzzy controller with union rule base for switched reluctance motor drives
This paper presents a modified self-tuning fuzzy controller with union rule base for application in the switched reluctance motor (SRM) drive system. Based on the redevelopment of control rule base, this paper aims to simplify the programme hierarchy and computational complexity of the controller by reducing the number of fuzzy sets in the membership function (MF) without losing the system ...
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Full-scale control of Mycolata foam by FEX-120 addition
Foaming incidents in activated sludge treatment plants are a worldwide problem and occur on a regular basis in both municipal and industrial activated sludge treatment plants. Foaming is most often caused by excessive growth of filamentous bacteria, especially the gram-positive ones affiliated within the Actinobacteria, e.g. the branched Mycolata or CandidatusMicrothrix parvicella. Previous ...
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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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NNI Publishes Proceedings of Meeting on Carbon Nanotube Commercialization
The National Nanotechnology Initiative (NNI) published on March 12, 2015, the proceedings of a September 15, 2014, meeting on “Realizing the Promise of Carbon Nanotubes: Challenges, Opportunities, and the Pathway to Commercialization,” held at the National Aeronautics and Space Administration (NASA) Headquarters. According to NNI, a number of common themes and potential future ...
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ColArt select Autoscribe Matrix customer feedback system case study
Organisation Headquartered in Middlesex, England, ColArt has been distributing arts supplies into more than 120 countries from 14 distributors worldwide since 2001. With a turnover on average of £130 million a year, ColArt aim to provide quality and consistent service through sustained commitment and investment. Their key aim is for global structure and control to achieve scale economies, ...
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Nanoscience to nanotechnology to manufacturing transition
The primary focus of this review is on the transition of nanoscience to nanotechnology to manufacturing, specifically related to nanostructuring of materials for next–generation systems having superior performance. We start with the discussion of intrinsic advantages of nanoscale materials and systematic approach for transition into systems. As the feature (grain) size of solid–state materials ...
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Adding realism to simulated sensors and actuators
Abstract: In this paper, we propose a statistical theoretical framework for incorporation of sensor and actuator faults in dynamic simulations of wastewater treatment operation. Sensor and actuator faults and failures are often neglected in simulations for control strategy development and testing, although it is well known that they represent a significant obstacle for realising control at ...
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Low energy/cost desalination: low dose and low mean ion resident time in concentrate stream of electro-dialysis reversal
Species, dose, and mean ion resident time (MIRTc) in the concentrate of electro-dialysis reversal (EDR) desalination are analysed. In the classical EDR, dimensions, flow, and velocity of dilute and concentrate are equal; Langelier saturation index (LSI) and CaSO4 saturation are used to control the scaling and fouling processes in concentrate, as such LSIKeywords: acids, Ca2+, Mg2+, HCO-3, SO2-4, ...
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Plasmon-enhanced optical transmission of nanostructured metallic multilayers
Surface plasmons (SPs) – charge oscillations on metallo-dielectric interfaces – offer the possibility of controlling light at a scale much smaller than its wavelength, even down to the nanometre scale for visible wavelengths. Experiments have been performed to study the influence of SPs on the optical transmission of metallic multilayers in which one of the layers has been patterned at the ...
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Innovative Chemical Feed Systems - Sure N Safe Series
Bisan Inc's chemical feed systems - Sure N’ Safe® is designed in an innovative way keeping in mind the extra safety concerns from operator, entire system is housed into a large windowed FRP enclosure that contains all leaks from the pumping system within the enclosure. The enclosure is fully drained to the containment scale and by this the operator is assured that anything less than ...
By Bisan Inc.
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Hazardous area weighing - Case study
INDUSTRY: CHEMICAL PROCESSING EQUIPMENT USED: CARDINAL'S HYDRAULIC TRUCK SCALE PAIRED WITH THE ICAN & ISITE The Perfect combination!!!!! In the chemical processing industry, capturing a weight can be challenging. Many areas of their plant are classified as hazardous/explosion. Our customer’s plant ran 24 hrs. a day 7 days a week and could not experience any ...
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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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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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City of Orlando Wastewater Treatment Plant Belt Filter Press Struvite Scale Control & Enhanced Flocculation case study
Five month evaluation of Hydropath technology’s ability to treat magnesium ammonium phosphate hexahydrate (Struvite, NH₄MgPO₄•6H₂O) scale and to enhance flocculation resulting in reduced polymer usage Location: City of Orlando Wastewater Treatment Plant. Address: 5100 LB McLeod Rd., Orlando, FL 32811 Application: Struvite accumulation in belt press #5. Belt press ...
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Preventing scale in recreational vehicles and motorhomes
Over 80% of North America is affected by hard water, which is a major problem for the owners of RVs and Motorhomes. Consequently, whatever State you are visiting in your RV, or if you have a motorhome permanently located in a hard water area, limescale will clog pipes, ruin appliances, destroy faucets and cloud glassware. The award-winning, patented, Scalewatcher water-conditioner, from ...
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Concentrating primary reverse osmosis concentrate by direct contact membrane distillation
In the present work, a thermally driven membrane process-direct contact membrane distillation was investigated for concentrating the primary reverse osmosis concentrate to minimize the water loss. The primary reverse osmosis concentrate used in the work was obtained from the RO process of the direct drinking water preparation system designed for the 29th Olympic Games with 50% recovery. The feed ...
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Deutsche Bahn, Germany - Deutsche Bahn uses Sialex to help control costs at its Mainz facility - Case Study
Deutsche Bahn (DB) has employed Sialex-Rings to control “Scale and Corrosion” in the offices water infrastructure, at their facility in Mainz, Germany Since 2007. After several years of escalating maintenance costs associated with dealing with the results of “hard” water, DB considered two options; an expensive “water softener” option or an environmentally ...
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Tunnel Fires: Experiments on Critical Velocity and Burning Rate in Pool Fire During Longitudinal Ventilation
In this study, the 1/20 reduced-scale experiments using Froude scaling are conducted to investigate the effect of longitudinal ventilation velocity on the burning rate in tunnel fires. The methanol pool fires, acetone pool fires, and n-heptane pool fires with a heat release rate ranging from 2.02 to ~6.15 kW, 2.76 to ~11.04 kW, and 2.23 to ~15.6 kW, respectively, are used. A load cell is used to ...
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Chemically enhancing primary clarifiers: model-based development of a dosing controller and full-scale implementation
Chemically enhanced primary treatment (CEPT) can be used to mitigate the adverse effect of wet weather flow on wastewater treatment processes. In particular, it can reduce the particulate pollution load to subsequent secondary unit processes, such as biofiltration, which may suffer from clogging by an overload of particulate matter. In this paper, a simple primary clarifier model able to take ...
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