Nicky Eshtiaghi’s Post

Just Published a chapter in the Handbook of Digital Twins. The nature of a digital twin (DT) in the context of management of an engineering asset is discussed. Of focus are principles for designing a DT for maintenance planning. These principles are presented as a framework, and the use of the framework to design a DT is illustrated using a case study. The DT was developed at the Carlsbad Desalination Plant and provides a platform to estimate the performance of different, competing policies for the restoration and replacement of membrane elements in reverse-osmosis pressure vessels. Seasonal algae blooms in the feedwater reservoir accelerate the degradation of these membranes, and the plant operator seeks to continuously improve the effectiveness of maintenance interventions. In the description of the case, we show how the principles are applied. #DigitalTwins, #Maintenance, #Operationalresearch

I am thrilled to announce the publication of our recently finalized research project report entitled "Laboratory Testing of Engineered Media for Biofiltration Swales," under supervision of Dr. Habib Ahmari, Ph.D., P.E. at The University of Texas at Arlington, funded by the North Central Texas Council of Governments (NCTCOG). A special thanks to dedicated team members (Dr. Habib Ahmari, Ph.D., P.E., Ashish Bhurtyal, MSc, EIT, Dr. Srinivas Prabakar, Qazi Ashique E Mowla, Hassan Alsaud) for their endless effort in sustainable water resources management studies. I would also like to express my gratitude to the FLOW-3D family, especially Ms. Cristine Webb, for providing the research license to assess the complex behavior of suspended sediments in the proposed Engineered Media using Flow-3D Hydro package. Link to the report: https://lnkd.in/eZHwjZxs Summary of research: The study focused on revolutionizing stormwater management in urban areas. Roadway runoff is a major source of water pollution in the US. Our study explored the use of expanded shale in bioswales – a sustainable solution with enormous potential. This research included three key experiments: 1️⃣ Drainage tests to assess the soil media's capacity. 2️⃣ Suspended sediment tests to evaluate the efficiency of expanded shale in removing TSS (Total Suspended Solids) and turbidity. 3️⃣ Chemical tests to measure its ability to remove nitrogen, phosphorus, and zinc. Using a unique setup of expanded shale with sandy clay soil, the results were remarkable: - TSS removal rates up to 68% - Turbidity removal rates up to 40% - Significant reduction in nitrogen, phosphorus, and zinc under certain conditions, with removal efficiencies up to 90%. 🌊 We also studied flow and sediment dynamics using advanced techniques, gaining insights into how bioswales efficiently remove pollutants from stormwater. Our comprehensive approach combines lab modeling, visualization, and simulations, offering a deeper understanding of bioswale functionality. This research opens doors to more effective stormwater management, benefiting our environment and communities. #Research #WaterQuality #Sustainability #EnvironmentalScience #Innovation #NCTCOG #UTA #WaterResources #CivilEngineering #flow3d #cfd #sustainability #sustainablewater

(LUCAS) technology for biological treatment On the sludge treatment plant after the primary sedimentation system, the effluent flows to the biological reactors where the aerobic bacteria are used to purify the wastewater in order to meet most of the required parameters to be treated sludge effluent compliant. The biological process consists of LUCAS process which involves a cyclically operating activated sludge system with a compact and modular design, it configured and operated to perform oxidation of organic pollutants, nitrification, denitrification, and solids separation in a single tank by cycling the main zone of the reactor through phases of complete mixing, settling and decant of the clarifier supernatant. #Sludge_treatment_plant #Waste_water_treatment #STP #WWTP #Biological #Biological_treatment #Engineering #LUCAS

Desalting Handbook for Planners 💦 ✨Good Book in Desalination ✨ Book contents 👇 Chapter 1: Introduction. Chapter 2: Desalting Applications Chapter 3: Water Chemistry Chapter 4: Desalting Processes. Multiple Effect Distillation Process. Multi-Stage Flash (MSF) Distillation. Vapor Compression. Electrodialysis. Reverse Osmosis and Nanofiltration. Chapter 5: Pretreatment. Chapter 6: Post-Treatment. Chapter 7: Process Selection and Water Cost. Chapter 8: Environmental Considerations. Chapter 9: Cost Estimating Procedures. #desalination #RO #NF #MSF #MED #VC #ED #watertreatment #seawater #groundwater #purification #filtration #plantdesign #design #water #treatment #physical #chemical #chemistry #Sakr

Hello Engineers, 📢 Join Bentley Webinar: Addressing Urban Water Supply Implementation Challenges Using OpenFlows Date & Time: April 10, 2024 | 11:30 am IST Register here: https://lnkd.in/grfTdzKe Join Subhranil Chakrabarti and Sandeepan Choudhury for a webinar where they will explore the remarkable capabilities of OpenFlows WaterGEMS in depth. During this webinar they will demonstrate project-specific applications of WaterGEMS, granting you a profound understanding of hydraulic systems. Key Takeaways: Using WaterGEMS as a tool for robust design of both intermittent and 24x7 water supply schemes. Discover Valve placement using the criticality tool. Gain insight on How to View the Criticality Analysis Results. Discover how the WaterGEMS scenario tool can be used for assessing impacts during changes during implementation. Register Now!! #openflows #hydraulics #hydrology #WaterGEMS #bentleysystems

#Materials #CallforPaper #SpecialIssue "Advances in Low Carbon #Concrete and Structures " is open for submissions! You can submit it by clicking the "Submit to Special Issue" option on the left side of the following link: https://lnkd.in/gjESCA-F Guest Editors are Dr. Wenyu Liao,  Dr. Jihui Qin, and Dr. Hongyan Ma from Missouri University of Science and Technology. Welcome to submit your paper before 20 November 2024. If you are willing to submit a paper and need more details, please contact Ms. Erin Jiang<erin.jiang@mdpi.com>. Keywords #low-carbon structure low-carbon concrete supplementary #cementitious material (SCM) alternative cementitious material carbon capture, utilization, and storage (CCUS) carbon footprint embodied carbon thermal energy storage (TES) life cycle assessment (LCA)

In this serpentine contact tank example, FLOW-3D POST visualizes flow behavior and velocity using streamlines, helping to identify critical zones like turbulence, which is essential for proper disinfectant mixing. It also reveals dead zones, recirculation areas, and potential flow bypasses, providing actionable insights to optimize tank performance. By simulating both the neutralization of pathogens and the natural decay of peracetic acid, FLOW-3D HYDRO’s reaction kinetics model ensures accurate predictions, empowering engineers to make data-driven decisions for effective water treatment. Learn more about FLOW-3D HYDRO for water and wastewater treatment at https://lnkd.in/gypBJ-p #cfd #computationalfluiddynamics #flow3d #flow3dhydro #simulation #simulationsoftware #simulations #engineering #technology #fluiddynamics #fluidflow #turbulence #WaterTreatmentSolutions #EngineeringInnovation

In Dead-End mode, all feed water is directed through the UF membrane without generating a reject stream, achieving 100% water recovery. Contaminants are retained on the membrane surface, leading to increased transmembrane pressure (TMP) and decreased permeability, necessitating periodic cleaning. This mode is favored for its lower energy consumption and simpler design, despite the higher fouling rates, which are managed through frequent backwashes and chemical cleanings. References: DuPont, Pureflow, Inc. Click to see the previous post: https://lnkd.in/dzx3CzBW #ultrafilteration #membrane #water_purification #water_treatment #POD #Persia_optimized_designing_co #Project_management #Consultation #Designing #Engineering #Software #Software_Development #pumping_station  #seawater #desalination  #intake #wastewater #sewerage #water_network #innovation #technology #environment #water_management #water_scarcity

Excited to share that I recently completed the "Nanofiltration and Reverse Osmosis in Water Treatment" course from TU Delft! This course provided valuable insights into real-world water treatment applications. I gained a strong understanding of: Membrane types and classification Rejection mechanisms for ions and organic compounds Advantages and limitations of Reverse Osmosis (RO) systems RO applications for seawater, brackish water, and freshwater treatment Water flow management within membrane modules RO plant design considerations, including fouling mitigation Concentration polarization and scaling prevention strategies Calculation methods for RO unit requirements and treatment plant design I'm eager to leverage this newfound knowledge to tackle real-world water treatment challenges in my field! #watertreatment #nanofiltration #reverseosmosis #membranefiltration #wastewatertreatment #tudelft #chemicalengineering #watermanagement #civilengineeringandgeosciencefaculty #delftuniversityoftechnology

🌊 Optimizing Reverse Osmosis Systems: A Comprehensive Guide 🌊 I'm excited to share a detailed summary on the design and optimization of Reverse Osmosis (RO) systems. This guide covers everything from evaluating feed water quality to selecting the right membranes and calculating system recovery. Whether you're working on water purification for industrial applications or improving water quality standards, this resource offers valuable insights. #WaterTreatment #ReverseOsmosis #Sustainability #Engineering