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Input Output Modeling And Adaptive Control Of Chlorine Residual In Drinking Water Distribution Systems
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Book Synopsis Input-output Modeling and Adaptive Control of Chlorine Residual in Drinking Water Distribution Systems by : Umang Desai
Download or read book Input-output Modeling and Adaptive Control of Chlorine Residual in Drinking Water Distribution Systems written by Umang Desai and published by . This book was released on 2000 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Adaptive Water Quality Control in Drinking Water Distribution by :
Download or read book Adaptive Water Quality Control in Drinking Water Distribution written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Regulating the spatio-temporal distribution of chlorine concentration is a crucial component of providing clean drinking water to consumers. Increasingly stringent requirements on the levels of chlorine residual and disinfectant by-products in drinking water distribution networks have created a need for feedback water quality control approaches. Based on investigating the spatially distributed input-output relationship of disinfectant residual in water distribution networks, this dissertation presents an input/output water quality modeling approach that is suitable for designing feedback control algorithms. The water quality control problem is formulated in an adaptive control framework, and a design approach based on parameter estimation and adaptive control scheme is proposed with special consideration on the periodic variation of parameter uncertainty due to varying consumer demands. The periodic parametric uncertainty is represented by a Fourier series with on-line parameter estimation of the unknown coefficients. The indirect adaptive control scheme for single-input single-output (SISO) distribution network is studied, and then is extended to the quality control with multi-booster stations by decomposing the network into sub-systems. A design and analysis procedure is developed for optimal control of chlorine maintenance for the case when the number of chlorine boosters (controllers) is less than the sensors. The general adaptive decentralized control scheme is investigated for control with multiple inputs based on the water quality modeling. The effectiveness of the proposed control schemes are illustrated via simulations based on a real water distribution network and an EPANET example network.
Book Synopsis Adaptive Water Quality Control in Drinking Water Distribution Networks by :
Download or read book Adaptive Water Quality Control in Drinking Water Distribution Networks written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Regulating the spatio-temporal distribution of chlorine concentration is a crucial component of providing clean drinking water to consumers. Increasingly stringent requirements on the levels of chlorine residual and disinfectant by-products in drinking water distribution networks have created a need for feedback water quality control approaches. Based on investigating the spatially distributed input-output relationship of disinfectant residual in water distribution networks, this dissertation presents an input/output water quality modeling approach that is suitable for designing feedback control algorithms. The water quality control problem is formulated in an adaptive control framework, and a design approach based on parameter estimation and adaptive control scheme is proposed with special consideration on the periodic variation of parameter uncertainty due to varying consumer demands. The periodic parametric uncertainty is represented by a Fourier series with on-line parameter estimation of the unknown coefficients. The indirect adaptive control scheme for single-input single-output (SISO) distribution network is studied, and then is extended to the quality control with multi-booster stations by decomposing the network into sub-systems. A design and analysis procedure is developed for optimal control of chlorine maintenance for the case when the number of chlorine boosters (controllers) is less than the sensors. The general adaptive decentralized control scheme is investigated for control with multiple inputs based on the water quality modeling. The effectiveness of the proposed control schemes are illustrated via simulations based on a real water distribution network and an EPANET example network.
Book Synopsis Feedback Control Booster Chlorination Systems by : James G. Uber
Download or read book Feedback Control Booster Chlorination Systems written by James G. Uber and published by IWA Publishing. This book was released on 2004-01-01 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents a foundation of feedback control algorithms and associated modeling tools. This foundation is necessary for the future development of utility-specific control schemes. The ultimate vision adopted in the report is one of a multiple-input, multiple-output (MIMO) feedback control system, where booster chlorination stations are distributed at key points in the system and are fed information from distributed chlorine sensors located in critical areas. The report also presents the elements of a comprehensive design method for distributed chlorine controller design.Originally published by AwwaRF for its subscribers in 2003 This publication can be purchased and downloaded via Pay Per View on Water Intelligence Online - click on the Pay Per View icon below
Book Synopsis Characterization and Modeling of Chlorine Decay in Distribution Systems by : John J. Vasconcelos
Download or read book Characterization and Modeling of Chlorine Decay in Distribution Systems written by John J. Vasconcelos and published by American Water Works Association. This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 2000 IEEE International Symposium on Intelligent Control by :
Download or read book Proceedings of the 2000 IEEE International Symposium on Intelligent Control written by and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 2000 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Model-based and Model Predictive Control for Chlorine Dosing by : Abrar Muslim
Download or read book Model-based and Model Predictive Control for Chlorine Dosing written by Abrar Muslim and published by . This book was released on 2010-01 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Vulnerability and Effectiveness of Chlorination in Drinking Water Distribution Systems by : Refet Sinem Atgin
Download or read book Modeling Vulnerability and Effectiveness of Chlorination in Drinking Water Distribution Systems written by Refet Sinem Atgin and published by . This book was released on 2008 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Residual chlorines are provided in water distribution systems to maintain the inactivation of pathogens intruded into network. The effectiveness of chlorine residuals on pathogen removal can be determined using system vulnerability assessment. The effectiveness of chlorination was determined separately and it was determined as higher than that of the distribution and dilution for two case networks studied. CT (Chlorine Residual Concentration x Contact Time) value which is used as an important criterion to assess the inactivation of pathogens, is complicated to be determined for distribution networks due to varying residence times and chlorine concentrations. The relation of CT value with the removal ratio of pathogens was used to estimate CT value for distribution networks. The results of case studies indicate that CT value determined for a distribution network does not only depend on concentration and contact time of chlorine residuals but also temperature, pH and intrusion location and duration.
Book Synopsis Management of Regrowth and Modeling Chlorine Residuals in the Madison Water Utility Distribution System by : Ryan Campbell
Download or read book Management of Regrowth and Modeling Chlorine Residuals in the Madison Water Utility Distribution System written by Ryan Campbell and published by . This book was released on 2007 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Water Software Systems by : B. Ulanicki
Download or read book Water Software Systems written by B. Ulanicki and published by . This book was released on 2001 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: These conference proceedings reflect the current and future roles of modelling and optimization in the description and management of water industry systems. Balanced views of academic and industry experts from around the world are included in the two volumes of papers. Insights are provided into the experiences of leading researchers and practitioners in apply modelling and optimisation to the management of water quantity and quality.
Book Synopsis Robust Adaptive Model Predictive Control for Intelligent Drinking Water Distribution Systems by : Ayodeji Opeoluwa Ajibulu
Download or read book Robust Adaptive Model Predictive Control for Intelligent Drinking Water Distribution Systems written by Ayodeji Opeoluwa Ajibulu and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Lettre de Monsieur S. L*** Seigneur Polonois à M. le Marquis C. L*** à l'assemblée des états de l'empire à Ratisbonne by :
Download or read book Lettre de Monsieur S. L*** Seigneur Polonois à M. le Marquis C. L*** à l'assemblée des états de l'empire à Ratisbonne written by and published by . This book was released on 1683 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Maintaining Distribution System Residuals Through Booster Chlorination by : James G. Uber
Download or read book Maintaining Distribution System Residuals Through Booster Chlorination written by James G. Uber and published by IWA Publishing (International Water Assoc). This book was released on 2004 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this project was to discuss the potential advantages associated with booster disinfection, the kinetics of chlorine decay and trihalomethane (THM) formation under rechlorination conditions, and the use of network hydraulic and water quality models to locate booster disinfection stations and determine their dose characteristics. The following are highlights from the research: A laboratory procedure was proposed for analyzing chlorine decay under simulated booster conditions. An initial set of experiments evaluated disinfectant decay under booster conditions, and found it to be dependent on both the magnitude and time of the boost dose. THM formation under booster conditions showed no long-term reduction for any set of results, indicating THM formation is not solely dependent on disinfectant concentration. In booster chloramination, boosting with chlorine appeared to be very successful at producing and maintaining a low ammonia concentration by recombining with the ammonia formed from chloramine decay. A second-order model, including a reaction component that represents natural organic matter, was developed to describe chlorine decay and THM formation under booster conditions. A method was developed to determine good locations and schedules for multiple booster doses by a systematic evaluation of alternative designs using network models. By exploring the disinfection decay kinetics under rechlorination, and developing methods for booster chlorination systems design, the project results will assist utilities and consultants in making better use of booster disinfection as a residual maintenance approach. Originally published by AwwaRF for its subscribers in 2003
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2003 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment of Chloramine and Chlorine Residual Decay in the Distribution System by : Zaid K. Chowdhury
Download or read book Assessment of Chloramine and Chlorine Residual Decay in the Distribution System written by Zaid K. Chowdhury and published by IWA Publishing. This book was released on 2007-03-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintaining chlorine and chloramine residual is a key factor that determines potability of distributed water. Decay of these disinfectants is affected by various water quality and infrastructure related factors. Understanding the decay of residuals in the distribution system is critical with respect to safe delivery of drinking water and in developing water quality models that can be used by utilities for the operation of potable water delivery systems. In order to comply with microbial and disinfection byproduct (M/DBP) regulations, water suppliers are continually investing in treatment processes for achieving greater levels of inactivation and DBP precursor removal. As a result of these changes in water quality, maintaining a disinfectant residual in the distribution system can be challenging Bench-scale testing has been used to determine the effect of advanced treatment (enhanced coagulation, granular activated carbon adsorption, ozonation, biofiltration, and ultraviolet irradiation) on chlorine and chloramine decay. Additional studies examine the effects of disinfectant dose, temperature, pH, blending, and rechlorination. The effects of water quality on pipe-wall demand were evaluated using the distribution system simulator at the U.S. Environmental Protection Agency's Test and Evaluation Center. Several models are developed regarding disinfectant decay, making it easier to predict chlorine demand after changes in treatment. The multi-species water quality analysis and network path analysis extensions to EPANET will make the modeling package more robust and will allow utilities to predict chlorine residual at any point in their distribution system with greater confidence.
Book Synopsis Nitrification Modeling in Pilot-scale Chloraminated Drinking Water Distribution Systems by : Jian Yang
Download or read book Nitrification Modeling in Pilot-scale Chloraminated Drinking Water Distribution Systems written by Jian Yang and published by . This book was released on 2005 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Water Age and Disinfection Byproduct Formation in Drinking Water Distribution Systems in East Tennessee by : Seth Adam Fischer
Download or read book Modeling Water Age and Disinfection Byproduct Formation in Drinking Water Distribution Systems in East Tennessee written by Seth Adam Fischer and published by . This book was released on 2015 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chlorine disinfection of drinking waters is responsible for the standard of health we enjoy today and the eradication of waterborne disease. Chlorine also reacts with natural organic matter (NOM) to form disinfection byproducts (DBPs) which have been linked to cancer as well as reproductive and developmental issues. The exact mechanism for formation of regulated DBPs, trihalomethanes (THMs) and haloacetic acids (HAAs), is unknown. The literature has identified relationships between DBP formation and, most notably, characteristics of NOM, chlorine contact time, temperature, pH [negative log of hydrogen ion concentration], and chlorine dose. This study develops models both specific to individual utilities, and general to utilities with surface water sources using NaClO [sodium hypochlorite] for disinfection within the geographic region of East Tennessee. The study utilizes existing data from four utilities collected for compliance with regulations. Calibrated hydraulic models of the four distribution systems are employed to accurately determine water age (chlorine contact time) in the distribution system, often a limitation of field scale models. Multivariate power functions predict THMs and HAAs for individual utilities and across utilities with similar raw water characteristics and treatment processes. R2 [coefficient of determination] ranges from 0.52 to 0.80. Developed models account for actual distribution system conditions, including water age, and predict THM and HAA levels for the four utilities with a higher R2 value than applicable existing lab scale and field scale models. Results arm utilities with strategies to develop specific DBP models using existing data, control DBP levels, improve quality of drinking water, and achieve compliance with regulations.
