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Optimisation of Corrosion Control for Lead in Drinking Water Using Computational Modelling Techniques (Metals and Related Substances in Drinking Water Research Rep)

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en Limba Engleză Paperback – 20 Dec 2012
In many respects, lead in drinking water has become a forgotten problem, since the mid 1980s when a range of environmental controls were implemented to reduce exposure to lead. This is largely because the sampling protocols, that underpin regulatory controls, are mostly inadequate and have tended to under-estimate the amount of lead that can be present in drinking water (IWA, 2010).Optimisation of Corrosion Control for Lead in Drinking Water Using Computational Modelling Techniques shows how compliance modelling has been used to very good effect in the optimisation of plumbosolvency control in the United Kingdom, particularly in the optimisation of orthophosphate dosing. Over 100 water supply systems have been modelled, involving 30% of the UK's water companies. This "proof-of-concept" project has the overall objective of demonstrating that these modelling techniques could also be applicable to the circumstances of Canada and the United States, via three case studies.This report is the first in the Research Report Series that is being published by the IWA Specialist Group on Metals and Related Substances in Drinking Water.
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Specificații

ISBN-13: 9781780404783
ISBN-10: 1780404786
Pagini: 80
Dimensiuni: 216 x 279 x 4 mm
Greutate: 0.2 kg
Editura: IWA Publishing (Intl Water Assoc)
Seria Metals and Related Substances in Drinking Water Research Rep


Cuprins

Introduction; Corrective water treatment for reducing lead in drinking water; Regulatory background in the United States and the need for further optimisation of plumbosolvency control; Regulatory background in Canada and the need for further optimisation of plumbosolvency control; Optimisation of plumbosolvency control in the United Kingdom and the use of computational modelling techniques; Project outline, objectives and benefits; Description of the computational compliance models; Introduction; The single pipe model; The zonal modelling framework; Simulating sampling; Simulation of water flow in a pipe using computational fluid dynamics; Introduction; The fluid flow equations and their computational solution; Comparison of plug and laminar flow along a straight pipe; Application of volumetric profiles; Calibration and validation; Calibration; Validation; Case study: City A (US); Case study: City B (CA); Case study: City C (US); Investigations into sequential sampling; Sequential sampling surveys in Cities A, B and C; Modelling zonal compliance; Using Reynold's Number; Modelling sequential sampling at a single house; Discussion; The use of modelling in the optimisation of plumbosolvency control; Regulatory aspects; Operational aspects; Risk assessment; The way forward; Conclusions; Calibration data; Examples of model output