AWWA IMTECH51379

Computers are widely used by water utilities to model the hydraulic behavior oftheir water distribution networks. Over the last five years, a number of networkmodeling packages have been produced with a facility for modeling chlorine decay.However, modeling chlorine is somewhat more complex than modeling the hydraulicswithin a network because it involves additional complex chemical and biologicalinteractions. Hence there can be considerable difficulties in producing accurateand durable chlorine models. This paper presents an overview of a studyundertaken to develop a cost-effective methodology for producing models of freechlorine with adequate predictive accuracy and satisfactory durability for bothdesign and operational applications. The work was based on distribution networksin the United Kingdom operated by Severn Trent Water Limited. All measurementsand conclusions in this paper relate to free chlorine. The paper addresses threeissues: the mechanisms by which chlorine decays and the implications for chlorinenetwork models; the accuracy, sensitivity and durability of chlorine networkmodels; and potential applications for chlorine models and proposals for methodsby which models can be maintained in a state suitable for their intendedapplication. Includes 8 references.

Product Details

Edition:

Vol. - No.

Published:

01/01/1999

Number of Pages:

21

File Size:

1 file