Computers are widely used by water utilities to model the hydraulic behavior of
their water distribution networks. Over the last five years, a number of network
modeling packages have been produced with a facility for modeling chlorine decay.
However, modeling chlorine is somewhat more complex than modeling the hydraulics
within a network because it involves additional complex chemical and biological
interactions. Hence there can be considerable difficulties in producing accurate
and durable chlorine models. This paper presents an overview of a study
undertaken to develop a cost-effective methodology for producing models of free
chlorine with adequate predictive accuracy and satisfactory durability for both
design and operational applications. The work was based on distribution networks
in the United Kingdom operated by Severn Trent Water Limited. All measurements
and conclusions in this paper relate to free chlorine. The paper addresses three
issues: the mechanisms by which chlorine decays and the implications for chlorine
network models; the accuracy, sensitivity and durability of chlorine network
models; and potential applications for chlorine models and proposals for methods
by which models can be maintained in a state suitable for their intended
application. Includes 8 references.
| Edition : | Vol. - No. |
| Number of Pages : | 21 |
| Published : | 01/01/1999 |
