This powerpoint presentation begins by presenting study objectives that include the following: develop a dynamic model to predict
distribution system chlorine residual;
optimize distribution system chlorine residual;
minimize distribution system TTHM level; and,
save chemical costs. A brief overview of the Las Vegas Valley Water District (LVVWD) supply and distribution system, and distributed rechlorination system is presented, along with system challenges that include the following: complex distributed chlorination; various convection, dispersion and
blending in the distribution system
network; and,
complicated chlorine reaction with
different materials, chemicals and
deposits. Approach methodology included the following:
utilize supervisory control and data acquisition (SCADA) information and Laboratory
Information Management System (LIMS) data; simplify chlorine model by grouping reaction
constants; calibrate chlorine model using field tests
coupled with a Genetic Algorithm (GA)
optimization; and,
continue model calibration accounting
operation changes or system expansion. Potential benefits include:
improved understanding of water quality
variations in a complex water distribution
system;
ensured adequate residual chlorine
throughout the system;
saved chemical costs by optimizing
chlorine dose; and, minimized TTHM growth by tracking and
reducing bulk chlorine demand through
daily operations. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.1 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 26 |
| Published : | 11/01/2008 |
