Abstract
A Fecal Coliform (FC) management framework is developed incorporating segmentation of river
reaches, hydrodynamic and water quality models and FC management under critical winter low flow
conditions for a highly polluted River Ravi. FC die-off rate in the river is determined from a field
survey of a selected river reach. The travel time calculated with the help of a hydrodynamic model is
0.25 days in the selected reach. FC die-off rate (Kb) was found to be 1.2 day-1
at 20oC. Model
calibration with monitoring data set reveals reasonable agreement of the simulation results with the
measured field values under low flow conditions. Presently, the river is receiving raw wastewater and
the simulation results shows very high fecal coliform levels up to 100x106 MPN/100mL in the river
water. These levels are much higher than the required recreation and irrigation standards.
Simulations are carried out to assess water quality for the future fecal pollution loads in year 2025
and the results reveal that up to 6 log reduction in FC is required at the wastewater outfalls, whereas,
5 log reduction would be sufficient for surface drains to meet desired FC standards under low flow
conditions.
Husnain Haider, Waris Ali. (2011) Fecal Coliform Management Using a Coupled Hydrodynamics and Water Quality Model for the River Ravi in Pakistan, Pakistan Journal of Engineering and Applied Sciences, Volume 9, Issue 1.
-
Views
1990 -
Downloads
151
Previous Article
Article Details
Volume
Issue
Type
Language
