Chairman: Prof. D. P. Giridhar & Dr. T. V. Ramachandra
Water quality analysis in rivers
has been considered important in our country during the recent years. The
deterioration of the river water quality is due to pollution from different
activities related to economic development. In order to maintain desirable
levels of water quality parameters related to river, th0e probable impact of
pollutant loads on river ecosystem has to be analysed.
studies related to this have been conducted and analysed. One important
parameter is the natural decay of bacteria in the river Cauvery under different
flow regimes due to the release of domestic waste and due to bathing activities.
study area is river Cauvery located near Srirangapatna town, which is 15 km away
from Mysore city. The study segment in the river is between Wellesley road
bridge and Nimishamba temple, which is 1.6 km apart. The untreated wastewater
outlet of Srirangapatna town is just located below the bridge. The study segment
has been divided into 8 study tangents located 15m, 35m, 50m, 150m, 47m, 825m,
1150m and 1550 m downstream from outfall. In addition to the above, one more
sampling station has been selected just upstream of the water of the outfall to
know the background river water quality. The survey was conducted on the 4th,
9th and 18th February 2000. The river flow rate, sewage
flow rate and river water quality was monitored.
the data analysis modelling studies, the available computer programmes MIXANDT
and MIXCALBN were used to analyse the data collected from the field survey.
MIXCALBN model is the water quality prediction model and is applicable to mixing
zone below a pipe outfall.
the modelling studies it was observed that at a high flow and high temperature
conditions the decay was slower and consequently the bacterial concentration was
not equal to background concentration at 1.6 km from the outfall in the latter
Address: Department of Environmental Engineering,
Sri Jayachamarajendra College of Engineering, Mysore-570 006, Karnataka, India
Phone: 0821 341753 E-mail: email@example.com