Authors : Mane S.H., Kamble B.S. and Girhe B.E.
Page Nos : 107-110
Description :
Microbiological assessment and physic
-
chemical
parameters of Nira River were carried out
during dry and wet season to determine whether the discharges are within tolerable limits. All the
physico
-
chemical parameters studied showed seasonal variations. Higher temperature and lower p
H
values were values
were recorded during the dry season than wet season. Similarly, the BOD of fresh
water, the lotic water decreases from 10000 mg/ml during the dry season to 6000 mg/ml in the wet
season. Conversely, the BOD of the final waste discharge was 4000 mg/ml du
ring dry season and 3.500
mg/ml during the wet season. The COD showed similar trend, with values ranges from 12.200 to 18.500
mg/ml depending on the season. The suspended solid values ranged from 1200 to 1950 mg/ml. The
phosphate and nitrate ions were
in the range of 41
-
75 mg/ml. and 22.5
-
960 mg/ml respectively.
The
following bacteria species were also encountered:
B. cereus, E. coli, Micrococcus sp, S.typhi. The results showed significantly high level of pollutants in the
waste discharged in Nira Rive
r.
