Page 76 - Annual Report_21-22

a b c d e

Fig. 3: Some of the significant phytoplankton species encountered in and around Paradip Port (a) Coscinodiscus sp.,
(b) Asterionella glacialis, (c) Gyrodiniumspirales, and some pollution indicating species like (d)Noctiluca scintillans,
and (e) Protoperidinium sp.
Ambient Air Quality Noctiluca scintillans, Protoperidinium sp., Dinophysis
Caudata, Alexandrium catenella and Prorocentrum micans
The PM and PM concentrations varied from 79.24 to species were observed at some of the stations (Fig.3).
2.5
10
537.22 µg/m and 46.92 to 269.59 µg/m during 2021 (Fig. Fishing Harbour(FH) and Approach Channel (AC) stations
3
3
2a &2b). In January (Winter Season), the particulate mat- were highly contaminated with the bacterial population in
ter concentration exceeded the CPCB-NAAQS permissible the month of October-2021(Fig. 2f).
limit at all the monitoring stations.
Sediment Quality
Water Quality
The highest Cr concentration, 197.64 mg/kg, was found
The DO values varied from 3.48 mg/L to 7.89 mg/L, where at GCB (Bulk) in August, and the minimum concentration,
maximum and minimum values were found at ADB (BW) 27.63 mg/kg, was found at IOHB (Bulk) in January (Fig.
in the winter and post monsoon season, respectively 2g). The bacterial count was found maximum in August at
(Fig. 2c). The overall DO values are within the specified South Quay (Fig. 2h).
standard during the study period. PHC value was observed
highest at OJ (SW) during August and minimum at ADB Ambient Noise Quality
(SW) during January (Fig. 2d). Phytoplankton population The noise level was within the prescribed limit inside the
and number of species were found higher during August port stations (Fig. 2i) but exceeded a few stations outside
month in all the stations inside the Port (Fig. 2e). Some the port. However, the noise emitted is not continuous but
major species encountered wereCoscinodicus sp., fluctuating. As per norms, one can hear a noise up to 90
Asterionella glacialis, Gyrodiniumspirales, etc. Pollution dB (A) over a working period of 8 hrs.
indicating phytoplankton species such as pyridinium sp.,

Fig.4: Collection of Air, Water and Sediment Samples Inside and Outside at Paradip Port

74 ANNUAL REPORT 2021-22