International Journal of Marine Science, 2017, Vol.7, No.16, 141-160
143
Continued Table 1
Sample id
Color
Odor
Tem.
(
°
C)
TSS
(mg/L)
TDS
(mg/L)
TS
(mg/L)
Turb
(FTU)
DO
(mg/L)
pH EC
(µs/cm)
BOD
(mg/L)
COD
(mg/L)
Salinity
(mg/L)
Chaktai New
Bridge
Muddy Pungent 22
480
510
1120
40.50 2.10
6.7 1080
290
635
0.40
Karnafully
River in front
of Chaktai
Khal
Turbid
color
High
pungent
22.5 190
421
695
16.20 0.35
6.6 820
397
865
0.40
Chaktai Khal
(Chawkbazar)
Turbid
color
High
pungent
23
120
292
472
14.00 0.65
6.6 552
198
510
1.50
Firingibazar
Khal (at outfall
to Karnafully
River)
Light
green
High
pungent
24
230
999
1320
19.71 0.40
6.4 1806
370
755
5.20
Firingibazar
Khal
(Upstream)
Oily &
Black
High
pungent
24.5 380
6920
7441
23.33 1.50
6.2 11570
285
623
5.10
Monohar Khal
(Low tide
starting, east of
Sadarghat)
Turbid
color
Odorless
24
175
910
1167
18.45 0.10
6.4 1712
273
600
1.40
Monohar Khal
(at outfall to
Karnafully
River)
Nearly
colorless
Odorless 24
305
7510
7932
22.00 1.20
6.5 12880 243
590
5.10
Mazhirghat
(Main drain)
Light
green
Shortly
pungent
23.5 210
3500
3910
19.50 4.5-8
6.4 6190
310
743
2.70
Mazhirghat
(Outfall to
Karnafully
River)
Turbid
color
Shortly
pungent
23.5 275
6300
6685
26.10
6.5 10450 255
695
4.70
At the waste disposal area, DO varied between (3.3-6.2) mg/L, BOD (1.83-4.82) mg/L and pH (6.3-7.8) (Hossain
et al., 1988). Islam et al. (2015) recorded the mean concentrations of pH (7.1-8.5), DO (0.1-0.55 mg/L), TA
(47.6-65.9 mg/L), TDS (631.8-653.6 mg/L), TSS (280-300.3 mg/L), SO
4
-S (1-2.3 mg/L), NH
3
(0.6-1.1 mg/L),
NO
3
-N (0.2-0.3 mg/L) and PO
4
-P (0.1-0.5 mg/L).
Ahmed
et al. (
2010) also studied on the Karnafully river water
quality (Table 2).
Table 2 Water quality of the Karnafully River
Parameters
WHO Standard
Present Study
Previous Study
Ambient temp (°C)
-
18.25-35.00
ND
Water temp (°C)
-
19.50-34.30
ND
pH
NYS
6.36-9.86
7.01-8.24
EC (S/cm)
800-1000
90.00-45600.00
100-26150
TDS (mg/L)
--
45.00-20000.00
ND
TSS (mg/L)
--
14.40-5100.00
ND
TS (mgL
-1
)
--
46.00-27700.00
ND
DO (mg/L)
4-6
0.00-7.91
3.20-7.20
Transparency (cm)
--
1.50-150.00
ND
Acidity (mg/L)
--
1.60-52.25
ND
CO
2
(mg/L)
6
1.41-49.98
ND
P.alkalinity (mg/L)
--
0.00
ND
