1. 19 December 2015, BIAM Foundation, Dhaka
Water Quality Changes in Balu River during Non-Monsoon and Monsoon Period Period
A. R. Atiq, Muhammad Mizanur Rahaman, Rifat Mahmud Sojib & Subrota Chandra Shil
19 December 2015, BIAM Foundation, Dhaka
Department of Civil Engineering
University of Asia Pacific

2. Contents Introduction Objectives Available data Analysis
Major findings

3. Introduction of Balu River

4. Beel Belai wetland (23°57'53.46N, 90°31'11.58E)

5. Tongi Khal
Google

6. Objectives of this study:
This thesis has three objectives. These are as follows:
To evaluate water quality parameters of Balu River.
To analyze seasonal variations of the water quality parameters.
To compare these parameters with WHO’04, Environment for Europeans (EU’07) and ECR’97 to evaluate water quality of Balu River.

7. All Sampling location of Balu River (GPS Screen shots)
Table 1: Sampling location of Balu River
[ Non-Monsoon (May 2015) and Monsoon (June 2015)]
 All Sampling location of Balu River (GPS Screen shots)
Sampling Point
Time (AM)
GPS Position
Latitude (DDD.DD)
Longitude(DDD.DD) 1
9:43
9:23 ˚N ˚E 2
10:10
9:53 ˚N ˚E 3
10:43
10:31 ˚N ˚E 4
10:53
10:39 ˚N ˚E
Format: DDD.DD→ Degrees (only)
GPS: OsmAnd+ (OSM Automated Navigation Directions): last Update on May 10, 2015.

8. Available data on Balu River

9. Table 2: Concentration of Various Parameters in Balu River (Data Feb, 2005)
Sample ID pH
Turbidity
(NTU)
BOD
(mg/l)
NO3-N
NH3-N
TDS
(mg/100ml) DO
mg/l
Balu-1
8.1 18 22 .7
4.4
34.7
1.9
Balu-2
7.7 72 23
1.5 24
45.6
.18
Khal (u/s)
7.3 55 48 .4
43.6
.25
Norai Khal (d/s) 59 54 .5
24.75 45
.15
Table 3: Minimum oxygen concentration levels measured during the dry season (O2 mg /L)
Year
Balu
1980
1991
1983
1984
1985
1987
1988
Year
Balu
1989
1990
1991
1995
1996
1997/1998 *
2004 +
Source: Environmental Quality Standard (EQS) for Bangladesh; DoE July 1991

10. and analysis Performing lab test Ammonia Test Non-Monsoon Ammonia Test

11. Non-Monsoon
Period

12. Graphical presentation of Fluctuation of different Parameter varies in different location( May 2015)

13. Graphical presentation of Fluctuation of different Parameter varies in different location ( May 2015)

14. Graphical presentation of Fluctuation of different Parameter varies in different location (May 2015)

16. Monsoon
Period

17. Graphical presentation of Fluctuation of different Parameter varies in different location (June 2015)

18. Graphical presentation of Fluctuation of different Parameter varies in different location(June 2015)

19. Graphical presentation of Fluctuation of different Parameter varies in different location (June 2015)

20. Acceptable limit for drinking water European Communities regulation
Table 4: Comparison of Collecting Sample Water versus EU’07, WHO’04 and ECR’1997.
Parameter
Location of sample
Value of parameter
Acceptable limit for drinking water
European Communities regulation
(EU) 2007
WHO standard third edition 2004
The Environment Conservation Rules(ECR) 1997
May 2015
June 2015 PH
Balu 1
7.49
6.94
6-8.5
Balu 2
7.83
6.92
Balu 3
8.02
Balu 4
7.78
6.89
Color of water
(PTCO
Or NTU) 23
104
Acceptable to consumers and no abnormal change
 15 NTU 79 91
216 88
241
115
Turbidity
(NTU)
0.85
14.12
1 NTU
5 NTU
10 NTU
13.41
13.05
43.54
12.78
31.96
20.45

21. Acceptable limit for drinking water May 2015 June 2015
Parameter
Location of sample
Value of parameter
Acceptable limit for drinking water
May 2015
June 2015
European Communities regulation
(EU) 2007
WHO standard third edition 2004
The Environment Conservation Rules(ECR) 1997
Ammonia
(NH3-N)
mg/l
Balu 1
1.41
2.41
0.3m/l
0.2mg/l
0.5 mg/l
Balu 2
4.44
2.61
Balu 3
22.7
2.56
Balu 4 19
2.46
TDS
mg/100ml
101.7
131.2
1500mg/100ml
1000 mg/100ml
121.9
133
188.3
128.0
186.8
128.8
BOD5
2.6
0.6
0 mg/l -
0.9
2.4
1.1 11
1.4 DO
4.45
3.94
4-6 mg/l
6 mg/l or above
3.54
1.90
2.06
2.93
3.64
1.51

22. Analysis and findings

26. Major findings:
Balu River measured DO values were mostly below 6 mg/l, which is not suitable for drinking and domestic uses.
Balu River has significantly high levels of turbidity, which is not suitable for drinking water.
Balu River water is treated in Saidabad Water Treatment Plant (SWTP) that supplies water to Dhaka Metropolitan Area. Turbidity and concentration of BOD5 are relatively high in Balu River water. As a result, the water treatment cost at SWTP also increases.
Balu River water contains higher concentration of ammonia that is unacceptable for drinking water and domestic uses.

27. Major findings: Cont..
Water quality of the Balu River at the upstream intake point of Saidabad water treatment plant is likely to get worse especially in the pre-monsoon period.
From the finding, it is clearly evident that the concentrations of pollutants were higher during dry season particularly in non-monsoon period.
The findings also suggest that present water quality of Balu River is not suitable for drinking and domestic uses, however, in monsoon period water can used as agricultural and industrial purposes.

28. Recommendation:
Treatment and disposal of sewage and industrial effluent;
Efficiently management of the Effluent Treatment Plant (ETP) system by regular monitoring;
Focusing on priority sources of contamination and takes steps for control. Institutional strengthening, coordination and ensure community participation;
Implementation of Environment Conservation Rules (1997) guidelines;
EIA (to run industry or project).

29. Thank you
Department of Civil Engineering
University of Asia Pacific