This document summarizes a presentation on water pollution in Hatirjheel Project in Dhaka City. The key points are: 1. The sources of water pollution in Hatirjheel include sewage and wastewater entering its canals from surrounding areas instead of just rainwater as intended. Industrial and residential waste are also discharged directly into the project waters. 2. Water quality testing shows several parameters like color, carbon dioxide, and biochemical oxygen demand exceed standards, indicating high levels of pollution. 3. The pollution poses health risks to visitors who swim or bathe in the contaminated waters and can cause skin irritations and waterborne diseases. 4. Solutions proposed include identifying new pollut

1. CE-6312
Water Pollution and its Control
Prepared by Submitted to
Md. Ahsan Habib Dr. Md. Touhid Ur Rahman
Roll No: 1013110001 Professor
Dept. of Civil Engineering, MIST

2. Presentation on
Water pollution in Dhaka City.
(Hatirjheel Project)

3. Hatirjheel Project
Map of Hatirjheel Project

4. Hatirjheel

5. Objectives:
 To identify the causes and sources of water
pollution of Hatirjheel.
 To know the States of water pollution .
 To know impacts of water pollution .
 To find out a way to mitigate the water pollution
of Hatirjheel.

6. Causes
# “according to plan only rain water to get through
the project areas. But, instead, waste water from
different adjoining areas are released in the
Hatirjheel canals and mixed with the rain water
and made it difficult to keep the water clean., the
water in the lake is being polluted with sewage.”
Dean of BUETArchitecture Department Prof. Dr. Mujibar Rahman told Ittefaq (11.03.2014)
# Most of the visitors do not apply civic sense when
they go to the project area.They carry with them
soft drinks bottles, polythene filled with ground
nut, biscuits and newspaper and leave those
there after use. Since those are not removed,
environment gets polluted.

7. Causes

8. Causes

9. Source of pollution
 The main source of potential pollution is sewer line.
 Different location’s sewerage were disposed in this project by
sewer line.
 The industrial waste water i,e chemical, color, toxic water
comes from Garments, Automobile factories, treatment plants
e.t.c were directly disposed on this project.
 The residential waste like human excreta, grey water, e.tc were
disposed into the water in different location of the project by
pit.

10. Sources

11. Sources

12. Sources

13. Present Status of water
 Source: INTERNATIONALJOURNAL OFTECHNOLOGY ENHANCEMENTSAND EMERGING ENGINEERING RESEARCH,
VOL 2, ISSUE 6 98 ISSN 2347-4289 (Copyright © 2014 IJTEEE).
 By testing existing water we have pH value 6.9 to 7.1 where as ECR.97
standard range is 6.5 to 8.5 so the pH is 100% satisfied.
 By testing existing water we have color value 25 to 50 pt-Co unit where
as ECR.97 standard range is 15 pt-Co unit so the color is so high.
 By testing existing water we haveTurbidity value 11 to 13 NTU where as
ECR.97 standard range is 10 NTU so the turbidity value is nearly the
standard.
 By testing existing water we have carbon oxide value 35 to 60 mg/l
where as ECR.97 standard range is 4 mg/l so the carbon dioxide value is
very high.

14. Present Status of water
 By testing existing water we have iron value .15 to .25 mg/l where
as ECR.97 standard range is 1mg/l so the iron value is very low.
 By testing existing water we have BOD value 0 to 10 mg/l where
as ECR.97 standard range is 0.2 mg/l so the BOD value is so high.
 By testing existing water we have COD value 280 to 600 mg/l
where as ECR.97 standard range is 200 to 500 mg/l so the COD
value nearly standard.
 By testing existing water we have alkalinity value 90 to 345 mg/l
as CaCO3 where as ECR.97 standard range is 600 mg/l as CaCO3
so the alkalinity value is very low.
 By testing existing water we have hardness value 150 to 300 mg/l
as CaCO3 where as ECR.97 standard range is 500 mg/l as CaCO3
so the hardness value is very low.

15. States of pollution

16. States of pollution

17. States of pollution

18. States of pollution

19. Importance of the Project
 This Project is very important to accumulating
rainwater, for preventing flood, reducing the
rate of impure water .
 Very good place to visit this project for the
visitors.

20. Visitors of the project

21. Impacts on public health
 Some people were bathing and swimming on the waste
water, This people are falling into different types of
water borne diseases.
 For change in water color and odor, some pollutants
may also be harmful to human health.
 When chlorine levels are too low, these often turn the
water a green color and it is very dangerous for human
health.
 In Hatirjheel project water mixed with chemical, toxic
water, black algae, e.tc these causes adverse effects to
human health such as skin irritations.

22. Discussion
The water quality of Hatirjheel Lake and find that water of Hatirjheel
Lake can be reused if proper treatment plant establish and prevent
the contamination source surrounding the water body. Routine
research work with wide public awareness, government participation
and government regulations can save the water of Dhaka met-
ropolitan city and thus a safe and sound water environment can be
made for future generations.

23. Remedial measure
 Identifying new toxic substances, and implementing
pollution prevention and control strategies.
 Preventing and controlling harmful discharge.
 Necessity of reusing of surface water for sustaina-
ble development.
 Preventing environmental threats before they turn
into actual problems.
 Developing water quality and ecosystem health ob-
jectives.
 Increased awareness of the importance of
freshwater resources.

24. THANKS TO ALL