際際滷

際際滷Share a Scribd company logo

causes,impacts,effects,solution of water pollution of Dhanmondi Lake

T
Taz Hasan

a questionnaire survey on 81 peoples of different classes.our objective is to know peoples opinion or thoughts on causes,effects,impacts,solution of water pollution of Dhanmondi Lake.

1 of 17
Downloaded 20 times
A REPORT ON CAUSES,EFFECTS,IMPACTS AND SOLUTION OF WATER POLLUTION OF DHANMONDI LAKE,DHAKA (based on peoples opinion) SUBMITTED BY : MD. TAZ HASAN(B-140602074) DEPT. OF GEOGRAPHY AND ENVIRONMENT JAGANNATH UNIVERSITY, DHAKA. SUBMITTED TO, NAJMUN NAHAR ASSISTANT PROFESSOR DEPT. OF GEOGRAPHY AND ENVIRONMENT, JAGANNATH UNIVERSITY DHAKA.
1 | P a g e ABSTRACT Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is H2O, meaning that each of its molecules contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds. On the December,2017 we went with our batch fellows and Najmun Nahar mam to Dhanmondi Lake to analyze the quality of water by receiving peoples opinion on the causes,effects,impacts and the solution. We receive their data and analyze it to make a good result which will be helpful to maintain the quality of water and to concern the authority and local people.
2 | P a g e Table of Contents Introduction a) Objective b) Report Synopsis Literature Review a) Introduction b) Previous Studies Methodology Result and Discussion a) Data Table b) Discussion on Data Table Conclusion and Recommendation References
3 | P a g e
4 | P a g e Objectives : 1.To present the level of water pollution in Dhanmondi Lake. 2.To analyze the causes, sources and impacts in the study area . 3.Finally to set mitigation and recommendation. Report Synopsis : In Introduction we discuss about our objectives and methodology of the report. In Literature review we discuss about the description and the previous studies on Dhanmondi Lake. In Result and discussion we show the data collected from the people in dhanmondi lake and discuss about them In Conclusion we will give our references and recommendation for improve the present situation.
5 | P a g e Literature Review
6 | P a g e General Location : Dhaka Coordinate : 23属43'N latitude and 90属26'E longitude Dhanmondi Lake is a lake located in the Dhanmondi residential area in Dhaka,Bangladesh.The lake was originally a dead channel of the Karwan Bazar River, and was connected to the Turag River.The lake is partially connected with the Begunbari Canal. In 1956, Dhanmondi was developed as a residential area. In the development plan, Dhanmondi residential area was developed in 1956 with 240.74 ha of land including the lake. about 16% of the total area of Dhanmondi was designated for the lake. It is 3 km in length, 35-100m in width, with a maximum depth of 4.77m and the total area of the water body is 37.37 ha. There is one box culvert in the lake near Sukrabad area, which is the only outlet of the lake. Excess floodwater due to heavy rainfall passes through this outlet. So water level in the lake remains almost the same in all Seasons. The lake is under the management of several authorities looking after its various aspects. The Ministry of Works has its ownership; the Fisheries Department looks after fishery development; the Dhaka City Corporation,being the principal civic body, exercises some responsibility in its improvement. The Department of Environment (DOE) looks after the aspects of proper Environment and protection of aquatic resources of the lake. Fig : Different Sights of Dhanmondi Lake
7 | P a g e Fig : Dhanmondi Lake Map
8 | P a g e Previous Studies : In 2013 A report submitted by Tapon Chakrabarti(Site Engineer at Apex Properties Development Limited) anmed Dhanmondi lake water Pollution source investigation Report-2013Where he said that The lake is being polluted through all the way of pollution except industrial man made pollution & natural acid rain, Silt discharge from river & leachate from animal excreta . So its very necessary to check the current rate of pollution, otherwise it would be able to take a place in history. In a report of Ahmed Kabir on Dhanmondi lake contaminated by mysterious toxic waste DoE s Senior Chemist, Syed Ahmed Kabir said There is no doubt the toxic wastewater is entering this part of the lake but nobody is sure where it comes from, A project held by dept. of zoology,Dhaka University(Prod. Dr. M. Niamul Naaser) where it said that the Quality of Dhanmondi lake water is maintained local community by blocking pollution sources.Ecologically the presence of fresh water mussels continuous filtering of water Dhanmondi Lake keeps the water clean.
9 | P a g e Methodology : To achieve the above objectives the following methodologies were taken a. Field visit to see the situation of the site. b. Collect the opinion from the local people and the visitors of dhanmondi lake. c. Overview the whole data. Data and information are collected from both primary and secondary sources. We analyze our data table and identify the problems, suggest some recommendation for mitigate those problems and finally preparing the report.
10 | P a g e Result and Discussion
11 | P a g e Data Table : Overview of the water pollution of Dhanmondi Lake Data Collects from : Gender Total Percentage Male 70 87.65 Female 11 12.35 Age Group Total Percentage Below 20 5 6.17 20-29 35 43.21 30-39 22 27.16 Above 40 19 23.46 Educational Status Total Percentage Illiterate 2 2.47 Primary 4 4.94 Secondary 29 35.80 Tertiary(Higher) 46 56.79 Occupation Total Percentage Student 26 32.10 Govt. 9 11.11 Private 21 25.92 Others 25 30.86 Sources of Pollution Total Percentage Leaves 53 65.43 Wastes 42 51.85 Polythene 55 67.90 Bottle & Plastic materials 31 38.27
12 | P a g e Paper 10 12.34 Cigarette 17 20.98 Effects Of Pollution Total Percentage Water Unsuitable for use 53 65.43 Nuisance of mosquitos 16 19.75 Bad smell 43 53.08 Unsuitable for aquatic life 28 34.57 Increased of toxic chemicals 10 12.34 Damage the beauty of Lake 20 24.69 Increased of bacteria 11 13.58 Reduce Birds & Plants 8 9.87 Air Pollution 24 29.62 Harmful for health 27 33.33 Causes Total Percentage Throwing of waste material 33 40.74 Use of paper 19 23.45 Falling leaves 47 58.02 Sanitation/ Drainage system 43 53.08 Uses of Polythene 63 77.77 Household waste 14 17.28 Food Waste 28 34.56 Dumping of waste 37 45,68 Static condition of water 13 16.04 Solution Total Percentage Public Awareness 71 87.65 Concern of lake guard 62 76.54 Proper Govt. law 48 59.25 Implant trees 31 38.27 Regular cleaning of water 34 41.97 Maintain the lake in systematic ways 30 37.03 Increase the number of dustbin 26 32.09 Changing the sewerage line from lake 17 20.99 Preventing harmful discharge 14 17.28 Controlling surface run-off 12 14.81
13 | P a g e Discussion on Data Table Sources of pollution : If we look at the data table we can see that the majority of the people say that falling leaves is a major cause of water pollution. In general it a common facts and its natural and not harmful for the water if excessive deposit of leaves dont occur. Most of the people also told us waste deposit, polythene, bottle materials,papers, cigarette are also the sources of pollution in Dhanmondi Lake water. Effects of pollution: In the effects of pollution majority of the people told us that the water of Dhanmondi lake is unsuitable for us.Other side majority of the people also said that by increasing mosquitoes is also a effects of water pollution in that area. Bad smell is also a effects of water pollution in Dhanmondi Lake area. But in my eyes I could not find bad smell at all.I think there are some specific places for bad smell mainly where the waste material thrown . Increased of toxic chemical is also a effects of water pollution came to our data sheet.which can be identify by testing the water sample in lab. People say that water pollution makes the aquatic life unsuitable. But we see fishes in the lake,because of the size of the lake and the water it holds,it doesnt hamper the aquatic life in broad .but in future if the water pollution continue ,it can be a cause of threat for aquatic life.People also say that birds and animals are also reducing because of water pollution . Solution : So what can be the solution of the water pollution problem of dhanmondi lake . I will discuss them by public opinion . The majority of the people think that public awareness can solve the matter.beside this the guards who are appointed in Dhanmondi Lake ,they have play a vital role in this,they should keep their eyes to keep the law and rules in Dhanmondi Lake .Implant tress are also come in public opinion. Preventing harmful discharge and Controlling surface run-off is also solutions for reducing water pollution in Dhanmondi Lake .
14 | P a g e Conclusion and Recommendation Actually for maintaining ecological balance of Dhanmondi lake along with its natural view we have to stop the external and internal pollution. It plays a vital role in Dhaka city as the city has over 14 million(2013) but hasnt sufficient number of water contents like lakes ,rivers, canals . So finally we can say if we can aware people on throwing waste material,apply proper law on the area the mitigation of pollution on Dhanmondi lake can be seen. In the other hand pollution level of the water can be decrease by cultivating filter feeder fishes, regular cleaning of water, maintaining the water level .
15 | P a g e References 1.Tapon, C. ,(2013). Investigation of pollutant sources of Dhanmondi lake,Dhaka Retrieved from http:// www.slideshare.net/taponck/dhanmondi-lake-water-pollution-source- investigation-report2013?from_action=save 2.Hossain, M.Z. , Kabir, A.H., & Quraishi S.B. ,(2010). CONTAMINATION OF DHANMONDI AND GULSHAN LAKE WATERS WITH SOME METALS AND INORGANIC POLLUTANTS. Journal of Bangladesh Academy of Sciences, Vol. 34, No. 1, 89- 93 3.Khan, M.A.,(2016). Dhanmondi lake contaminated by mysterious toxic waste,Dhaka Retrieved from http:// www.reportsbd.com/dhanmondi-lake-contaminated-by-mysterious-toxic- waste/ 4.PIU-BARC NATP: Phase-1 and dept. of Zoology,Dhaka University.(2016). Assessment of Aquatic Pollution and Biodiversity of Some Lakes of Dhaka City.Dhaka Retrieved from http:// archive.barcapps.gov.bd/uploads/Documents_11___1453265531.pdf
16 | P a g e

More Related Content

causes,impacts,effects,solution of water pollution of Dhanmondi Lake

  • 1. A REPORT ON CAUSES,EFFECTS,IMPACTS AND SOLUTION OF WATER POLLUTION OF DHANMONDI LAKE,DHAKA (based on peoples opinion) SUBMITTED BY : MD. TAZ HASAN(B-140602074) DEPT. OF GEOGRAPHY AND ENVIRONMENT JAGANNATH UNIVERSITY, DHAKA. SUBMITTED TO, NAJMUN NAHAR ASSISTANT PROFESSOR DEPT. OF GEOGRAPHY AND ENVIRONMENT, JAGANNATH UNIVERSITY DHAKA.
  • 2. 1 | P a g e ABSTRACT Water is a transparent and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms. Its chemical formula is H2O, meaning that each of its molecules contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds. On the December,2017 we went with our batch fellows and Najmun Nahar mam to Dhanmondi Lake to analyze the quality of water by receiving peoples opinion on the causes,effects,impacts and the solution. We receive their data and analyze it to make a good result which will be helpful to maintain the quality of water and to concern the authority and local people.
  • 3. 2 | P a g e Table of Contents Introduction a) Objective b) Report Synopsis Literature Review a) Introduction b) Previous Studies Methodology Result and Discussion a) Data Table b) Discussion on Data Table Conclusion and Recommendation References
  • 4. 3 | P a g e
  • 5. 4 | P a g e Objectives : 1.To present the level of water pollution in Dhanmondi Lake. 2.To analyze the causes, sources and impacts in the study area . 3.Finally to set mitigation and recommendation. Report Synopsis : In Introduction we discuss about our objectives and methodology of the report. In Literature review we discuss about the description and the previous studies on Dhanmondi Lake. In Result and discussion we show the data collected from the people in dhanmondi lake and discuss about them In Conclusion we will give our references and recommendation for improve the present situation.
  • 6. 5 | P a g e Literature Review
  • 7. 6 | P a g e General Location : Dhaka Coordinate : 23属43'N latitude and 90属26'E longitude Dhanmondi Lake is a lake located in the Dhanmondi residential area in Dhaka,Bangladesh.The lake was originally a dead channel of the Karwan Bazar River, and was connected to the Turag River.The lake is partially connected with the Begunbari Canal. In 1956, Dhanmondi was developed as a residential area. In the development plan, Dhanmondi residential area was developed in 1956 with 240.74 ha of land including the lake. about 16% of the total area of Dhanmondi was designated for the lake. It is 3 km in length, 35-100m in width, with a maximum depth of 4.77m and the total area of the water body is 37.37 ha. There is one box culvert in the lake near Sukrabad area, which is the only outlet of the lake. Excess floodwater due to heavy rainfall passes through this outlet. So water level in the lake remains almost the same in all Seasons. The lake is under the management of several authorities looking after its various aspects. The Ministry of Works has its ownership; the Fisheries Department looks after fishery development; the Dhaka City Corporation,being the principal civic body, exercises some responsibility in its improvement. The Department of Environment (DOE) looks after the aspects of proper Environment and protection of aquatic resources of the lake. Fig : Different Sights of Dhanmondi Lake
  • 8. 7 | P a g e Fig : Dhanmondi Lake Map
  • 9. 8 | P a g e Previous Studies : In 2013 A report submitted by Tapon Chakrabarti(Site Engineer at Apex Properties Development Limited) anmed Dhanmondi lake water Pollution source investigation Report-2013Where he said that The lake is being polluted through all the way of pollution except industrial man made pollution & natural acid rain, Silt discharge from river & leachate from animal excreta . So its very necessary to check the current rate of pollution, otherwise it would be able to take a place in history. In a report of Ahmed Kabir on Dhanmondi lake contaminated by mysterious toxic waste DoE s Senior Chemist, Syed Ahmed Kabir said There is no doubt the toxic wastewater is entering this part of the lake but nobody is sure where it comes from, A project held by dept. of zoology,Dhaka University(Prod. Dr. M. Niamul Naaser) where it said that the Quality of Dhanmondi lake water is maintained local community by blocking pollution sources.Ecologically the presence of fresh water mussels continuous filtering of water Dhanmondi Lake keeps the water clean.
  • 10. 9 | P a g e Methodology : To achieve the above objectives the following methodologies were taken a. Field visit to see the situation of the site. b. Collect the opinion from the local people and the visitors of dhanmondi lake. c. Overview the whole data. Data and information are collected from both primary and secondary sources. We analyze our data table and identify the problems, suggest some recommendation for mitigate those problems and finally preparing the report.
  • 11. 10 | P a g e Result and Discussion
  • 12. 11 | P a g e Data Table : Overview of the water pollution of Dhanmondi Lake Data Collects from : Gender Total Percentage Male 70 87.65 Female 11 12.35 Age Group Total Percentage Below 20 5 6.17 20-29 35 43.21 30-39 22 27.16 Above 40 19 23.46 Educational Status Total Percentage Illiterate 2 2.47 Primary 4 4.94 Secondary 29 35.80 Tertiary(Higher) 46 56.79 Occupation Total Percentage Student 26 32.10 Govt. 9 11.11 Private 21 25.92 Others 25 30.86 Sources of Pollution Total Percentage Leaves 53 65.43 Wastes 42 51.85 Polythene 55 67.90 Bottle & Plastic materials 31 38.27
  • 13. 12 | P a g e Paper 10 12.34 Cigarette 17 20.98 Effects Of Pollution Total Percentage Water Unsuitable for use 53 65.43 Nuisance of mosquitos 16 19.75 Bad smell 43 53.08 Unsuitable for aquatic life 28 34.57 Increased of toxic chemicals 10 12.34 Damage the beauty of Lake 20 24.69 Increased of bacteria 11 13.58 Reduce Birds & Plants 8 9.87 Air Pollution 24 29.62 Harmful for health 27 33.33 Causes Total Percentage Throwing of waste material 33 40.74 Use of paper 19 23.45 Falling leaves 47 58.02 Sanitation/ Drainage system 43 53.08 Uses of Polythene 63 77.77 Household waste 14 17.28 Food Waste 28 34.56 Dumping of waste 37 45,68 Static condition of water 13 16.04 Solution Total Percentage Public Awareness 71 87.65 Concern of lake guard 62 76.54 Proper Govt. law 48 59.25 Implant trees 31 38.27 Regular cleaning of water 34 41.97 Maintain the lake in systematic ways 30 37.03 Increase the number of dustbin 26 32.09 Changing the sewerage line from lake 17 20.99 Preventing harmful discharge 14 17.28 Controlling surface run-off 12 14.81
  • 14. 13 | P a g e Discussion on Data Table Sources of pollution : If we look at the data table we can see that the majority of the people say that falling leaves is a major cause of water pollution. In general it a common facts and its natural and not harmful for the water if excessive deposit of leaves dont occur. Most of the people also told us waste deposit, polythene, bottle materials,papers, cigarette are also the sources of pollution in Dhanmondi Lake water. Effects of pollution: In the effects of pollution majority of the people told us that the water of Dhanmondi lake is unsuitable for us.Other side majority of the people also said that by increasing mosquitoes is also a effects of water pollution in that area. Bad smell is also a effects of water pollution in Dhanmondi Lake area. But in my eyes I could not find bad smell at all.I think there are some specific places for bad smell mainly where the waste material thrown . Increased of toxic chemical is also a effects of water pollution came to our data sheet.which can be identify by testing the water sample in lab. People say that water pollution makes the aquatic life unsuitable. But we see fishes in the lake,because of the size of the lake and the water it holds,it doesnt hamper the aquatic life in broad .but in future if the water pollution continue ,it can be a cause of threat for aquatic life.People also say that birds and animals are also reducing because of water pollution . Solution : So what can be the solution of the water pollution problem of dhanmondi lake . I will discuss them by public opinion . The majority of the people think that public awareness can solve the matter.beside this the guards who are appointed in Dhanmondi Lake ,they have play a vital role in this,they should keep their eyes to keep the law and rules in Dhanmondi Lake .Implant tress are also come in public opinion. Preventing harmful discharge and Controlling surface run-off is also solutions for reducing water pollution in Dhanmondi Lake .
  • 15. 14 | P a g e Conclusion and Recommendation Actually for maintaining ecological balance of Dhanmondi lake along with its natural view we have to stop the external and internal pollution. It plays a vital role in Dhaka city as the city has over 14 million(2013) but hasnt sufficient number of water contents like lakes ,rivers, canals . So finally we can say if we can aware people on throwing waste material,apply proper law on the area the mitigation of pollution on Dhanmondi lake can be seen. In the other hand pollution level of the water can be decrease by cultivating filter feeder fishes, regular cleaning of water, maintaining the water level .
  • 16. 15 | P a g e References 1.Tapon, C. ,(2013). Investigation of pollutant sources of Dhanmondi lake,Dhaka Retrieved from http:// www.slideshare.net/taponck/dhanmondi-lake-water-pollution-source- investigation-report2013?from_action=save 2.Hossain, M.Z. , Kabir, A.H., & Quraishi S.B. ,(2010). CONTAMINATION OF DHANMONDI AND GULSHAN LAKE WATERS WITH SOME METALS AND INORGANIC POLLUTANTS. Journal of Bangladesh Academy of Sciences, Vol. 34, No. 1, 89- 93 3.Khan, M.A.,(2016). Dhanmondi lake contaminated by mysterious toxic waste,Dhaka Retrieved from http:// www.reportsbd.com/dhanmondi-lake-contaminated-by-mysterious-toxic- waste/ 4.PIU-BARC NATP: Phase-1 and dept. of Zoology,Dhaka University.(2016). Assessment of Aquatic Pollution and Biodiversity of Some Lakes of Dhaka City.Dhaka Retrieved from http:// archive.barcapps.gov.bd/uploads/Documents_11___1453265531.pdf
  • 17. 16 | P a g e