But experts think a lot more things, including checking other industrial and domestic wastes, need to be done to fully revive the water quality of this important river. They also said the government should now take strong measures to shift the dyeing factories located at Shyampur on the bank of the river to another place as those have become a major threat to it after the ternary relocation with the discharging of high level of concentrated dyes, chemicals, and heavy metals directly into the Buriganga through the hidden pipelines. The tests conducted by the Department of Environment DoE show that the water quality of the river improved as it found the level of average dissolve oxygen DO in its water was 2. Contacted, Prof Ainun Nishat said it appears that the government has made some progress in reducing pollution in the Buriganga as the colour of its water has changed significantly. The water expert said fishermen are getting some fish now in the Buriganga as its water has improved.
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You are on page 1of 8 Search inside document Causes and Remedies of Buriganga River Pollution Dhaka is celebrating its th anniversary as the capital of Bengal proclaimed by the Mughals in the early 17th century. It is a strategic decision by the Mughals considering the economic, navigation and security potentials of the perennial river Buriganga which surrounded parts of Dhaka. Since then the civilisation of Dhaka City has been developed by the bank of the Buriganga River.
The history, livelihood,culture and heritage of Dhaka City have been largely shaped by this small but important river. Four hundred years later the river continues to play a very important role, since according to officials an average of 30, people use the Sadarghat launch terminal,one of the largest river ports in the world,for departure and arrival every day.
But for hundreds of years the Buriganga has been continuously abused by unplanned urbanisation and unsupervised industrialisation. The onslaught of the resultant pollution has virtually killed the Buriganga.
Present Scenario of Buriganga River : Hundreds of years ago, the banks of the Buriganga were a prime location when the Mughals made Dhaka their capital in In the present scenario, the river carries only wastewater during the seven months of the dry season November-May. Even during the wet season no aquatic animal can survive in the dead river water.
Throughout the year, inhabitants near the river and thousands of people who travel through Sadarghat suffer a lot because of the foul smelling water of the Buriganga. Laboratory analysis of the samples shows that presence of dissolved oxygen was between 0. A three-year research finds that some invertebrates and small organisms come to life in these rivers when water flow increases in the rains. But these life forms disappear in the dry season, the researchers add. The Institute of Water Modelling IWM and the World Bank conducted a survey of pollution in Dhaka rivers in that showed there are over various effluent discharge outlets in the capital and Narayanganj.
Of these,19 outlets carry mixed flows of industrial and household waste into the rivers around the capital. Causes Of Buriganga River Pollution : Pollution of Buriganga River began in the Mughal period, since the sewage of the city used to be dumped into the river.
Which is why not a single drop water flows into the river system at that time, informs the hydrologists and engineers of Bangladesh Water Development Board BWDB. During this period of time the system basically carries sewage and industrial effluents. And because of high tide a little water comes from downstream. Population Explosion: It is estimated that world population is doubling every thirty-five years. But in case Of Bangladesh it take twenty- twenty five years.
We know that every additional person add extra pollution. Sadarghat, the most familiar point of buriganga and also in Dhaka. Everyday about 2. Most of them illeterate and do not know how to use river side area properly. They thrown water bottle, paper and other harmful things into the river water. And this way river polluted vastly Encroachment And Land Grabbing: Encroachment, of course, has always been a big threat to rivers eating away the banks and narrowing them further and further.
Over the years, landfills created on the river have narrowed its width at many places near the city. The encroachers have set up platform like structures on the rivers and gradually filled out the bottoms by piling up earth and rubbish. Even multi-storied structures have been built on encroached such high grounds created at the expense of the 3 course of the river with the only effects being more and more narrowing it down.
Politically backed influential land encroachers have created illegal structures including houses, bazaars, ghats port , brickfields etc. Meanwhile, the dumping of wastes into the river system has virtually killed it. According to several studies, each day about cubic metres untreated domestic and human waste are discharged into the Buriganga-Turag system.
Dhaka Wasa has only one sewage treatment plant at Pagla with a capacity of 0. But, because of mismanagement the treatment plant is using one third of its capacity. Most of the industrial units of these areas have no sewerage treatment plants of their own. More than 60, cubic meters of toxic waste including textile dying, printing, washing and pharmaceuticals are released into the main water bodies of Dhaka every day.
On the other hand, appropriate system of removing waste of the river is absent. As a result, the lifted dirt is loaded on the bank of Buriganga instead of throwing it to the dumping stations.
The sun dries up the dirt and wind carries it back to the river. This dirt is the host of many common diseases like diarrhea, cholera etc. Nearly 4. Tannery Waste: There are about leather tanneries in the Hazaribagh district of Dhaka,the capital. Some use modest technology and machinery, but most operate as they did decades ago and release untreated toxic chemical waste near residential areas. The first thing you notice when you walk through the streets of Hazaribagh is the horrible and seemingly allpervasive stench of tanning chemicals.
According to the Department of Environment,the tanneries discharge 22, cubic meters of untreated liquid toxic waste daily into the rivers,gutters and canals that run alongside in the roads of Hazaribagh. Toxins are also leaching into groundwater. The chemicals end up forming coloured ponds and lakes of toxic waste in residential areas and are causing much harm to the 20, people who work and live in the tanning district. Most are suffering from chronic respiratory problems, skin diseases and even destruction of the nasal septum.
Burnt oil dumped into Buriganga: Apart from untreated industrial and household wastes, burnt motor oil and lubricant are also contributing greatly to the pollution of the already moribund river Buriganga. Motor oil traders collect burnt oil from launch operators and refine only to sell those back to them.
In the process of refining the muddy and pitch-black remnants are mindlessly dumped into the river. Around 15 motor oil traders are engaged in refining burnt oil of launches.
Launch operators sell the burnt oil every two to three months. By the time each launch has around 20 litres of burnt oil, said Hafizur Rahman, driver of Sharnadip launch of Dhaka-Shariatpur route. The remains after the refinement of used oil is dumped into the river, said Dulal who once worked with a motor oil refiner.
Not only that, engine boats also release burnt oil into the river thus contributing to the pollution, said Abu Naser Khan, Chairman of Save Environment Movement. Khan said burnt oil from the motorised vehicles is thrown into the drains, which ultimately mingles with the river water around the capital. Burnt oil is highly toxic, he added. Professor Mujibur Rahman of Bangladesh University of Engineering and Technology BUET said any kind of oil pollutes water and increases the level of pollution, which affects the eco-system of the water body.
Remedies of Buriganga rever pollution The Buriganga river is afflicted with multiple pollutions. It is nothing but a crematory. Is there no hope for Buriganga? Fortunately there is. Environmental experts ,water experts and BUET gives some necessary steps to Bangladesh governmet for Buriganga river pollution. These prevention techniques are highlited below.
According to several studies, each day about cubic metres untreated domestic and industrial effluents are discharged into the Buriganga-Turag system. So prevent the buriganga river pollution we should make public awareness and stop population growth of dhaka city.
Increase water flow of Buriganga: Increase flow of the river:During the dry season, the river has a flow of only 50 cubic metre per second cumec. One solution could be to augment the rivers of Dhaka with freshwater from the Jamuna River which has a minimum dry season flow of around cumec.
This will not only improve the water quality of the peripheral rivers of Dhaka but also will benefit water supply, agriculture irrigation, fisheries and navigation.
This is an ideal case of integrated water resources management. Planned Dranage System: Obviously, the existing poor domestic sewage system needs to be improved by installing proper drainage facilities. Besides, using the total capacity of the sewage treatment plant at Pagla, Wasa must install more treatment plants so that a single drop of sewage is not discharged into the river water.
As for the rest of the areas Rajuk, Dhaka City Corporation and the pourashavas must ensure that people use septic tank systems due to absence of sanitary sewer system. At the same time, the government agencies must provide proper facilities for routine sludging of the septic tanks.
BIWTA must force the owners of the vessels and traders on the bank of the river to dump the solid wastes at the fixed places provided by DCC. For any type of construction work within 50 metres of the riverbank, clearance from BIWTA should be mandatory. All structures, especially brickfields within metres from the riverbank should be demolished. River Dredging The government must allocate a budget so that BIWTA can buy sufficient dredgers for routine dredging of the riverbed for smooth navigation.
Move Tannery from Hazaribag: The Ministry of Industries must take initiatives to shift the leather tanneries from Hazaribagh to Hemayetpur, Savar with Common Effluent Treatment Plant CETP facilities, which was supposed to be done in , under the recommendation of a task force on Buriganga formed by the government in In order to improve water quality in Buriganga-Turag system a bill can be passed immediately in the parliament.
When the bill will be passed in the parliament, it will be easier for the government to control strictly the encroachers. At the same time, demolishing the structures within half a mile of opposite of Dhaka City, a beautification programme should be initiated. It will save the river from the encroachment, at the same time people will get place for amusement, which is very important for urban dwellers.
In fact, it should be the top pledges of the parliamentarians from Dhaka constituency to force the government to take steps to save the rivers. References: Internet and Newspaper.
Causes and Remedies of Buriganga River Pollution
A man washes clothes by the river Buriganga in Dhaka May 17, The plight of the Buriganga symbolizes the general state of many rivers in Bangladesh, a large flat land criss-crossed by hundreds of rivers which faces an uphill battle to keep them navigable and their waters safe for human and aquatic lives. But experts say many of them are drying up or are choked because of pollution and encroachment. Unabated encroachment that prevents the free flow of water, dumping of medicinal waste and waste of river passengers have compounded the problem, making the water unusable for humans and livestock.
You are on page 1of 8 Search inside document Causes and Remedies of Buriganga River Pollution Dhaka is celebrating its th anniversary as the capital of Bengal proclaimed by the Mughals in the early 17th century. It is a strategic decision by the Mughals considering the economic, navigation and security potentials of the perennial river Buriganga which surrounded parts of Dhaka. Since then the civilisation of Dhaka City has been developed by the bank of the Buriganga River. The history, livelihood,culture and heritage of Dhaka City have been largely shaped by this small but important river. Four hundred years later the river continues to play a very important role, since according to officials an average of 30, people use the Sadarghat launch terminal,one of the largest river ports in the world,for departure and arrival every day.