Added to this pollution, fecal pollution is by far the most serious water contamination problem, while water and air pollution is causing increasing concern in the rapidly growing urban areas. More than rivers of Bangladesh directly or indirectly receive a large quantity of untreated industrial wastes and effluent.
We are habituated with this but are really having hard times due to the mosquitoes," boatman Bazlu Mia said. The most common sources of human-induced groundwater contamination can be grouped into four categories: It will help recharging and at the same time can be used for surface water source.
But in just two decades indiscriminate discharge of human excreta, household garbage and industrial waste, mainly liquid waste of dyeing and tannery industries, left the rivers dead. Water pollution percentage of most five industrial sectors of Bangladesh in the year is shown below: Such change in the hydrodynamic condition can make the aquifer vulnerable to possible groundwater contamination, and also impede groundwater supply by tube wells.
In nature, arsenic bearing minerals undergo oxidation and release arsenic to water. Point sources are localized in areas of an acre or less, whereas Nippon sources are dispersed over broad areas.
The air pollution percentage of most five industrial sectors of Bangladesh in the year is shown below: The potential of these tanks to leak increases with age. In such case, any potential groundwater contamination by hydrocarbons may contaminate groundwater in the central portion of Dhaka city as it is evident that the groundwater in this city moves towards the city center, where high groundwater abstraction of the city lowers down the water table to about several tens of meters over the years.
The oxygen level of Groundwater pollution in bangladesh Buriganga, Tongi canal of Turag and a part of Norai is less than one in per microgram. The total amount of the remaining groundwater that is contaminated is unknown, although EPA estimates the amount contaminated by point sources to be percent.
The Wasa high-ups and the ministry concerned should take immediate and pragmatic measures to supply pure water to its twelve million customers Tahamid Ashraf, Bashabo, Dhakaaily Star, April 4, But, to meet the ever increasing demand of the city dwellers of one of the fastest growing mega-cities in the world, Dhaka Wasa without having any long-term vision, kept on installing deep-water pumps on a crisis by crisis basis.
More than hospitals and clinics of Dhaka city generate and release hazardous and toxic wastes without any treatment. Government organizations as well as NGOs present meetings and seminars to arise public awareness on the environmental issue. On the other hand, due to increasing population and industrial growth the demand for fresh drinking water is rising rapidly.
Excessive use of underground water crore litres a day through deep tube wells without any adequate replenishing mechanism has lead to an alarming drop in the underground water level. The existing feet deep tubewells are not considered adequate to extract water due to a significant lowering of the ground water table.
Roy, Daily Star, March 26, The contamination of groundwater by arsenic in Bangladesh is one of the largest poisoning of a population in the history. The scale of this environmental poisoning disaster is greater than any seen before.
Water Contamination in Bangladesh HydrateLife April 2, Health, Water Pollution 1 Comment A Bangladeshi woman gets water from a.
Water Pollution Water is considered polluted when it is altered from the natural state in its physical condition, and chemical and microbiological composition, so that it becomes unsuitable or less suitable for any safe and beneficial consumption.
The term contamination is used synonymously with pollution. Contamination of shallow aquifers by nitrates and synthetic organic chemicals is widespread in many areas; * Shallow groundwater contamination can be related to land use. * As yet, deeper as fifers, which commonly are used for public drinking water supplies, are relatively free from contamination.
Industries cause air and water pollution through smoke emission, inadequate solid waste management and dumping of untreated effluent to lakes, rivers and ground water. The arsenic pollution of groundwater has become a major disaster for Bangladesh.
Added to this pollution, fecal pollution is by far the most serious water contamination problem, while water and air pollution is causing increasing concern in the rapidly growing urban areas.
A recent incident of pollution of ground water by arsenic creates an alarming situation for the country's public health.Download