Pollution is an undesirable change in the physical, chemical or biological characteristics of air, water, soil or food that can adversely affect the health, survival or activities of human or other living organisms. The effects of water pollution are far-reaching and affect not only the environment, but human beings and animals as well. The pollution in Dhaka has reached alarming levels, threatening public health, ecosystems and economic growth.
The objective of the report is to create awareness regarding the environmental issues in Dhaka. The types of pollution focused in this assignment are mainly air pollution, water pollution, noise pollution and soil pollution. Everyday we face these pollution in the city some way or the other. The report identifies these problems and their underlying causes. Further, it addresses the major problems created in Dhaka city due to pollution and how it can be prevented.
Water is considered polluted when chemicals, pathogens, or contaminants are detected. Water pollution in Dhaka is mainly caused due to industrial processes that produce toxic waste, ground water pollution, natural catastrophes, growth of algae and littering on the land. Mainly there are three types of water pollution rainwater pollution, ground water pollution and surface water pollution. Rain water pollution is basically the acid rain and there is no record of rainwater pollution in Bangladesh. Surface water pollution is very common in Dhaka and is caused due to human activities. The sources of surface water pollution are industrial and urban wastes, agrochemicals and sewerage wastes and seawater intrusion. Groundwater contamination is the degradation of natural water quality as a result of human activities, and pollution occurs when contaminant concentration levels restrict the potential use of groundwater. Ground water is not directly exposed to surface...