Pdf sources and causes of water pollution in bangladesh. Water pollution is caused by foreign objects and chemicals entering the aquatic ecosystem or when natural chemicals build up in excess amounts. Statewide surface water management strategy appendix c. Nonpoint sources are more diffuse, such as agricultural runoff. A major water pollutants has been oil spilled in large quantities from tankers of. If they end up in water bodies, they encourage algae and weed growth in the water.
Water pollution from agriculture has direct negative impacts on human health. Pollution is of different kinds depending on the nature of pollutants and pollutions. Water pollution affects plants and organisms living in these bodies of water and in almost all cases the effect is damaging not only to individual. Sumit thakur uncategorized download sources of water ppt power point presentation pdf. The major causes of water pollution include sewage and other oxygendemanding wastes, urbanization, agrochemical wastes, thermal pollution, industrial wastes, nutrient enrichment, acid rain pollution, oil spillage, the disruption of sediments. Nutrients pollution some wastewater, fertilizers and sewage contain high levels of nutrients. Point sources have one identifiable cause of the pollution, such as a storm drain, wastewater treatment plant or stream. Radiation is the process by which radiant energy is transferred from one place to another in the form of electromagnetic waves. Pollutants and sources technology transfer network air.
Point source pollution enters a water body at a specific site and is generally readily identified. Sources of water pollution water pollution in nigeria according to gbamanija 1998 arises from various activities, among which are. The water pollution threatens food production and is raising both environmnetal and human health concerns 38. Dispersed sources are broad, unconfined areas from which pollutants enter a body of water.
One of the most destructive types is petroleum pollution. Types of water pollution refer to the contamination of water bodies which happens because of pollutants that get into it before their harmful compounds have been removed. Component % organic mineral matter 45 organic matter 05 soil water 25 soil air 25. Pdf on jan 1, 2016, asha gupta and others published water pollution sources,effects and control find, read and cite all. A technical overview article pdf available december 2017 with 18,209 reads how we measure reads.
Water pollution prevention project toolkit this toolkit explores the water pollution potential on a typical school campus or in the community where water flows and what it picks up. The surface water pollution has a number of sources. Epa research supports efforts under the clean water act and safe drinking water act. There are three major sources of pollutants of waterhome, agriculture, industry. Pollution of water are the results of various causes. Point source pollution occurs when a pollutant is discharged at a specific source. Both for the purpose of this research, emphasis are on water pollution and control. Fresh water pollution may be classified into two types. If the information you are looking for is not here, you may be able to find it on the epa web archive or the january 19, 2017 web snapshot. Nonpoint sources the term nonpoint source encompasses a large range of sources such as. Sources and causes of water pollution that affect our environment.
There are many types and sources of water pollution. Contaminated water is the main source of infectious diseases e. Indoor pollutants and sources indoor air quality iaq. Hazardous air pollutants, also known as toxic air pollutants or air toxics, are those pollutants that cause or may cause cancer or other serious health effects, such as reproductive effects or birth defects, or adverse environmental and ecological effects.
Water topics when the water in our rivers, lakes, and oceans becomes polluted. Secondary air pollutants are the ones that are formed as a result of reactions between primary pollutants and other elements in the atmosphere. Mehtab haseena, muhammad faheem malik, asma javed, sidra arshad, nayab asif, sharon zulfiqar and jaweria hanif department of zoology, university of gujrat, pakistan accepted on july, 2017 keywords. Pdf causes, effects and solution of water polution. Point source when pollutants enter the water course at specific sites, such as a discharge pipe. Water pollution, sources of water pollution, harmful chemicals, infectious diseases. Storm drainage, even though the water may enter watercourses by way of pipes or channels, is considered nonpoint source pollution.
This increases water temperature and lowers the metabolic rate of organisms. The presence of natural or nonnatural pollutants in water resulting from human activity such as the introduction of harmful agricultural and industrial pollutants into rivers that could be the. Nonpoint source pollution refers to runoff that enters surface waters through stormwater runoff, contaminated ground water, snowmelt or atmospheric deposition. Sources of water pollution are divided into two main categories. Due to the uncertainty about conditions, causes, and sources, it is difficult to generalize about this categorys potential effects on human health and beneficial uses. As it travels along the land surface, the runoff increases in velocity and volume, picking up a wide variety of pollutants such as sediment, pathogens, and debris. Types of water pollution, causes, sources and effects.
Types, sources, effects, control of radiation pollution. The sources of pollution in general are divided into point sources and nonpoint sources. Another source of water pollution is the discharge of hot water from cooling engines in the industries. A point source pollutant is one that reaches water from a single pipeline or channel, such as a sewage discharge or outfall pipe. In the study area water pollution caused mainly from home and agriculture rather than industry. Soil pollution types, effects, sources and control of.
Water covers about 70% of the earths surface whereas 0. Water pollution and types of water pollutants online. While organic pollution occurs naturally, inorganic pollution is a result of some human interaction or doing such as fluoride in the water supply which is used to help teeth health. Wastewater treatment sources of water pollution britannica. Environmental pollution can be defined as a change that is not wished or desired in the chemical, physical, or biological characteristics of any component of the environment air, water, and soil which can cause harmful effects on various or many forms of life. In simple words, the contamination of water bodies means water pollution. Pollution sources pollution is often described as point source or diffuse or nonpoint pollution. Groundwater is one of the easiest ways to tell how the environment is reacting to different types of pollutants. Water pollution and types of water pollutants water pollution. The sources and impacts of water pollution soapboxie. In other words, the source of the pollutant can be easily identified. Primary air pollutants are the ones that are emitted directly into the atmosphere by the sources such as powergenerating plants.
Water pollution water is considered polluted if some substances or condition is present to such a degree that the water cannot be used for a specific purpose. This exploration will help your group reduce the source of pollution. Land pollution ppt and pdf download sources of water ppt and. Point source pollution occurs when a pollutant is discharged at. Download sources of water ppt power point presentation pdf. This paper tries to discuss basically what water pollution is and equally to address the source, effect control and water pollution management as a. Read this article to learn about the types, sources, effects and control of water pollution. Pollution poses a serious risk to life especially when the water is a source of drinking and for domestic purposes for humans polluted waters are potent agents of diseases such as cholera, typhoid and tuberculosis.
Petroleum products, such as oil and gasoline, enter the water from ships and marine terminals, offshore oil rigs, runoff from parking lots, factories, oil dumping. The quality of water can be dramatically affected by pollution. Types of water pollution there are many types of water pollution because water comes from many sources. Agriculture is the leading cause of water pollution, as its fertilizers, pesticides, salts, sediments and wastes make their way into the water through runoff or groundwater. Sources of water pollution are either point sources and nonpoint sources.
Water pollution is the contamination of water bodies e. Water pollutants are categorized as point source or nonpoint source, the former being identified as all dry weather pollutants that enter watercourses through pipes or channels. Present drinking water can be defined into three different classifications and they are mentioned below. Air pollutants can also be of primary or secondary nature. Classification of water pollutants the various types of water pollutants can be classified in to following major categories. Non point sources are a result of a multitude of places urban streets, suburbia, homes, and most importantly, agriculture. States reported that more than half of all lakes were affected.
Source of pollution an overview sciencedirect topics. This form of water pollution is arguably the most manageable, however it is an urgent environmental issue that these larger pollutants be removed in order to avoid disruption of aquatic ecosystems and contamination upon the chemical breakdown of these objects. Sources and causes of water pollution in bangladesh. Point sources are localized identifiable sources of contaminants, such as power plants, refineries, mines, factories, wastewater treatment plants, etc. When we turn on the tap, we expect our water to be clean and safe.
Pollution of water occurs when substances that will modify the water in negative. Human activities as a source of pollutants and water. Water pollutants may originate from point sources or from dispersed sources. Organic pollution verses inorganic pollution inorganic. Olaniran 1995 defined water pollution to be the presence of excessive amounts of a hazard pollutants in water in such a way that it. Just as applying fertilizer to gardens and farm fields helps crops grow, nutrients.
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