Water Pollution Ppt
Water pollution results when contaminants are introduced into the natural environment. Petroleum often pollutes waterbodies in the form of oil, resulting from oil spills.
Underground storage and tube leakages Many liquid products petroleum products are stored in metal and steel tubes underground. Water is typically referred to as polluted when it is impaired by anthropogenic contaminants. Beaches around the world are closed regularly, often because of high amounts of bacteria from sewage disposal, and marine wildlife is beginning to suffer. Effects of Water Pollution The effects of water pollution are varied and depend on what chemicals are dumped and in which locations. Oil Spill Clean-up Workers use special nets to clean up a California beach after an oil tanker spill.
Small quantities of oil spread rapidly across long distances to form deadly oil slicks. Eighty one percent of community water is dependent. However, because this runoff is typically channeled into storm drain systems and discharged through pipes to local surface waters, it becomes a point source. Non point sources are much more difficult to control. The sewage and waste water that is produced by each household is chemically treated and released in to sea with fresh water.
In contrast, however, newly industrialized countries such as China, India, Thailand, Brazil, and Mexico are now facing all these issues simultaneously. Water portal Sustainable development portal Environment portal.
In addition to innocent organisms dying off, our drinking water has become greatly affected as is our ability to use water for recreational purposes. Sewage treatment plants and industrial wastewater treatment plants are usually required to protect water bodies from untreated wastewater.
PPT Water Pollution Power Point Presentation
These decreases in temperatures are caused when a discharge of cooling water by factories and power plants occurs. Chemical Water Pollution Many industries and farmers work with chemicals that end up in water. In urban areas of developed countries, municipal wastewater or sewage is typically treated by centralized sewage treatment plants.
Effective control of urban runoff involves reducing the velocity and flow of storm water, as well as reducing pollutant discharges. Around our houses, we must keep litter, pet waste, leaves, and grass clippings out of gutters and storm drains. The distinction of point vs.
Surface water pollution Surface water includes natural water found on the earth's surface, like rivers, lakes, lagoons and oceans. However, the rapid growth of the urban population especially in Latin America and Asia has outpaced the ability of governments to expand sewage and water infrastructure. Retention basins tend to be less effective at reducing temperature, as the water may be heated by the sun before being discharged to a receiving stream.
Whether or not accidental spills occur during the project, its impact on the delicate marine ecosystem of the coral reefs could be devastating. Overtime, they rust and begin to leak.
Sometimes there is natural pollution caused by micro-organisms like viruses, bacteria and protozoa. Too much algae will also use up all the oxygen in the water, and other water organisms in the water will die out of oxygen starvation.
The last form of water pollution is heat. Water pollution is the second most imperative environmental concern along with air pollution. Diseases Eventually, humans are affected by this process as well. Non point source controls Sediment loose soil washed off fields is the largest source of agricultural pollution in the United States. In turn, this can lead to public health problems for people living downstream.
This natural pollution can cause fishes and other water life to die. These indicator bacteria suggest that a certain selection of water may be contaminated with untreated sewage and that other, more dangerous, organisms are present.
Excessive growth of these types of organisms consequently clogs our waterways, use up dissolved oxygen as they decompose, and block light to deeper waters. Conservation strategies have to become more widely accepted, and people must learn that energy use can be dramatically diminished without sacrificing comfort. If you use chemicals and pesticides for your gardens and farms, be mindful not to overuse pesticides and fertilizers.
Microbiological In many communities in the world, people drink untreated water straight from a river or stream. Point source water pollution refers to contaminants that enter a waterway from a single, identifiable source, such as a pipe or ditch. Marine pollution and nutrient pollution are subsets of water pollution. Consequently, groundwater pollution, also referred to as groundwater contamination, is not as easily classified as surface water pollution. In short, with the technology that currently exists, of head first java book the years of global environmental mistreatment can begin to be reversed.
Share This With Your Friends. Other causes of water pollution Sewage and waste water Sewage is the term used for wastewater that often contains feces, urine and laundry waste. An example is directly discharging sewage and industrial waste into the ocean. Pollution such as this occurs particularly in developing nations. Point source pollution Point source pollution refers to contaminants that enter a waterway through a discrete conveyance, such as a pipe or ditch.
Pollutants get into water mainly by human causes or factors. Non-point sources are more diffuse, such as agricultural runoff. High concentrations of naturally occurring substances can have negative impacts on aquatic flora and fauna.
By the turn of the century, cities in Europe and North America began building sewer networks to route domestic wastes downstream of water intakes. Industries that generate wastewater with high concentrations of organic matter e. Center for Watershed Protection. Scientists gathering this type of data often employ auto-sampler devices that pump increments of water at either time or discharge intervals. Contamination of water bodies.
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