Water pollution research

Water Pollution

Water pollution is the introduction of chemical, physical, biological, agents into water that degrade water quality and adversely affect the organisms that depend on the water.

 

Types of pollution:

 

point source pollution:  Point source pollution is a pollution that is discharged from a single source.

Non point source pollution:, unlike pollution from industrial and sewage treatment plants, comes from many diffuse sources. NPS pollution is caused by rainfall or snowmelt moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters, and even our underground sources of drinking water.

Waste water: is water that contains waste from homes or industry. At a wastewater treatment plant , water is filtered and treated to make the water clean enough to return to a river or lake. Examples of waste water pollution: Treating wastewater, sewage sludge.

Artificial Eutrophication:  The natural process of Eutrophication is accelerated when inorganic plant nutrients , such as such as phosphorus and nitrogen, enter the water from sewage and fertilizer runoff. Eutrophication caused by humans is called Artificial Eutrophication that occurs because of the introduction of inorganic plant nutrients into a body of water through sewage and fertilizer runoff.

Thermal pollution: When the temperature of a body of water, such as a lake or stream, increases, can result. Thermal pollution can occur when power plants and other industries use water in their cooling systems and then discharge the warm water into a lake or river.

Groundwater pollution: Groundwater pollution is a type of pollution which occurs when groundwater becomes contaminated. Around the world, groundwater pollution is a very serious and costly problem, and many governments have started to take aggressive action to address it. Once contaminated, groundwater is very expensive to clean up and make usable again, and in some cases, an aquifer may be so contaminated that it has to be abandoned, which can put tremendous pressure on a community as it attempts to find a new supply of water.

Ocean pollution: Ocean pollution can kill fish, plants and animals, spoil beaches and swimming areas, and make people ill.

Ocean pollution can be prevented by banning the use of the dangerous forms of agricultural chemicals, building sewage treatment plants, using aircraft to follow and monitor ships, and using laws to stop industry dumping waste in the rivers and seas.

Water pollution in Thailand

The quality of the water in the country's major rivers, including the Chao Phraya, is worsening while the air in Bangkok has become more polluted, the 2010 Thailand Pollution Report says.

The annual report, conducted by the the Pollution Control Department and released yesterday, showed the state of the environment in Thailand deteriorated in almost all aspects.

Scientists examined water quality in 48 major rivers and freshwater sources nationwide and found that 39% of the water sources were poor quality, increasing from 33% in 2009.