AIR POLLUTION SOURCES, CAUSES, DAMAGES AND HOW TO PREVENT A. Causes of Water Pollution Sources There are several causes of water pollution, among others, when the water is contaminated with pollutants such as household waste water, industrial sewage waste, the remnants of tau fertilizers pesticides from agricultural areas, hospital waste, animal manure, particulate- particulate customary result of forest fires volcano is erupting or sediment erosion results yag places in laluinya. Air Pollutants Basically Water Pollutants can be grouped into: a) Waste penguraianya process requires oxygen, which is waste containing organic compounds, for example sapah idustri food, cane sugar industry waste, household waste, animal waste and human waste, plants and animals die. For the process of decomposition of the garbage banak ersebut require oxygen, so that when the waste is contained in the water, the waters will be deprived of oxygen, fish and organisms in water will die of oxygen deprivation. In addition, the process of decomposition of waste that contains proteins will produce a foul-smelling gas H2S, making the water unfit for dimnum or to bathe. C, H, S, N, + O2, CO2 + H2O + H2S + SO + NO2 Organic compounds b) Material pollutants cause of the disease, ie pollutants that contain viruses and bacteria msal coli bacteria that can cause digestive tract diseases (dysentery, cholera, diarrhea, types) or skin disease. These pollutants come from household waste, hospital waste, or feces of animals and humans. c) an inorganic compound pollutant materials / minerals such as heavy metals like mercury (Hg), cadmium (Cd), lead (pb), copper (Cu), inorganic salts. Pollutants in the form of black metal that enters the body usually through food and can accumulate in organs such as kidneys, liver, spleen, intestinal tract that disrupts the function of other organs such. d) Raw organic pollutants that can not be broken down by microorganisms are organic compounds derived from pesticides, herbicides, polymers such as plastics, detergents, synthetic fibers, industrial waste and waste oil. e) Material pencmar form of food plants such as snyawa nitrate, phosphate compounds can cause umbuhnya algae (algae) that rapidly cover the water surface. Additionally, it will disrupt the ecosystem of water, turn off the fish and organisms in the water, because levels of oxygen and sunlight is reduced. This is due to oxygen and sunlight needed organism in water is blocked and can not get into the water. f) Materials in the form of radioactive contaminants, can cause cancer, damage the cells and other body tissues. These pollutants come from sewage plants and other nuclear testing. g) Material pollutants in the form of sediment / soil and sediment such as mud on the river bank due to erosion or particulate-particulate solid / lava is sprayed by the NII in berapu mountain that erupted, causing water to become cloudy, sunlight is reduced and water is less able to assimilate waste. h) Material pollutants in the form of conditions (eg, heat), derived from waste listrikatau waste generating industries that use water as coolant. This hot pollutants causing the water temperature increases are not suitable for aquatic life (organisms, fish, and plants in water). Plants, fish, and dead organisms that will break down into organic compounds. To enyawa organic decomposition process requires oxygen, resulting in decreased levels of oxygen in the water. Broadly speaking tesebut water pollutants above can be grouped into: 1. Organic pollutants, whether they can undergo decomposition by microorganisms and which can not undergo decomposition. 2. Inorganic pollutants, heavy metals and can form minerals. 3. Pollutants in the form of sediment / sludge Anah / mud. 4. Pollutants in the form of radioactive substances. CAUSES OF WATER POLLUTION Water pollution can be caused by many things and have different characteristics. The increased content of nutrients can lead to eutrophication. Organic wastes such as sewer water causes increased oxygen demand on the receiving water leading to reduced oxygen that can impact badly on the entire ecosystem. Industry dispose of various kinds of pollutants into the waste water such as heavy metals, organic toxins, oils, nutrients and solids. Waste water has a thermal effect, especially those released by power plants, which can also reduce oxygen in water. As plant waste is flowing into the rivers. As in the Citarum river. Encemaran water by trash. DUE TO AIR POLLUTION Can cause flooding. Erosion. Lack of water resources. Can create a source of disease. Landslides. Could damage the river ecosystems. Losses for fishermen. Prevention of water pollution To prevent water contamination does not occur, in our activity in meeting the necessities of life should not increase the occurrence of pollutants, among others, do not dispose of household waste, hospital waste, waste / industrial waste in vain, do not throw into the water stream, lake or to the in the gutter. Not using fertilizers and pesticides to excess, because residual fertilizers and pesticides will pollute the water in the farm environment. Not using phosphate detergents, because of phosphate compounds is food for aquatic plants like water hyacinth that can cause water pollution. Water pollution that has occurred naturally for example the amount of heavy metals enter and accumulate in the human body, these heavy metals can poison the body through the digestive organs because the body is consuming plants that contain heavy metals, although needed in small quantities. Accumulation of these heavy metals occur in plants because of contamination by industrial waste. To overcome to avoid the accumulation of heavy metals, the industrial waste processing should be performed before discharge into the environment. The process of pollution prevention is better than the prevention of pollution that has occurred. Waste treatment Industrial waste before disposal to landfill, poured into rivers or ditches should be collected in a space provided, then processed, so that when forced to be discharged into the river does not cause water pollution. Even if you can after being processed is not discharged into the river but can be used again for its own industrial purposes. Solid waste from households in the form of plastic or synthetic fibers that can not be broken down by microorganisms are separated, then processed into other useful materials, for example, can be processed into mats. Organic waste that can be broken down by soil microorganisms buried in a hole, then if you have rotting can be used as fertilizer.