When the land, air and water is made dirty by oil, it is then said that it is polluted. Laws have been made to prevent pollution. Pollution can be dangerous to human life and even kill plants and animals. Laws have been passed whereby companies must use anti-pollution equipment.
At one time big cities were unhealthy places to be in winter because of the dirty fuels that factories used and the burning of coal. Buildings were blackened, plants died and pollutants got into peoples’ lungs.
Water can be polluted by tankers being holed or a disaster where the crude oil poured into the sea. Many sea birds die as a result of such disaster.
Major oil companies came up with a system to stop pollution called “Load-On-Top.”
In this procedure crude oil carriers tanks are washed out at the end of voyages and the oily water from the wash out is loaded in one tank. Some oil from the next cargo is put on top of the water. Once the cargo reaches the refinery the oil and water is separated. Therefore some oil pollution is controlled.
On land firms can re-refine oil and make a product as good as new. Motorists add to the pollution problem by being careless where they empty out the oil from their cars. Some disposal methods used are burning, burying or pouring the oil down drains.