Water pollution Assignment Example | Topics and Well Written Essays - 2250 words

Water pollution - Assignment exerciseis rising faster than any other region over the past decade, are similarly instituting pulverisation farming (FAO Food and Agriculture Organisation of U.N., Report, 2008). A major byproduct of broth farming is carnal waste. Thus, animal husbandry leads to point source pollution. One of the major problems associated with animal farming involves the movement of exuberant nutrients from manure and other byproducts to soil, water and air causing significant environmental problems. In the U.S., the production of broth and their feedcrops transports about one-third of the nitrogen and phosphorous discharged (from all sources) into freshwater. Besides the nutrients, the other major polluting agents resulting from livestock farming are pathogens and antibiotics and hormones, fertilisers, and the pesticides used to spray feed crops.Elements act in animal waste much(prenominal) as nitrogen, phosphorus, potassium, and other minerals are essential nut rients for plant growth. However, the manure may run-off during rainfall and pollute the waterways if inadequately contained. Uncontrolled and prolonged discharge of animal waste into waterways can add profuse amounts of nutrients to the waterways causing excessive growth of algae or algal blooms which may be toxic and consume large amounts of oxygen when decaying, thereby reducing the dissolved oxygen concentration in water, and killing fish and other organisms with the process of eutrophication.Pathogens including protozoan parasites such(prenominal) as Cryptosporidium parvum and Giardia duodenalis, bacteria such as Salmonella, Campylobacter, Escherichia coli, and Listeria monocytogenes and viruses are commonly present in manure and may runoff to surface waters with the possibility of their eventual transmission to animals and existence (USDA, United States Department of Agriculture, 2008).Animal wastes including wastewater and manure can have large concentrations of pharmaceu tically active compounds such as hormones and antibiotics