Definition of Pollution “the introduction by man into the environment of substances/energy liable to cause hazards to human health , harm to living resources and ecological systems , damage to structure or amenity or interference with legitimate uses of the environment”(Mason,2001) Definition of Pollutant “Chemical or physical in nature and can be measured more or less accurately in water”(Mason,2001)
Pollution of the aquatic environment • Introduction by man, directly or indirectly, of substances or energy which result in such deleterious effects as: -harm to living resources, -hazards to human health, -hindrance to aquatic activities including fishing, -impairment of water quality with respect to its use in agricultural , Industrial and often economic activities, and -reduction of amenities Resource : World Health Organization(WHO)
What is Organic Pollution?
Organic pollution, usually related to discharge of sewage into coastal waters, affects the development of fouling directly and indirectly. Nutrient enrichment may cause eutrophication. The latter is the most harmful and causes depletion of oxygen in the water column (Aubert and Aubert, 1986).
What is Organic Pollutants?
Refer to chemical or physical discharged derived from living organism.(Lenntech B.V,2011)
Discharged of waste into water(consist of organic pollutants)
Excess of organic matter , depletion of oxygen
Lead to ORGANIC POLLUTION
MAJOR SOURCES OF ORGANIC POLLUTION
Musk Fragrances Rubber Factories Paper Pulp Mills
Industrial Effluent(Breweries , dairies and food processing plants)
Sewage including raw or treated
• SEWAGE TREATMENT WORKS the design capacities of many sewage treatment works are below the population they have to serve. poor quality water discharged from a seawage treatment work into the rivers . cause chronic pollution of rivers. results in many parasitic infections and waterbone disease (dysentry,cholera,poliomyelitis)
Siu Ho Wan Sewage Treatment Works, Hong Kong
• INDUSTRIES Breweries
Dairies Food processing plants • Run-off from hard surfaces and roads of towns, especially during storm conditions can be very polluting.
A labourer works at an assembly line in a factory of China Resources Snow Breweries Co., Ltd. in Lanzhou, Gansu province August 25, 2010. REUTERS/Stringer
According Waikatere City Council: “stock have access to streams and rivers for drinking water, excrement may be deposited directly into the water.“ (The Dairy Industry: Milking the land for all it's worth, http://nzdairy.webs.com/environmentalissues. htm)
Mega dairies cause water pollution in USA (Environment Agency blow to mega dairy plans, http://www.wspa.org.uk/latestnews/2011/Environment_Agency _blow_to_mega_dairy_plans.aspx)
FOOD PROCESSING PLANT
• PHOTOGRAPH OF FRESH VALENCIA ORANGES BEING WASHED AT THE ORANGE JUICE FOOD PROCESSING PLANT OF DONALD DUCK COMPANY IN CLAREMONT, LAKE WALES, FLORIDA
Food processing plant carrying olives into the mill
• AGRICUTURAL ACTIVITIES One of factor of freshwater pollution. Pesticides and other chemical substances, even if they are not directly dumped into rivers and lakes, are released into the atmosphere through rain, poisoning marine life. Human and animal waste also pollutes water supplies also used for drinking water in developing countries that cannot afford water treatment facilities. While fresh water sources are sustainable, pollution means there isn't enough safe drinking water for everyone.
Effect of Organic Pollution – Fairly heavy pollution : sewage fungus develops. – Heavy organic pollution : affects whole taxonomic groups of macroinvertebrates rather than individual. – Severe pollution : the tubificid worms , Limnodrilus hoffmeisteri and/or Tubifex tubifex , are the only macroinvertebrates to survive. – Chronic organic pollution : fish are...