Ô nhiễm nước là gì WHAT IS WATER POLLUTION

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WHAT IS WATER POLLUTION? What is the concept of water pollution? Types of water pollution Where does water pollution come from? There are several classes of water pollutants What is the concept of water pollution? Water pollution is any chemical, microorganisms or biological change in the quality of water environent_that has a harmful Nutrients on any living thing that drinks or uses or lives in it When humans to use polluted water it often becoming serious effects on their health Water pollution can also make water unsuited for the desired use Surface water pollution Groundwater Pollution Types of water pollution Microbiological pollution Suspended Matter TYPES OF WATER POLLUTION Surface water pollution: pollution is the most visible form of pollution and we can see it floating on our waters in lakes, streams, and oceans Groundwater Pollution: is more and more relevant because it affects our drinking water and the aquifers below the soil TYPES OF WATER POLLUTION Microbiological pollution is the natural form of water pollution that is caused by microorganisms in uncured water Suspended Matter Pollution are usually found in wastewater and fertilizers Where does water pollution come from? Water pollution is usually caused by human activities Different human sources add to the pollution of water There are two sorts of sources, point and nonpoint sources There are several classes of water pollutants The first are disease-causing agents Second category of water pollutants is oxygen-demanding wastes  When large populations of decomposing bacteria are converting these wastes it can  These are bacteria, viruses, protozoa and deplete oxygen levels in the water This parasitic worms that enter sewage systems causes other organisms in the water, such as and untreated waste fish, to die There are several classes of water pollutants A third class of water pollutants is water- soluble inorganic pollutants A very dangerous category is suspended sediment  because it causes depletion in the water's  Large quantities of these compounds will light absorption and the particles spread make water unfit to drink and will cause the dangerous compounds such as pesticides death of aquatic life through the water What are the major water pollutants? Explain them There are many water pollutants such as: bacteria, viuses, parasitic(vi khuẩn, virut, ký sinh trùng) oxygen- demanding wastes (chất thải bị phân hủy vi khuẩn yêu cầu oxy) acids, salts and toxic metals(axit, muối kim loại độc) water- soluble nitrates and photphates(nitrat photphat) oil,plastic and pesticides(dầu, nhựa dẻo thuốc trừ sâu) supended sediment(trầm tích bị giữ lại) radioactive compounds(hợp chất phóng xạ) Which water pollutants can cause cancer, birdt defects and genetic damage ? It is radioactive compounds 3.Where does water pollution come from? It come from the source of human activity (nguyên nhân gây ô nhiễm nguồn nước đến từ hoạt động người) How many sources water pollution are there? What are they? There are two sorts of sources, point and nonpoint sources Where does point sources dischange pollutants? It does pipelines or sewers into the surface water B.Read the text again and decide whether the following statements are True( T) or False(F) T There is a class of water poollutants F The bacteria, viruses, protozoa and parasitic worms are not disease – causing agents T When large populations of decomposing bacteria are converting there wastesit can deplete oxygen level in the water F Water can be not polluted by a number or organic compounds such as oil, plastics and pesticides, which are harmful to humans and all plants and animals in the water 5. T Water- soluble radioactive compounds can cause cancer, birth defects and genetic damage 6. F Water pollution is usually caused by human activities 7. T Point sources discharge pollutants at specific locatons through pipelines or sewers into the surface water 8. T Nonpoint sources are sources that cannot be traced to a traced to a sing site of discharge .. .What is the concept of water pollution? Types of water pollution Where does water pollution come from? There are several classes of water pollutants What is the concept of water pollution? Water. .. polluted water it often becoming serious effects on their health Water pollution can also make water unsuited for the desired use Surface water pollution Groundwater Pollution Types of water pollution. .. Microbiological pollution Suspended Matter TYPES OF WATER POLLUTION Surface water pollution: pollution is the most visible form of pollution and we can see it floating on our waters in lakes,