water pollution 水污染ppt

Effects of Thermal Water Pollution
Effects of Heavy Metal Water Pollution
Some other effects of water pollution
Machinery in the industries are cooled with water from lakes and rivers. This water reaches the river in a heated state. This water decreases the ability of the aquatic system to hold oxygen and raises the growth of warm water species.
Municipal causes
Industrial causes
Agricultural causes
The effects of water pollution are seen in Thermal, Heavy
Metal, Agricultural regions
Effects of Agricultural Water Pollution
In rivers, oceans and seas, water pollution effects flora and fauna in them. Further, the birds and animals that consume this contaminated food supply can perish. Blood diseases, nervous system disorders and heart diseases are some of the effects of water pollution.
• Toxic products like paints, automobile oil, polishes, and cleaning products should be stored and disposed off properly. As a matter of fact, it is better to use nontoxic, products for the house as far as possible. Also, never dispose off such products by throwing them into your toilet or sink. • Dispose off your trash in a proper manner and try and incorporate the recycling habit as far as possible. Nondegradable products like tampons, sanitary napkins, and diapers should not be flushed down the toilet, for these can end up damaging the process of sewage treatment, and usually end up as litter on beaches. • Refrain from throwing litter into streams, lakes, rivers, or seas. If you do spot litter on beaches or in water systems, after ascertaining that it is safe, collect them and dispose off them in any nearby waste disposal system.
• Organic water pollutants are:
• Food processing waste, including pathogens • Insecticides and herbicides, a huge range of organohalide and other chemicals • Tree and brush debris from logging operations • Bacteria from sewage or livestock operations • Petroleum hydrocarbons like diesel, gasoline, jet fuels, fuel oils, motor oils • Volatile organic compounds like industrial solvent
Women are made of water.
春 潮 带 雨 晚 来 急 ， 野 渡 无 人 舟 自 横 。
桃花潭水深千尺，不及汪伦送我情。
暗疏 香影 浮横 动斜 月水 黄清 昏浅 。，
Comprising over In order to However,wewater combat 70% of the Earth’s disregard it by pollution, we surface, water is polluting our must understand undoubtedly the rivers,problems and the lakes, most precious andbecome part of oceans. natural resource Subsequently, we the solution. that exists on our are slowly but planet. surely harming our planet.
1 2 3 4
Water Pollution Facts
Causes of Water Pollution
Effects of Water Pollution
Ways to Prevent Water
5
Water Pollution Solutions
Water Pollution Facts, Figures and Statistics
• • • • •
Inorganic water pollutants are: pre-production industrial raw resin pellets heavy metals including acid mine drainage chemical waste as industrial by-products acidity due to industrial discharges like sulfur dioxide • silt in surface runoff due to logging, slash and burn practices, construction sites or land clearing sites • fertilizers in runoff from agriculture including nitrates and phosphates
• Refrain from throwing litter into streams, lakes, rivers, or seas. • Dispose off your trash in a proper manner and try and incorporate the recycling habit as far as possible. • Try using environmentally friendly household products. • Try using natural fertilizers and pesticides as far as possible. • Automobile oil should be re-used as far as possible • Also, actively conserve water by turning the tap off when you do not need running water.
• Rivers in the continent of Asia are considered to be the most polluted. These rivers contain 20 times as much lead found in water bodies of the industrialized countries of other continents. The bacteria (from human waste) found in these rivers are 3 times as much as that of the global average.
Effects of Agricultural Water Pollution
Heavy metals like lead, mercury, iron, and magnesium are present in water sources. If these metals are present in the sediment, these reach the food chain through plants and aquatic animals. This causes heavy metal poisoning in case the level in the water is very high.
homes and commercial establishments.
• Industrial causes vary as per the biochemical demand, suspended solids, inorganic and organic substances. • Agricultural causes include commercial livestock and poultry farming. These lead to organic and inorganic pollutants in surface waters and groundwater.
Effects of Thermal Water Pollution
Effects of Heavy Metal Water Pollution
Some other effects of water pollution
Rain and irrigation water drains off cultivated land that has been fertilized and treated with pesticides, the excess nitrogen and poisons are mixed with it into the water supply.
• The effects of water pollution are seen in Thermal, Heavy Metal, Agricultural regions and due to fertilizers, chemicals, oil and contaminated ground water.
• In Ireland, fertilizers and sewage are the main pollutants of water. Around 30% rivers in this country are polluted with the above mentioned pollutants.
Municipal, industrial and agricultural are
the different categories of the causes of waes are related to waste water from