Слайд 1
water pollution
The project
student 8"A" class
secondary school No. 50
Romanova’s Anastasia
Слайд 2«Water is the juice of life on Earth"
Leonardo da
Vinci
Слайд 3Water itself has no nutritional value, but it is an indispensable
component of all living things. None of the living organisms of our planet cannot exist without water.
For example: Without food a person can live about 50 days, if during the hunger strike he would drink fresh water, without water he won't survive the week will die in 5 days.
Слайд 4 Water is the source of life, without which it is impossible
to live. It is considered a symbol of purity and fertility. In all known legends life originated in water. Many years ago when people appreciated the mutual respect higher than gold, on the spring he had written:
“Traveler, wait and bow. Spring water gives life to the young, old restores health, gives beauty and love of women...”.
Слайд 7Currently in the world there are few rivers that would not
be contaminated by products of human activity. With sewage in rivers are fertilizer and pesticides from agricultural land. And they get water out of the sewer and drainage ditches. Some plants is drained into rivers and lakes streams of dirty water. The pollution of rivers and lakes nitrate fertilizer grows on the planet almost every week. Unfortunately, even in that case, if to forbid the use of nitrate fertilizers tomorrow, the situation will deteriorate. Nitrates slowly for many years, seep through the ground into the rivers or lakes. Dirty waste water and fertilizers get into lakes and reservoirs and cause the rapid growth of slime — algae that choke the river fauna and flora
The first time a clear causal linkage between bad water quality and impacts on human health was established in 1954
Слайд 8About two billion tons of waste water comprising a mixture of
recycled fertilizers, sewage, industrial waste and waste generated as a result of human activity, discharged daily into rivers and seas causing the spread of diseases and causing irreparable damage to ecosystems. Therefore, the transformation of contaminated water from threats to health and the environment in a clean, safe and economically attractive resource is one of the key challenges for the global community in the twenty-first century.
Слайд 9 Up to 2 million sea birds and 100 thousand marine
animals die every year after swallowing any plastic products, chemical poisoned by the contaminated water, entangled in the ooze that grew because of biological contamination.
Слайд 10Contaminated water kills more people than war and all other forms
of violence.
"At least 1.8 million children under the age of 5 die from diseases associated with poor water, annually, that is one child every 20 seconds. Slightly less than half the hospitals in the world - people whose ailments are somehow related to contaminated water"
Слайд 12
Water pollution
Physical contamination
Chemical pollution
Biological contamination
Thermal pollution
Слайд 13Biological pollution is getting into water, together with wastewater of various
pathogens (bacteria, viruses), fungal spores, eggs, worms, etc. the Main sources of biological pollutants are domestic waste water, businesses, sugar mills, meat - and wood industry etc. such Especially dangerous pollution of water bodies in recreation areas (resort areas of the coasts of seas and rivers).
Слайд 14 Thermal pollution are effluents of heated water from power plants
and nuclear power stations. An example of radiation contamination is the Chernobyl disaster.
Слайд 15 Physical pollution is the increase in the content of water soluble
substances and bodies (bottles, cans, packages, etc.) the result of human factors, washout by rain waters the soil from the fields, mining dust, stirred by the wind, etc.
Слайд 16 Chemical pollution is released into the water various chemicals, wastes
of various industries: petrochemical, pulp and paper and municipal sewage, waste from livestock farms, etc.
Слайд 18The most..
Хуанхэ или Желтая река, Китай. Некоторые части реки настолько загрязнены,
что вода не рекомендуется даже в промышленном использовании. Выбросы неизвестного происхождения окрасили даже
River Buriganga, Bangladesh. Environmentalists call it a "dead river" due to its biological state. But even the ban does not stop the discharge into the river of industrial wastes.
Слайд 20 Children's Fund United Nations whose primary purpose is to protect
and promote the rights of children to safe, healthy and happy childhood, the rally was organized by DirtyWater("Dirty water") in new York.
Слайд 21Purpose: to draw people's attention to the problem of lack of
clean water in African countries.
Слайд 22Implementation: On the street were vending machines where anyone can buy
water for $1, as if infected with various dangerous diseases, like hepatitis or malaria. Actually water does not infected. But the water is stained and looks dirty.
Слайд 23Slogan: Only $ 1 is required to provide the child with
clean drinking water for 40 days.
Слайд 24March 22 was declared world water day in 1992. Since then,
in this day around the world held events to attract public attention to the problem of water pollution.