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SUSTAINABLE DEVELOPMENT – A GREEN FUTURE FOR EUROPE
OBCHODNÍ AKADEMIE KARVINÁ
presents
The purity of water in the Czech Republic
Hana Hodulíková, Hana Látová and Denisa Piačková
Approximately one third of flows remains excessive pollution
10% of the lengths of all streams are found water unpolluted or only slightly polluted
TheVltava river
BLUE- the best water quality RED- the worst water quality
Water pollution in the Czech Republic
Caused by:-Lowering oxygen content- occurrence of pollutants in water- thermal pollution
The Bílina river – the most polluted river
The basic groups of harmful substances that pollute water:
1. Salt2. Heavy metals (mercury, lead, cadmium, copper,
arsenic) -Industrial technological processes - sludge from sewage treatment plants - fertilizers - burning fossil fuels
3. acid rains
4. Organic substances (oil processing, coal, paints and varnishes, ..)
5. Increased content of nutrients (chemical nitrogen, phosphorus, carbon, ..) -> effect of reducing the oxygen content in water
6. Viruses and bacteria (get into the water from the waste water from households, agriculture, ..)
Reported releases of pollution in Czech Republic in 2006 -
amountsName Amounts
(kg/year)
Chloridy 47 873 101
Organický uhlík 3 795 190
Dusík 3 093 150
Fosfor 42 886
Fluoridy 33 152
Zinek 30 741
Halogenované organické sloučeniny 29 870
Kyanidy 3 064
Protection against pollution
- Urban and industrial wastewater treatment plant
- prevention, following good business practices and responsible approach to the environment
- small streams are then significant strengthening their natural self-cleaning
wastewater treatment in Karviná
Drinking water in the Czech RepublicDrinking water is obtained by adjusting the raw water.
Raw water is extracted from underground in the Czech Republic (45% –55 %) or surface water (45% -55 %).
water sources: - Water sourec Želivka- Water source Káraný - Water source Podolí- Water source Čerlinka - Water source Litá
Water consumption by households(in liters per one person per day):
1994
1996
1998
2000
2002
2004
2006
2008
2010
2012
129
116
110
107
103
102
97,5
94,2
89,5
88,1
Thank you for your attention!
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