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!