tisza-danube
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Tisza-Danube. “ Water Chernobyl ”. Cyanide. Toxic chemical that is used in mining and other industries. Cyanide. Cyanide was used in Romania at a mining operation Separates gold from rock After it is used it was stored behind a dam. January 30,2000 - PowerPoint PPT PresentationTRANSCRIPT
TISZA-DANUBE“Water Chernobyl”
Cyanide Toxic chemical that is used in
mining and other industries
Cyanide Cyanide was used in
Romania at a mining operation
Separates gold from rock After it is used it was stored
behind a dam
January 30,2000 Rain swelled the pond and it
reached a dangerously high level The dam burst releasing 100,000
cubic meters of cyanide water into the Szamos River
Equivalent to 30 Olympic pools
Szamos River in Romania Went across Hungary and
entered the Tisza River Tisza empties into the Danube Went across Serbia,
Montenegro, and Bulgaria and then into the Black Sea
Effects Dead fish
Killed 200 tons of fish
Hundreds of otters
Fish-eating birds died
Effects Other animals that
ate or drank from the water died.
Effects Affected the water supply of 2.5
million people Shut down water systems
Effects Warned people to stay away
from water Canceled trips
to area
Did not last long Breaks down in sunlight When reached the Danube – no
longer toxic to fish Take years for the river to “get
back to normal”
Other Sources of Water Pollution
Mining Farming – chemicals and
fertilizers Boats factories
Efforts to Reduce Water Pollution
Different groups working on helping the Danube in the future
“Danube Day”
Tisza-DanubeA Burst Dam Releases Deadly Chemicals Write the name of the country that was the source of the
water pollution. On the map, color the source of the water pollution.
Then complete this sentence: Accidental water pollution occurred when…
Cyanide Flows into the Danube River System Summarize how the pollution spread. Names two
countries most affected by the pollution. Then complete this sentence: One consequence of the
spread of water pollution across borders was…
Efforts to Reduce Water Pollution Describe one effort to reduce water pollution. Then
complete this sentence: _______________________ help to reduce water pollution by…