Flashcards in Water Pollution Deck (18):
How many of China’s cities have no sewage treatment facilities
What causes water pollution
Polluting industries which dispose chemical waste into rivers and lakes which local governments have failed to crack down.
980 million people drink party polluted water dangerous levels of arsenic, fluorine and sulfates
190 million people in China fall ill every year and 60,000 people die from diseases caused by water pollution l
How many of China’s lakes suffer from eutrophication
To treat just half amount of sewage
Gov need to invest in 10000 treatment facilities.
Goals included controlling pollutants and to improve quality of drinking water. Over 93% of urban drinking water sources shall reach Grade 3 or more by 2020
How much water is unfit for any purpose
Essentially functionless in Beijing
How much sewage does China produce everyday
3.5 million tons
How much sewage is released into rivers without being treated
90% of household sewage
And 1/3 of industrial waste water
How many people drink contaminated water
More than 600 million drink human and animal waste contaminated water
Pressure on water
China has 20% of worlds pollution but only 7% of worlds fresh water
Why is north drier than south
North contains 2 deserts. Increasingly arid and suffers from water shortages, cuz in the south, the land heats up and draws in moist air from over the. South China Sea. One meeting mountains, and cooler air masses, rain falls as part of the summer monsoon
80% of water is in southern China.
South to north Water transfer project
To transfer water from Yangtze River in the south to the north as 1/2 of the pop. And 2/3 of farmland is in the north with only 20% of water. 3 routes = Eastern, central, western
Planned for completion in 2050
Move 44.8 billion cubic metres of fresh water from south to north.
Estimated to cost $62 billion
Why is demand for water increasing in China
Urbanisation and rapidly increasing pop. And increasing demand for coal. Large amount of water used to process coal.
Conflicts due to water demand
Increase north and south divide
Domestic / cultural divide.
Might influence migration.
3 gorges dam protects how many people from floods
200 million people
And reduces frequency of major downstream flooding from once every 10 years to once every 100.