Analysis And Comparisons Of Many Water Supply Alternatives For North West China

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Analysis and comparisons of several water-supply alternatives for North-west China Introduction: The world’s semi-arid and arid regions are located mainly in North Africa, the Middle East, as well as South Asia. There are also isolated arid areas in Australia, parts of South America and the southern part of North America (Clarke, 1991, p.13). In this report, the problems of arid regions in China will be studied and analysed. The reasons for choosing China as a research target are because the rapid development of industries in China, has led to increasingly serious issues of climate conditions. Overall, the arid and semi-arid regions in China are getting bigger as time moves on. According to a report (Milker), the arid rangeland of China…show more content…
Dams not only preserve water for future use but also can be used as power stations and there are other benefits (such as flood control, irrigation, electrical generation etc.) (FEMA). However, building dams involves massive financial investment from government and also a lot of displacement can occur. As a result, the cost of building dams is very high as it needs massive manpower and compensation for displacing families. Taking a dam (on Grand Coulee, Columbia river) built between USA and Canada as an example, it cost £6.5bn, it has a height of 170 metres, forming a 260 square kilometre reservoir (The guardian). 96000 people were forced to be resettled and there was a loss of some fish species. Most Indian inhabitants were not compensated for 45 years which caused a very bad feeling between government and citizens. As for the benefits, 1,400 farms have been irrigated; there is a big water source for industry and urban areas. Furthermore, huge profits have been made from hydroelectricity, which has a capacity of 6,809 megawatts of power. Overall, precise plans and calculations should be done before making the decision to build a dam. 2. Desalination Desalination refers to various types of technical processes; the aim is to remove salts from seawater (Banat). In these processes, a series of very highly technical equipment will be required, which means demands on technology for the target region. The most noticeable benefits from desalination are
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