1.0 INTRODUCTION There has been a significant water crisis in various regions of the world over the last few years. Only about 3% of the water in the world is fresh; therefore there is relatively little fresh water available in some regions of the world, these regions are called arid and semi arid regions. The FAO (1987, cited in IFAD,n.d) defines arid and semi arid regions as “areas falling within the rainfall zones of 0-300 mm and 300-600 mm, respectively”. In other words, arid and semi arid regions are regions in which there is insufficient rainfall and rainfall patterns are liable to significant fluctuations. Some arid regions are in North Africa, South America, some parts of central Asia and the Middle East as well including countries …show more content…
2.2 PRODUCTION VOLUMES AND WATER QUALITY. Desalination continues to assist various countries such as Saudi Arabia in increasing their supply of freshwater to the public. In his report, Alghariani (2003) suggests that the expense of spare parts, maintenance and training costs, as well as the difficulty of some processes involved, has lead to the low production volume from desalination techniques, however, Lisa Henthorne of the International Desalination Association, claims that as of 2009, there were 14,451 desalination plants with a combined production volume of 59.9 million cubic metres per day, indicating an increase in the supply of freshwater. Although seawater desalination removes most of the contaminants in the water, and not all, it still provides means for utilizing the ocean, which is the world’s main water resource, and this continues to deliver high quality water, which is suitable for human consumption, therefore making significant contributions to the supply of water to arid regions. 3.0 ACQUIRING GROUNDWATER USING BOREHOLES AND WELLS. Groundwater, which is the water located beneath the earth’s surface in soil pore spaces and fractures of rock formations called aquifers, are seen naturally in springs and seeps. It can also be obtained artificially through various methods such as digging of wells and drilling of boreholes. 3.1 TECHNOLOGIES AND COST The drilling of boreholes requires large-scale
Groundwater is water that seeps through the ground and gets stored in aquifers. The supply of groundwater is always changing because it is constantly used and replenished. The groundwater supply replenishes and grows due to rain and snow melt and can decrease due to things like droughts and heavy usage. Depending on the type of surface of the ground as much as 20 percent of the rain and snow melt can seep into the ground or as little as 5 percent (Raymond, 1988). Areas where as much as
Today, desalination is a common process that's used in seaside cities and towns worldwide. There are more than 15,000 desalination plants around the world providing freshwater from salt and brackish water alike (Planet Green 2011). This number continues to grow as researchers work to improve the process, both in terms of cost effectiveness and energy efficiency (DSE 2011). But countries such as Australia, Israel and even the United States are continually adding desalination plants of various sorts into their water-management portfolios. The facilities are common in North Africa and the Mideast, where freshwater is scarce (Chandler 2008).
-Article 1- Ghaffour, N., M. Missimer, T., & L. Amy, G. (2013). Desalination (Technical review and evaluation of the economics of water desalination: Current and future challenges for better water supply sustainability) (Vol. 309, pp. 197-207). Thuwal.
Ocean water desalination is the process of making ocean water drinkable. Seventy-one percent of the world is covered in ocean water, and a significant number of people in the world live within thirty miles of an ocean. Despite the abundance of resources, a large portion of the energy and materials found in the ocean remains largely untouched. Desalination of ocean water is the only solution for countries with a limited availability of existing sources of drinking. Areas such as parts of the Middle East and Africa, where water is scarce, may use outside shipments of fresh water and techniques to purify the abundant ocean water in order to survive. Some areas in South America where water may be abundant, could be unsafe to drink due to the biological
Groundwater is water that seeps through the ground and gets stored underground. The supply of groundwater is always changing because it is constantly used and replenished. The groundwater supply replenishes and grows due to rain and snow melt and can decrease due to things like droughts and heavy usage. Depending on the type of surface of the ground as much as 20 percent of the rain and snow melt can seep into the ground or as little as 5 percent (Raymond, 1988). Areas where as much as 20 percent of the water can
1. There are two main sources of fresh drinking water, ground water and surface water. Ground water originates from precipitations that usually fall in the form of snow or rain. While, the surface water is also originates from precipitate that reaches the land surface and is then recharged into rivers, wetlands and lakes. Although these systems are usually reliable, in desperate time of need, a more reliable source of water is needed. The desalination plant is extremely valuable and flexible because it does not depend on rainfall. Instead, the desalination plant is the only source that relies on seawater. Using seawater in the desalination plant helps meet the community’s water needs and secures the water needs in the future. While other sources of water, such as rainwater or water from dames are not reliable enough to strictly rely
Desalination is the removal of salt and impurities from groundwater or seawater to produce fresh drinking water. Desalination is a secure water source that doesn’t depend on rainfall and has become a significant water source that has been strengthened through its decrease in production costs and related technological improvements. The process of Desalination is another means of securing Western Australia’s future water supply. Western Australia has two main plants, Perth Seawater Desalination Plant and Southern Seawater Desalination Plant, both of these plants deliver water to the Integrated Water Supply Scheme which supplies water to over 2 million people in Perth, parts of the South West, parts of the Agricultural region and the Kalgoorlie-Boulder
Due to the difficulty of receiving fresh water and the growing population; this leads to water becoming scarce in specific regions. The authors write, “While natural factors such as intermittent droughts and limited freshwater reserves can cause scarcity...” (Roudi-Fahimi, Creel, and Souza). Certain parts of Northern Africa and Southwestern Asia rain falls
Water scarcity is a problem and will be a larger problem in the future . As the earth warms , regions currently receive an adequate supply of rain . The change
“Arid and semi-arid environments, which represent a substantial portion of Earth's surface, have remained poorly studied. Yet water scarcity and salt content, changes in rainfall, flash floods, high rates of aquifer exploitation and growth of desert regions are all signs that suggest climate change and human activities are also affecting these arid and semi-arid zones” (Buis).
When examining the process of desalination there are several advantages and disadvantages of the process that need to be examined, starting with the advantages. One of the major advantages of this process according to Gude (2016) is having the option to use renewable energy for the process instead of using fossil fuels. He states this is better for our environment and there will always be access to the wind, solar, or wave energy being produced compared to our fossil fuels which already are at a risk of running out. Haddad has also stated that renewable energy resources are better for our environment compared to fossil fuels, as they reduce our carbon footprint and the risk of climate change. Another advantage that can
Today’s largest users are in the Middle East – for example, Saudi Arabia derives 50% of its municipal water from desalination and Qatar’s much smaller fresh water supply is entirely from desalination. Currently under construction in Kuwait is a power plant-desalination combined facility that will produce 1.5 GWe and 486,000 cubic meters of fresh water a day. It is scheduled for completion in 2016.
According to the United Nations Convention to Combat Desertification (1994), all arid areas distributed into three different subgoups, such as arid, semi-arid and dry sub-humid areas. In these zones the average annual precipitation and evapotranspiration. Additionaly, arid areas occupy 41% of the land on Earth and are home for more than 2 billion people. Moreover, zones of the same type exist on all continents in the world except Antarctica. Forty percent of population of Africa, South America and Asia live in arid areas; consequently arid zones dependent on the climatic conditions that are not conducive to the agriculture. A small amount and high variability of precipitation patterns pose serious problems to
We realize that extracting from groundwater has advantages as well as disadvantage, in order to provide advantages and disadvantages we first need to know what the meaning of groundwater. Groundwater which is known as aquifer is water that satiates the crevices and openings of rocks and residues that is positioned below the surface of the ground. A mask amount of the groundwater is protected because it is underground, therefore leaving it purely clean and exempt from the pollution on the earth. Now that the significance of groundwater has been stated, the advantages and disadvantages of extracting from it can be summarized (Kreifels, 2011).
Water is the main source of life on the Earth. It is vital for normal existence and functioning of organisms. Earth is sometimes called “water planet.” But, in fact, the number of freshwater is limited. “Only about 2 percent of the planet's water is fresh.” (How much water is there on Earth?) This water is not enough even to meet daily needs of mankind. According to World Health Organization, “a lack of water to meet daily needs is a reality today for one in three people around the world.” (2009) In the Middle East the situation is especially hard. This region is thought to be one of the droughtiest places in the world, most of it’s territory is deserted. Freshwater accounts to 1 percent of the world’s supplies, while the population comes