Essay On Water Waste Water

1207 Words5 Pages
All of the water on the planet is technically recycled water. In a closed system like Earth, the water coming out of our tap has probably been through the water cycle tens of thousands of times. However, the water sent out by our utilities is always cleaned up to drinking water standards in water treatment plants prior to distribution [17]. This same drinking-quality water is used for many purposes beyond drinking, including lawn and landscape irrigation, toilet-flushing, and industrial processes. This used water then goes to a wastewater treatment plant, where it can be cleaned up again before it is released into a body of surface water. This is where the role of wastewater reclamation comes in, that is the wastewater in these treatment plants…show more content…
Two-thirds of China’s 669 cities have water shortages, more than 40 % of its rivers are severely polluted, 80 % of its lakes suffer from eutrophication and about 300 million rural residents lack access to safe drinking water [23]. According to FAO, 80 percent of the 50,000 km of major rivers in China are so degraded that they no longer support fish. The per capita availability of renewable water resources for China is about a quarter of the world average. However, water consumption per unit of Gross Domestic Product is three times of the world average because of water-intensive industrial structure, outdated technologies, low reuse rate, and wastefulness [24]. The situation of water crisis is further aggravated by the rapid development of industrialization and urbanization, as well as uneven natural water distribution [25]. The municipal wastewater reclamation rate in China was 10.47 % in 2005 and less than 10.83 % in 2010 much lower than that in developed countries (i.e. 70 to 80 %) [7,18,26]. Table 2.1 shows the status of water withdrawal, requirement, wastewater treatment and reuse by various sectors.Source: FAO (2016)

More about Essay On Water Waste Water

Open Document