Study On Technologies And Problems Of Urban Wastewater Recycling

Water is indispensable for human's survival and development. Water shortage and its pollution have became one of restraining factors to economic and social development. Reclaimed water plays an important role in urban water supply, which is used in domestic, industrial and environmental sectors.In this paper, ShiJiaXingCheng community (Xi'An, China) and campus waste reuse projects were analyzed, for example waterbudget, water quality and treatment process. The economic benefit of reclaimed water reuse in urban landscaping and other municipal purposes was given deep researches. ShiJiaXingCheng community water reuse facilities for landscaping saved more than 330,000 yuan for the community annually, while a campus waste reuse project saved 587,000 yuan. Further calculations estimated that if the Xi'An municipality make a plan to build water reuse system for communities and schools for, which could save nearly a billion dollars for the government annually and reduce the city's water supply shortage. The saved money would help the government establish facilities for reclaimed water for more huge economic benefits. Finally, based on the economic benefits of the water system analysis, the paper presented the current restricting factors to our water system in the development of the main problems and a number of recommendations to these problems. These research could lay a foundation for the water reuse industry.