A Summary Of A Possibility Study Of The Use Of Recycled Water In Tianjin Municipality

Recycled water is a useful water to meet the need of certain usage after polluted water is proper treated to reach a related water quality goal. Compared with interbasin water diversion and seawater desalination, the recycled water has an obvious advantage. It is an effective way to save water, reduce water pollution,improve ecoenvironment, relieve the contradiction between water supply and demand, and promote the urban sustainable economic and social development.Tianjin, an important industrial city, economic center and international port city in north China, is a region scarce of water resources. It is a pressing task for Tianjin water conservancy to fully use recycled water resources to keep up the sustainable economic and social development, and improve ecoenvironment for the city. The essay put forward a way of the use of recycled water and its countermeasures after the analyses of the supply and demand of water resources and possibility study of the utilization of recycled water in the city is made. Following is the main contents and results of the study.First: the analysis of the situation between the supply and demand of the water resources in the city. The study shows while Tianjin is scarce of water resources and its uneven distribution, the supply of water in urban areas has been greatly improved and guaranteed, however, the supply of water for agriculture and ecoenvironment is hard to meet the growing need, so water shortage has been continued.Second: the necessity of utilizing recycled water for the city. The implementation of the reuse of recycled water can lessen the shortage of water resources. It is a powerful method to “tap water resources.” The reuse of recycled water can save limited water resources, use large quantities of recycled sewage, reduce the discharge of wasted water and in the final analysis, make a bit to “reduce the discharge of carbon dioxide.”Third: the possibility study of the use of recycled water in the city. According to related standard and regulations, the essay is made in accordance with the characteristics and realities of the use of wasted water after recycling, to guarantee the safety and liability of the reuse of recycled water. Different water quality is specified in the use for agriculture, forestry, animal husbandry and fishery and urban garden watering, and industrial use, as well as the supply of water resources.Fourth: the methods and countermeasures for the use of recycled water in the city.The essay has given specific methods for different treatment of waste water, and engineering management, water quality test and safety survey for recycled water.And it also put forward countermeasures for the development of water recycling in nine specific aspects including putting water recycling into a strategic position and building up a mul.