Estimation of Tianjin unconventional water for supplying ecological water to coastal estuaries
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Abstract:
With the yearly decreasing discharge into sea and the increasing contradiction between the water resources supply and demand in urban area, the amount of discharges can not meet the ecological water demand of Tianjin coastal estuaries. As a result, it is very necessary to develop unconventional water compensation to ecological water for coastal estuaries. In this paper, unconventional water resources in Tianjin were surveyed, which included seawater, rainwater and reuse water. Combined with the utilization ways of unconventional water resources in Tianjin, the water amount which could be used for supplying ecological water to coastal estuaries was estimated. The results showed that the amount of rainwater and reuse water could absolutely meet the ecological water demand of coastal estuaries. And measures for ecological water supplement in coastal estuary were put forward. This research will provide technical reference for the effective development and utilization of unconventional water in Tianjin as well as effective supplement of ecological water for coastal estuaries.