再生水灌溉利用区划研究

Area Division for Reclaimed Wastewater Irrigation in Beijing

以北京市为例,在分析区域地形地貌特征、地表水功能分区、地下水防污性能等条件的基础上,制定北京市再生水灌溉利用分区,将北京市全境划分为禁止灌溉区、控制直接灌溉区和适宜直接灌溉区,得出再生水适宜直接灌溉区农田灌溉面积为9.33万hm2,再生水灌溉利用潜力为5.6亿m3。

Reclaimed wastewater reuse is one of the most important measures to relief water shortage in china. Area division for reclaimed wastewater irrigation （RWI） is benefit to promote safe reuse. Reclaimed wastewater should be developed in the plain of Beijing in order to prevent pollutants migration and transfer, and the thickness of aquitard more than 6 meter can prevent groundwater pollution in the plain of Beijing. The whole area of Beijing is divided to three subareas, such as forbidden area, control area and suitable area for RWI. The suitable area for RWI is 93.3 million hectare,the potential reuse ability is 0.56 billion cubic meter.