APPLICATION OF SUPER EFFICIENCY DEA MODEL IN PREDICTING AVAILABLE RAINWATER IN BEIJING

The development and utilization of rainwater resources can form significant economic and environmental benefits. The prediction of rainwater utilization is an important part of the development and utilization of rain water resources. This paper studies the application of prediction technology of rainwater utilization in Beijing based on super efficiency DEA model. Based on the analysis of rainwater infiltration and rainwater reuse treatment theory, the related indexes such as rainwater runoff arc determined to predict the available amount of rainwater. The indexes are used as input indexes of super efficiency DEA model, and the available amount of rainwater is used as output indexes. The super efficiency DEA model is used to predict the available amount of rainwater. Taking Beijing as the research object, 16 districts of Beijing are selected as the decision-making units of super efficiency DEA model to predict the available amount of rainwater in Beijing. The results of case study show that the proposed method can effectively predict the available amount of rainwater in different areas of Beijing, and has better prediction performance, which can be used in the practical application of rainwater resources development and utilization.2