Development And Utilization Strategies Of Unconventional Water Resources In Wuhan

Water resource is critical to basic resources in socio-economic sustainable development.At present,the shortage of water resources has become a bottleneck restricting China's highquality development and ecological civilization construction.Wuhan,known as "100 Lake City","River City" title,more abundant water resources.However,in recent years,the water crisis has become increasingly prominent.On the one hand,water demand continues to increase with the advancement of urbanization,facing a quantity-induced water shortage due to insufficient water supply.On the other hand,urban water pollution is serious,leading to quality-induced water shortage.The development and utilization of reclaimed water and rainwater has become a new way to solve the water crisis in Wuhan.This paper comprehensively analyzed the situation of water resources in Wuhan,and investigated the current level of utilization of unconventional water resources in Wuhan;established a system dynamics model to predict the trend of water supply and demand,demonstrated the necessity and feasibility of developing and utilizing unconventional water resources in Wuhan;finally,in response to the problems found in the investigation,referring to domestic and foreign application experience,put forward the overall policy ideas and specific application countermeasures for promoting the utilization of reclaimed water and rainwater.The main research results are as follows:Analyzed the basic situation and water situation of Wuhan city,and pointed out that Wuhan has the characteristics of abundant water resources,worrying water quality,large total available unconventional water resources,and large total water consumption.Conducted an investigation on the status quo of the development and utilization of unconventional water resources in Wuhan.According to the survey,in 2019,the amount of reclaimed water used in Wuhan was 124.452 million cubic meters,the rate of reclaimed water reuse was 14.3%,and the amount of rainwater used was 4.032 million cubic meters.Analyzed the structure of the water supply and demand system of Wuhan City,and adopted the system dynamics method,established a model to predict the future supply and demand of water in the Vensim software.Based on the historical statistical data from 2010 to2019,and the relevant planning data as the guide,maintain the current development model and trend,and simulate the trend of water supply and demand by 2030.The results of the model show that the water supply model with the current unconventional water resources utilization level cannot meet the increasing water demand year by year.By 2030,the gap between supply and demand will reach 612 million cubic meters.According to the simulation results of the system dynamics model and the actual situation of Wuhan,the necessity and feasibility of the development and utilization of unconventional water resources in Wuhan was analyzed.Through the investigation,analyzed the current level of development and utilization of unconventional water in Wuhan,and pointed out the existing problems.In response to these problems,drawing on the development and utilization experience at home and abroad,it was proposed to incorporate unconventional water resources into the urban water supply system,carry out water price reforms,clarify the management system and formulate norms and standards,establish a sound incentive mechanism,increase mandatory requirements and penalties,and strengthen popularize these six general policy ideas for unconventional water development and utilization.It also put forward specific application countermeasures for reclaimed water reuse and rainwater utilization,which provided a reference for Wuhan to promote the use of unconventional water resources.