Research on price adjustment method of wastewater treatment PPP project under demand risk
The minimum guarantee mechanism commonly used in sewage treatment PPP projects is often considered to cause hidden debts to the government,requiring rectification during the audit.When the actual sewage treatment demand is lower than the basic water volume,how the government can reasonably pay the corresponding costs needs to be further studied.This paper takes the form of adjusting the unit price of sewage treatment instead of the traditional settlement by directly multiplying the basic water quantity by the original unit price.Based on the evolutionary game theory,a game model between the government and social capital is constructed to analyze the dynamic evolution law of the decision of both sides,and the threshold value of social capital accepting or not accepting the adjusted unit price of sewage treatment is obtained,and the final unit price is determined according to the operation and maintenance performance appraisal coefficient.The validity of the model is verified by case analysis.The re-search shows that the price adjustment method can make the government's financial expenditure more reasonable,improve the probability of subsequent projects being stored,and promote the high-quality development of the PPP model under the premise of ensuring the sustainable development of sewage treatment enterprises.
NETL
NSTL
万方数据
维普
