Multi-criterion decision making methods of river waste load allocation based on principle of equity
河流允许排污量公平分配的多准则决策方法

Equity of waste load allocation is a multifaceted concept. A polluter trends to choose different allocation rule which may result in favorable alternative while this may not be preferable to the others. It is suggested all measures of equity for which there are backers should be used in the decision making procedure of waste load allocation, and then to form a compromise scheme that all polluters prefer to accept. Two multi-criterion decision making (MCDM) methods are proposed for this purpose, which use Satisfactory Degree and Equity Distance as equity indicators, respectively. A compromise solution is determined according to the principle of maximizing the minimum value. Avoiding giving weights to the polluters, the solution is of objectivity. A case study of waste load allocation is conducted for Guangzhou City-Foshan City trans-boundary river network in Guangdong, China. The results show that the two MCDM methods have similar solutions which are equitable and reasonable. MCDM methods could provide quantitative guidance to solve trans-boundary pollution conflict and implement the policy of Total Pollutant Amount Control for water quality management.