Application of Gini Coefficient in Total Waste Load District Allocation for Surface-water

Abstract

The first step of total water waste load control is district allocation,which impact directly pollutant discharge permit operation.It is a key problem to settle water waste first allocation based on equity principle.The economics and nature factor of pending district are considered,and indexes are chosen to reflect regional carrying capacity of water environment and total water waste load district allocation.According to the concept of Gini coefficient which is an index to estimate equity of the income,a goal programming model is established for Gini coefficient minimum.The projects of total waste load district allocation for surface-water is proposed by optimize equation with reasonable operational rule and constraints.