Optimization Design of Closed-loop Supply Chain Based on MILP Model

Along with the rapid development of social economy, resource crisis and environmental pollution problems are getting more and more serious, which impel the recycle and reuse of resource to obtain the unprecedented attention. It requires the manufacturing enterprises implement closed-loop supply chain management, realizing closed-loop flowing of materials in the supply chain while reducing resources consumption as well as waste emissions. The re-manufacturing closed-loop supply chain network optimization problem is discussed specially, and its general mixed integer programming mathematical model is put out to realize the optimal decision-making of multi-facility point location and the optimal flow distribution, and the mix integer programming method is chosen to solve the model. with the aid of the Lingo8.0 software, the enterprise living example model is optimization solved, which proves the feasibility of the model, and provides the theory instruction for the enterprises when they construct and manage closed-loop supply chain.