基于数学规划法的工业园区间接循环水网络优化

为解决工业园区水资源消耗高和水污染排放强度大等问题，整体优化园区水资源网络，实现水资源的高效利用是非常必要的。基于数学规划法，以园区企业间水耗、排水量和水质的差异为基础，兼顾经济和环境要素，构建了包括水源、处理单元以及水阱的水网络优化模型，形成适用于工业园区水资源间接循环利用的优化方法。以典型工业园区为研究对象，基于水网络优化模型，在园区最小新鲜水需求量目标下，比较了不同情景的新鲜水需求量、废水排放量和总费用。结果表明：采用间接循环水网络优化方案可使园区总新鲜水需求量减少24.7%，废水排放量减少40.5%，废水重复利用率提升40.5%，总费用比较适中，为486.09万元/a，具有较高的环境效益，该优化模型能够显著提升工业园区水资源利用效率。

Indirect circulating water network optimization of industrial parks based on mathematical planning method

In order to solve the problems of high water consumption and high intensity of water pollution discharge in industrial parks, it is necessary to optimize the water resources network of the parks as a whole to realize the efficient use of water resources. Based on the mathematical planning method, considering the differences in water consumption, discharge volume and water quality among the enterprises in the parks and taking into account the economic and environmental factors, a water network optimization mathematical model including water source, treatment unit and water trap was constructed to form an indirect recycling optimization method of water resources applicable to industrial parks. Based on the water network optimization model, the freshwater demand, wastewater discharge and total cost under different scenarios with the objective of minimum freshwater demand in a typical industrial park were compared. The research results showed that the adoption of the indirect recycling water network optimization scheme could reduce the total freshwater demand by 24.7%, reduce wastewater discharge by 40.5%, and increase wastewater reuse rate by 40.5%, and the total cost was moderate at 4.860 9 million yuan/a, which had high environmental benefits. The optimization model could significantly improve the efficiency of water resource utilization in industrial parks.