基于大学生服装捐赠回收中的运输路线优化——以日照大学城为例

Based on the Optimization Strategy of Transportation Route in College Students’ Clothing Donation and Recycling—A Case Study of Rizhao University Town

摘要: 由于大学生服装更新换代快，很多新衣服都作为生活垃圾处理了，既浪费资源又污染环境，但因为衣物回收成本高，服装的回收利用受到重重阻碍。本文主要讨论大学生闲置服装捐赠回收的运输路线的优化问题，以日照大学城为例，通过实地调查和线上调查了解到，由于回收箱位置分散，运输路线复杂，使得旧衣捐赠的运输成本在总成本中占有较大比重，因此，降低回收成本的重点就在于削减运输成本。本文基于服装回收的特点构造出了独立性回收运输模型，然后建立了相应的混合整数线性规划(MILP)数学模型，并采用遗传算法模型进行求解，最后将日照大学城的数据带入模型进行检验，证明了本文建立的数学模型科学、合理、可行，求解方法简便，能够有效解决服装捐赠回收运输中减少成本的问题。旧衣捐赠不仅能够培养消费者的奉献精神，而且能够树立企业的公益形象，降低企业的原材料成本，也能使使社会资源得到充分利用，从而促进社会的可持续发展。

Abstract: Due to the rapid renewal of College Students’ clothing, many new clothes are treated as household garbage, which wastes resources and pollutes the environment. However, due to the high cost, re-cycling clothing is hindered. This paper mainly discusses the optimization of transportation route of College Students’ idle clothing donation and recovery. Taking Rizhao university town as an example, through field investigation and online investigation, it is learned that the transportation cost of old clothing donation takes a large proportion in the total cost due to the scattered location of recycling boxes and the complex transportation route. Therefore, the key to reduce the recovery cost is to reduce the transportation cost. Based on the characteristics of clothing recycling, this paper constructs an independent recycling and transportation model, then establishes the corresponding mixed integer linear programming (MILP) mathematical model, and uses the genetic algorithm model to solve it. Finally, the data of Rizhao university town is brought into the model for testing, which proves that the mathematical model established in this paper is scientific, reasonable, feasible, simple and effective to solve the problem of reducing cost in the transportation of clothing donation. Old clothes donation can not only cultivate the dedication of consumers, but also establish the public image of enterprises, reduce the cost of raw materials, and make full use of social resources, so as to promote the sustainable development of society. For the donor, the donation of old clothes can make full use of resources and pass on their love. For the recipient, these clothes are like a warm sun in the cold winter, which makes the people who are in trouble feel warm. Therefore, in order to make the old clothes no longer idle and wasteful, and to make the people in trouble feel warm, let’s call on more caring people to add into the old clothes donation activities!