熵权TOPSIS法在屠宰行业污水处理优选中的应用

The Application of Entropy Weight TOPSIS Method to the Optimization of Wastewater Treatment Technology in Livestock and Poultry Slaughtered Plant

目的在畜禽屠宰行业的水污染治理技术中探求高效低耗的最优工艺.方法采用熵权TOPSIS方法,建立其畜禽屠宰行业污水处理工艺的评估模型.利用畜禽屠宰行业的3种常用水污染治理技术,在细致分析工业企业污水处理工艺现状的基础上确定评价指标体系,用评价指标值建立初始矩阵并标准化,应用熵权法计算确定每一个指标的权重并确定加权规范阵,定出加权规范阵的理想解与负理想解后,计算各处理工艺与理想工艺和负理想工艺的距离,获得各工艺与理想工艺的贴近度并排定优劣次序,最后择优选择.结果所选择的三个污水处理工艺分别为:隔油池-气浮-A/O-斜板沉淀、格栅→隔油池→混合曝气池→沉淀→厌氧-好氧→过滤→消毒、气浮-兼氧-曝气-斜板沉淀-过滤.熵权TOPSIS法计算的贴近度分别为:0.010 4、0.498 8、0.417 5,适合畜禽屠宰行业的污水处理工艺流程中.第二种工艺最好,第一种工艺较差.结论熵权TOPSIS法应用于污水处理技术评估中灵活简便,科学客观,因此适用于污水处理技术评估.

The paper aims to find the best wastewater pollution control technology with high efficiency and low energy consumption in the livestock and poultry slaughtered industry. Using the method of entropy weight TOPSIS, build the estimate model of wastewater treatment technology for the livestock and poultry slaughtered industry. Selected three common water pollution control technologies in the livestock and poultry slaughtered industry; determined the evaluation index system on the basis of a detailed analysis of the industrial enterprises sewage treatment status of each process;established an initial matrix with the evaluation index and standardization;calculated and determined the weight of each index with the entropy weight methodand determined the weighted standard array. When the ideal solution and the negative ideal solution of the weighted standard arrays are determined, the distance of treatment process between ideal process and negative ideal process is calculated, and the close degree of the process and ideal process is attained, and the order of quality scheduled, and finally the best. Selected three sewage treatment technologies are：oil separator-floating-A/O-inclined plate precipitation, griUe-oil separator → mixed aeration pool →sediment →anaerobicaerobic →filter →disinfect, floating-anoxic-aeration-inclined plate precipitation-filter. The close degree calculated by the entropy weight TOPSIS is： 0. 0104,0. 4988,0. 4175, separately, in the sewage treatment process suited for the livestock and poultry slaughtered industry. The second method is the best, the first is the worst. Entropy weight TOPSIS method used in the wastewater treatment technology assessment is flexible, scientific objective, therefore is suitable to apply to sewage treatment technology assessment.