Selection of advanced wastewater treatment process for pulp and paper industry based on the fuzzy analytical hierarchy process methods
运用模糊层次分析法优选制浆造纸废水深度处理方案

The best choice of advanced wastewater treatment (AWT) processes for pulp and paper industry is a multi-criteria decision problem. An analysis was made on the three kinds of AWT processes: coagulation sedimentation/flotation and filtration, Fenton method and ecological treatment by establishment of the evaluation criteria system including economic benefit, technical performance, management effect and social effect. Analytic hierarchy process was used to calculate the weights of evaluation criteria system, where technical performance ranks first among the indices followed by investment cost. In combination with fuzzy mathematics method, a comprehensive evaluation was made for the three AWT processes regarding their merits and shortcomings and the selection of the best process was determined by ranking finally. As a case study, an objective suggestion for selection of the best AWT process was put forward for two pulp and paper industries considering the expected value of the decision-makers and the actual situation of two industries.