周赞民 杨琼



摘要:工艺方案选择是城市污水处理厂建设中的重要步骤,它对城市污水处理厂的投资费用、运行费用、出水效果、操作管理等起着决定性作用。通常,城市污水处理厂建设工艺方案选择采用基于技术政策的评价方法(经验法)。为避免经验法存在较大的主观随意性,本文采用了多层次模糊灰色耦合模型對经验法筛选出的改良型A2/O和CASS两种备选工艺,从经济效益、技术性能和管理效益三个大的方面进行了综合评价。经过计算得到,改良型A2/O工艺的综合关联度为0.686,CASS工艺的综合关联度为 0.492,所以选定改良型A2/O工艺为该污水处理厂的最终处理工艺,与经验法的选择结果一致。
关键词:污水处理厂;工艺方案比选;改良型A2/O;多层次模糊灰色耦合模型
中图分类号:X703.1 文献标识码:A 文章编号:2095-672X(2021)01-0097-06
DOI.10.16647/j.cnki.cn15-1369/X.2021.01.016
A comparative study on selection of techniques for reconstruction and extension projects of a sewage treatment plant by multilayer illegibility ashen coupling model
Zhou Zanmin, Yang Qiong
(Zhuhai Urban Drainage Limited Company, Zhuhai Guangdong 519020, China)
Abstract:Comparasion and selection of process scheme is an important stage in the construct of urban sewage treatment plant, which decides investment cost, running cost, effluent quality, operation supervision and so on. Usually, The method which is based on technology policies (experiential method) was applied to evaluate A comparative study on selection of techniques for projects of sewage treatment plant. For avoiding that the experiential method has a existence of larger subjective casualness, The multilayer illegibility ashen coupling model was used to evaluate comprehensively the two options from three major aspects including the perspective of economic efficiency、technical performance and management effectiveness. By the calculated result, the comprehensive correlative degree of innovated A2/O process is 0.686 and that of CASS process is 0.492.Therefore, the innovated A2/O was selected for the final disposal of sewage treatment plant technology, which was consistent with the experiential method.
Key words:Sewage treatment plant; Comparative selection of techniques; Innovated A2/O; Multilayer illegibility ashen coupling model
原建设部、原国家环境保护总局和科学技术部联合发布的《城市污水处理及污染防治技术政策》对选择污水处理工艺的基本原则做了明确规定,成为了城市污水处理厂的设计过程中对于污水处理工艺方案的选择的主要技术依据。
尽管《城市污水处理及污染防治技术政策》提出的城市污水处理工艺选择的基本原则在实际中得到了较多的应用,但多是结合经验作定性的分析,而对影响方案的各种因素缺乏定量的比较评价,个人经验、知识及偏好的差异,带来较大的主观随意性。因此,如何将工艺优选工作系统化、理论化,并借助数学手段简便快速地做出正确的决策成为迫切需要解决的问题。……