密切值法用于城市污水处理厂布局规划的研究

用密切值法作多目标决策优选，由城市污水处理厂的3个标准方式和11个家处理厂的工艺改造投资、污水厂运行成本和处理水量等11个评价指标的极端情况，组成“虚拟”的最好（长期保留）和最差（应该废除）方案，进而求出各污水处理厂（统称为样本点）与最好、最差方案的距离，计算可综合反映与最好和最差方案距离两者水平的综合参数－密切值，并根据密切值的大小进行排序。实例计算表明，密切值法与灰色局势决策法得到相似的排序结果，说明密切值法用于城市污水处理厂布局规划是切实可行的。而且密切值法不需要确定白化函数等主观参数，计算结果更客观和可靠。

Study on Layout Planning of Municipal Sewage Treatment Plants by Using Osculating Method

Eleven assessment indicators of 11 municipal sewage treatment plants and 3 Standard layouts, namely, invest for technique-improving, cost for plant runing,water-treatment volume were used to assess the layout plan-ning of 11 municipal sewage treatment plants. The best and worst samples were composed of the maximum and minimum values of assessment indexes. A comprehensive parameter, namely osculating value, taking the distances between the evaluated sample and the best or worst sample into consideration simultaneously was introduced and used to evaluate and order the layout planning of municipal sewage treatment plants.The case study showed that the osculating method presented the reliable results in agreement with the results of gery situation decision method, and the osculating method was thus suitable for comprehensive assessment of layout planning of municipal sewage treatment plants.