Research on Evaluation Model of Sludge Disposal Method in Sewage Plant

2013 ◽  
Vol 368-370 ◽  
pp. 501-504
Author(s):  
Wei Zhang ◽  
Jun Zhang

In view of the selection problem of sludge disposal method in the process of sewage treatment, this paper presents main influence factors on sludge disposal method in municipal sewage treatment works and establishes the comprehensive evaluation decision model of sludge disposal method. Using the analytic hierarchy process (AHP) to analyze and evaluate sludge disposal method, the relative weights of the influencing factors are determined and the optimal sludge disposal method is obtained. The establishment of this evaluation decision model can provide a scientific basis for the reasonable selection of sludge disposal method.

2014 ◽  
Vol 596 ◽  
pp. 1056-1059
Author(s):  
Cong Jun Rao ◽  
Lei Yu

With the vigorous development of the our country higher education enterprise, the demand of materials and equipments also increased year by year in university, so the supplier selection is particularly important. In this paper, we select four prominent influence factors to establish a supplier evaluation index system, and then present a multi-objective fuzzy comprehensive evaluation decision model to select the supplier in the college materials procurement. Further, we highlight the implementation, availability, and feasibility of the fuzzy comprehensive evaluation model using a procurement decision example.


Author(s):  
Zhang Qi-yu ◽  
Liu Zeng-jin ◽  
Liu Lai-sheng ◽  
Li Na

Abstract In China, rural domestic sewage treatment has become an urgent problem to be solved to improve the rural human settlement environment. However, there is no scientific, objective, and systematic evaluation model for selecting rural domestic sewage treatment technology. Therefore, this paper mainly studies on the establishment of the evaluation system model of China's typical rural domestic sewage treatment technology and the application of technology selection. Based on the analytic hierarchy process and the life cycle method, the experts consulted and analyzed the factors affecting the evaluation of China's rural sewage treatment technology. The comprehensive evaluation index system suitable for China's rural sewage treatment technology was established based on the analysis results. Combined with the fuzzy comprehensive evaluation method, five typical rural domestic sewage treatment technologies were applied and analyzed. The results show that the comprehensive evaluation of the biofilm technology is the best at 3.5669, followed by the septic tank treatment technology and land treatment technology, which are 2.8829 and 2.8422, respectively. The case analysis verifies the applicability of the model, which can support the selection of technologies for the rural domestic sewage treatment market in China.


2013 ◽  
Vol 438-439 ◽  
pp. 1024-1027
Author(s):  
Xiao Guo Chen

The paper introduces some information about Harbin Metro line 1, makes the decision analysis on economies, environment, society and geological environment of Harbin Metro line 1 by some fuzzy comprehensive evaluation model, and gives the weight coefficients of indicators through analytic hierarchy process. The comprehensive evaluation result provides the basis for decision-makers during decision of metro projects.


2013 ◽  
Vol 805-806 ◽  
pp. 1593-1597
Author(s):  
Ze Hong Li ◽  
Xiao Dan Zhang

Combined heat and power generation is also called the heating reconstruct project, comprehensive benefit evaluation of heating reconstruction project provide a more scientific basis for project construction and project operation, strengthen scientificalness for decision-making , avoid investing blindly and improve investing returns of the project. To begin with, it is emphasize on the analysis of the project whole, and then established evaluation index system and comprehensive evaluation model based on financial and non-financial data collecting of the project. At the third, evaluating the financial feasibility, project environmental benefit and social benefit evaluation of the heating reconstruction project. Eventually, it comes to a conclusion for a validation of heating reconstruction project feasibility.


2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Li Yuan ◽  
Ming-jie Cai ◽  
Tang-yi Guo ◽  
Yu Jiang

Traffic guide signs are effective only when they are clearly recognized by drivers. Three experiments were conducted in this study. In the first, the influence factors of guide sign recognition were studied. This study investigated 11 main factors with a convenience sample of drivers from Nanjing city in China. Weights of different influence factors were obtained through analytic hierarchy process (AHP). The results showed that the setting position, occlusion degree, and character size of guide sign had the most significant influence on the guide sign recognition, while other factors were less important. In the second stage, an evaluation model of guide sign recognition was developed based on weights of different factors. Four equations were presented to calculate the comprehensive score of guide sign, and the level of recognition was divided into five grades according to the comprehensive score. At last, a typical case in Nanjing was studied to verify the rationality and reliability of the evaluation model. Results from the real application indicate that the method had good applicability and can be used by traffic engineers.


2014 ◽  
Vol 584-586 ◽  
pp. 2215-2219
Author(s):  
Yi Xuan Wang ◽  
Ying Wei Ren ◽  
Yong Heng Yao

According to the characteristics of resource allocation for engineering construction programme, the comprehensive evaluation model of resource allocation rationality for programme is established with the combination of analytic hierarchy process and fuzzy comprehensive evaluation method. The rationality of resource allocation for programme is evaluated objectively based on the assessment of correlation degree between monomer project and the programme and the evaluation of resource allocation rationality for monomer projects. And the evaluation results have been analyzed and sorted through the principle of weighted average.


2013 ◽  
Vol 683 ◽  
pp. 686-689
Author(s):  
Yang Liu ◽  
Guo Ping Cheng

Through analysing the indexs of the steel industry supply chain financing default risk, the article establishes a multi-level fuzzy comprehensive evaluation model for the steel industry supply chain financing default risk. Application examples show that the model overcomes the defect of subjective evaluation. It’s a rational and effective tool to assess the default risk of the steel industry supply chain financing.


2013 ◽  
Vol 671-674 ◽  
pp. 35-38
Author(s):  
Chun Yuan Liu ◽  
Jian Zhu Sun ◽  
Yu Liu

In this paper, taking the Zhengding new district of Shijiazhuang city as an example, we put forward to take advantages of analytic hierarchy process and rough set theory and combine them with fuzzy comprehensive evaluation method to do the quantitative analysis of suitability of the engineering geology conditions of urban construction land .It can make the evaluation more objective. This paper divides study area into the most suitable,suitable,less suitable and unsuitable,and provides a strong scientific basis for the design and planning.


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