Value Engineering approach for wastewater treatment plants
Yara Ahmed Zaki Soliman;
Abstract
The wastewater treatment services are crucial in Infrastructure project which have a great impact on the Economy of any country, especially those developing one. For example, there is about 4200 village in Egypt from which only 40% are covered by wastewater treatment services.
The objective of this study is to design an approach for selecting the proper waste water treatment plant according to different project and client conditions. The value engineering methodology is applied for this purpose. A comprehensive literature is carried out to identify the aspects of waste water treatment plant and its alternatives on the basis of design requirements, client needs and social impact, etc.
By reviewing the waste water treatment plant, different stages are required. The preliminary and primary treatment stages, it was clear that their design constant does not affect choosing of waste water treatment plant, so this study is focused on the secondary treatment stage which alternative for waste water treatment plant. In addition, the study of alternatives is limited to the low population. Seven alternatives are included in the study. They include: A1: activated sludge, A2: oxidation ditches, A3: trickling filter, A4: aerated lagoons, A5: oxidation ponds, A6: خزان التحليل المتطور(USBR), A7: compact unit (Bimex MBBR) Consequently,
A survey was conducted to identify factors impact on the selection of alternatives. A questionnaire was designed; the respondent's answers were analyzed to determine the significant factor governed by the different incomes (i.e. low, average and high income). It is worthy to mention that the questionnaire was answered by direct interviews with experienced engineers. In addition, sample size equation was applied to identify the numbers to provide a confidence level of 95% to its results. Accordingly, it was due to adopt the obtained assembled results to analyze and discuss them to identify the optimum alternative for the different income levels (i.e. low, average and high income). The questionnaire results were applied to (SPSS) and (EXEL) program to get the relative weight of the factor in relative to different incomes (low, average, high) income.
Also the data collected for the seven alternatives were applied to (EXEL) program to get the relative weight of alternatives in relative to different factors.
the relative weight of the factor in relative to different incomes ( low, average, high) income and the relative weight of alternatives in relative to different factors were applied to (EXEL) program to get the best alternative for different incomes ( low, average, high) and we found that: We found that the optimum alternative for low income is (USBR), the optimum alternative for the average income also (USBR), and the optimum alternative for high income is compact unit (Bimex MBBR).
The objective of this study is to design an approach for selecting the proper waste water treatment plant according to different project and client conditions. The value engineering methodology is applied for this purpose. A comprehensive literature is carried out to identify the aspects of waste water treatment plant and its alternatives on the basis of design requirements, client needs and social impact, etc.
By reviewing the waste water treatment plant, different stages are required. The preliminary and primary treatment stages, it was clear that their design constant does not affect choosing of waste water treatment plant, so this study is focused on the secondary treatment stage which alternative for waste water treatment plant. In addition, the study of alternatives is limited to the low population. Seven alternatives are included in the study. They include: A1: activated sludge, A2: oxidation ditches, A3: trickling filter, A4: aerated lagoons, A5: oxidation ponds, A6: خزان التحليل المتطور(USBR), A7: compact unit (Bimex MBBR) Consequently,
A survey was conducted to identify factors impact on the selection of alternatives. A questionnaire was designed; the respondent's answers were analyzed to determine the significant factor governed by the different incomes (i.e. low, average and high income). It is worthy to mention that the questionnaire was answered by direct interviews with experienced engineers. In addition, sample size equation was applied to identify the numbers to provide a confidence level of 95% to its results. Accordingly, it was due to adopt the obtained assembled results to analyze and discuss them to identify the optimum alternative for the different income levels (i.e. low, average and high income). The questionnaire results were applied to (SPSS) and (EXEL) program to get the relative weight of the factor in relative to different incomes (low, average, high) income.
Also the data collected for the seven alternatives were applied to (EXEL) program to get the relative weight of alternatives in relative to different factors.
the relative weight of the factor in relative to different incomes ( low, average, high) income and the relative weight of alternatives in relative to different factors were applied to (EXEL) program to get the best alternative for different incomes ( low, average, high) and we found that: We found that the optimum alternative for low income is (USBR), the optimum alternative for the average income also (USBR), and the optimum alternative for high income is compact unit (Bimex MBBR).
Other data
| Title | Value Engineering approach for wastewater treatment plants | Other Titles | تطبيق نهج هندسة القيمة علي محطات معالجة الصرف الصحي | Authors | Yara Ahmed Zaki Soliman | Issue Date | 2017 |
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