Cost Analysis of Water Reclamation System
Date Issued
2011
Date
2011
Author(s)
CHIU, Yu-Shan
Abstract
Water resources issue has been greatly concerned due to global water shortage nowadays. In Taiwan, studies of wastewater reuse have been greatly developed to be alternative water resources in past decades. However, in default of the economic incentives, practical experiences and relative information of wastewater reuse, it was difficult to establish the integrated budget estimation. In this study water sources and treatment processes were classified, and Cobb-Douglas and Translog cost function analyses were performed by regression model fitting in order to establish an adequate model for industrial applications.
For secondary domestic wastewater, Cobb-Douglas cost function could be applied in process A (reverse osmosis system), B (microfiltration system) and C (sand filtration), and Translog cost function could be used in process B and C. For secondary industrial wastewater, first and second class of wastewater were defined according to the water quality. First class Cobb-Douglas and Translog cost function could not represent the model in process A, B and C. Second class, Cobb-Douglas cost function could represent the model in process B, but neither of Cobb-Douglas nor Translog cost function could represent models in process A and C.
Average cost is the response variable Cobb-Douglas cost function. When two times of water production, the average cost reduced about 10-20%, demonstrating the cost function has economies of scale. The results of analyses indicated that besides of R square value, the goodness of fitting, regression coefficient and residual analyze also need to be investigated in order to check the model adequacy.
Subjects
Cost function
Statistical tests
Water reclamation
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-100-R98541104-1.pdf
Size
23.54 KB
Format
Adobe PDF
Checksum
(MD5):87299b8a7c7f5af6d143ba4480a8ac77