A comparative analysis of methods to represent uncertainty in estimating the cost of constructing wastewater treatment plants

Watershed-based point sources permitting strategy and dynamic permit-trading analysis

“…It is an extension of a series of companion studies in watershed management in this region as all the relevant databases in the literature are supportive (Ning et al, 2001;Chen et al, 2002;Chang, 2002, 2004;Chen et al, 2005).…”

“…But a sound decision analysis for environmental management has to count on both technical and economic information, simultaneously. To support a cost-effective TMDL study, Chen et al (2002) conducted a comparative analysis of methods to represent uncertainty in estimating the cost of constructing wastewater treatment plants, which summarized all the existing cases of domestic and industrial wastewater treatment plants in Taiwan. On the other hand, the benefits associated with water quality improvement in the river system can be drawn directly from an assessment using the fuzzy contingent valuation (FCV) method (Chen et al, 2005).…”

“…Knowledge gained in previous studies was incorporated as an integral part of the formulation in the optimization model (Ning et al, 2001;Chen et al, 2002Chen et al, , 2005. The objective function in the optimization model was designed to minimize the costs for wastewater treatment and maximize the benefit due to in-stream water quality improvement while meeting water quality standards in all river reaches of concern.…”

Sizing an Off-stream Reservoir with Respect to Water Availability, Water Quality, and Biological Integrity

“…The derivation of such a cost function can be seen in a companion study [7]. The collected samples from the wastewater treatment plant were basically classified by the level of primary, secondary, and tertiary treatment [7]. Consequently, the cost information applied for addressing the corresponding cost term on a monthly basis in the [15][16][17] objective function of the optimization model can be amortized by making timescale consistent with the monthly pumping scheme.…”

“…The derivation of such a cost function can be seen in a companion study [7]. The collected samples from the wastewater treatment plant were basically classified by the level of primary, secondary, and tertiary treatment [7].…”