Reuse of Return Flow from Wetland Paddy to Supplement Industrial Water Needs
Resource
Irrigation and Drainage.
Journal
Irrigation and Drainage
Pages
345-355
Date Issued
2009-05
Date
2009-05
Author(s)
Chang, Y.-C.
Lin, W.-T.
Hsu, N.S.
Kan, C.-E.
Abstract
Abstract In this paper a water reuse system in wetland paddy was simulated to supply water for industry. A two‐tank model was employed to represent the return flow of the wetland paddy. Historical data were used for parameter estimation and model verification. The simulation results show that the return flow from wetland paddy has potential benefit for water reuse. Under a series of water management strategies, about 87% of the total volume of return flow can supplement industrial water needs which decreases local water needs by about 22.4%. The strategies include increasing the volume of return flow through deepwater management practices, stabilizing the reuse of return flow in the purification unit through the regulated large‐capacity pond downstream, and harmonizing the supply‐and‐demand gap through a suitable cultivated paddy scale of the crop rotation pattern. Apart from meeting water needs at peak demand periods, the reuse of return flow is a quick‐response water supply solution. Accompanied by the series of water management strategies, water reliability and crop security can be achieved at the same time. Copyright © 2009 John Wiley & Sons, Ltd.
Type
journal article