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Reuse of return flow from wetland paddy to supplement industrial water needs
Author(s) -
Chang YuChuan,
Lin WeiTaw,
Hsu NienSheng,
Kan ChunE.
Publication year - 2010
Publication title -
irrigation and drainage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 38
eISSN - 1531-0361
pISSN - 1531-0353
DOI - 10.1002/ird.492
Subject(s) - return flow , reuse , wetland , environmental science , water resource management , water supply , water resources , water flow , agricultural engineering , environmental engineering , hydrology (agriculture) , flow (mathematics) , engineering , waste management , ecology , mathematics , geometry , geotechnical engineering , biology
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.