行政院國家科學委員會補助專題研究計畫成果報告:以無閥式自動逆洗控制循環水養殖系統中生物濾床除氨能力之水力設計及試驗
Date Issued
2001
Date
2001
Author(s)
DOI
892313B002240
Abstract
For the view points of the recycled water cultural system and the mass balance managements in water environment ,this study made a valveless automatic
backwashing hydraulic design to remove a part of sludge for keeping a steadily ammonia and nitrogen removal efficiency to 65-80% on the biofilter. To use the filtration
hydraulic theory and the backwashing theory, montoring a head loss flux and cave ratio
flux on the bed filter, the backwashing cycle time series and a steadily removal efficiency could be controlled. During the filter run the accumulated floc on the filter bed slowly builds a back pressure, which cause the backwash pipe to rise. Through water quality analysis including suspended solid concentration & size distribution counting and particle/solution organic nitride concentration test and the hydraulic tests, we decided the filtration rate and period, combination and thickness of filter media. period of backwash and flow rates. Those results can applied to develop any fish culture system in water recycling reuse.
Subjects
filtration hydraulic
backwashing hydraulic
biofilter
ammonia removal
Partical removal
recycled water culture
Publisher
臺北市：國立臺灣大學生物環境系統工程學系暨研究所
Type
report
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