侯文祥2006-07-252018-06-292006-07-252018-06-292001http://ntur.lib.ntu.edu.tw//handle/246246/10695因應循環春殖用水有效再利用目標，針對養殖水中生成殘留的因態及液態氮有無機物有效處理予以去除，以避免持續累積於循環水系統內，造成系統負荷增加，設備處理效率降低的狀況。 本研究完成以過濾水力及逆洗水力學理論為基礎的自動逆洗生物濾床設計概念，可減低人為管理方式易造成系統內因逆洗期距不易保握而影響水質穩定的困擾。 在保持去除效率於65~80 ％氣氣物質穩定狀態時，可避免因濾床內生物膜自然剝落產生去除效率急遽變化現象產生，確定以水頭損失速度變化可作為評估用參數。本研究同時比較固型物與固液態氛氣物質的濾除效率，以鰻池的中小粒徑物性及固態氣氮為主的物質型態為例，三種濾材約有其適用性，其試驗設計及資料分析方法可被應用於不同淡海水、不同生物種類春殖條件需求做操作調整設計用。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.application/pdf247708 bytesapplication/pdfzh-TW國立臺灣大學生物環境系統工程學系暨研究所過濾水力學逆洗水力學生物濾床循環水養殖除氨效率固型物去除循環水春殖filtration hydraulicbackwashing hydraulicbiofilterammonia removalPartical removalrecycled water culturereporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/10695/1/892313B002240.pdf