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題 名 | The Effects of Salt Shock on the Performance of a Submerged Biofilter in the Recirculating Eel Culture System=鹽度對超集約式養鰻系統中沉浸式生物濾床去除氨氮效率之影響研究 |
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作 者 | 曾國鋒; 邱建華; 徐崇仁; 周賢鏘; 廖一久; | 書刊名 | 臺灣水產學會刊 |
卷 期 | 24:1 1997.03[民86.03] |
頁 次 | 頁63-73 |
分類號 | 439.5 |
關鍵詞 | 循環水養殖系統; 生物濾床; 氨氮去除; 鹽度效應; 鰻魚養殖; Recirculating system; Biofilter; Ammonia removal; Salt effect; Eel culture; |
語 文 | 英文(English) |
中文摘要 | Eels cultured in recirculating system are normally treated with saline water, periodically, to control the diseases. In this study, biofilters of experimental scale were operated in parallel with a recirculating eel culture sytem to investigate the effects of high salinity on the ability of ammonia removal. The biofilters were operated with influent of pH 8.0, hydraulic retention time 50 min and salinity of 5, 10 and 15 ppt. Results showed that ratio of ammonia-N removal decreased from 91% to minimum levels of 8.4, 6.2 and 5.4% for various duration times. After the treatment shock, the ammonia removal ratio began to recover. Salt loading stopped and the influent changed back to fresh water. The ammonia-N removal ratio recovered to a normal level of approximately 92 % at about 12-14 days. the recover rate of ammonia-N removal was best at the level of 5 ppt salinity. |
英文摘要 | 超集約循環水養鰻系統操作時,為了控制鰻魚之病害,常定基施予鹽浴。本研究 係以一小型生物濾床與一超集約循環水養鰻系統並聯操作,以探討鹽浴時所採用之鹽度對系 統中生物濾床去除氨氮效率之影響。 生物濾床進流水之 pH 值為 8.0、水力停留時間為 50 min,供試鹽度則分別為 5、10 及 15 ppt。 試驗結果顯示,當生物濾床之進流水由淡水轉 為 5、 10 及 15 ppt 之鹽水時, 其氨氮去除率由 91 % 左右逐漸下降, 並於試驗開始後 22.5、20.0 及 15.8 hrs 分別降至最低點後,進流水回復為淡水,結果再經 12-14 天後, 生物濾床之氨氮去除率可回復為正常值之 92% 左右。氨氮去除率之回復以鹽度 5 ppt 試驗 組為最快,其次分別為 10 ppt 及 15 ppt 試驗組。 |
本系統中英文摘要資訊取自各篇刊載內容。