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題 名 | Effects of Toxicant Dosage on Filamentous Growth in an Ultra-Compact Biofilm Reactor=毒物劑量對UCBR中絲狀菌生長的影響 |
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作 者 | Ong,S. L.; Ng,W. J.; Ang,Christopher E.; Lee,L. Y.; | 書刊名 | 中國環境工程學刊 |
卷 期 | 8:4 1998.12[民87.12] |
頁 次 | 頁301-307 |
分類號 | 445.463 |
關鍵詞 | 絲狀菌生長; 毒物; 形態學; 控制; UCBR; Filamentous growth; Toxicant; Morphology; Control; |
語 文 | 英文(English) |
中文摘要 | 絲狀菌在UCBR中的大量繁殖可能產生兩個主要的問題。第一,絲狀菌在懸浮固體 物上的繁殖使得懸浮固體物容易自反應槽中流失,導致反應器失效;第二,由於絲狀菌的快 速生長導致懸浮固體物凝集成塊而阻塞分離器。文獻中已發現,改變懸浮固體物濃度和水力 停留時間以增加剪力等物理控制方法並無法有效抑制絲狀菌的生長;但適量毒物的應用卻顯 示為控制絲狀菌問題的可行方法。本研究內容主要評估三種施用劑量方式的成效,包括間歇 式、衝擊式和連續式。 |
英文摘要 | Two major problems related to profuse filament growth in the UCBR have been identified. Firstly, proliferation of filaments on carriers renders the carriers susceptible to wastout from the reactor that in turn would lead to reactor failure. Secondly, clogging of the separator would occur due to rapid filamentous growth which resulting in clumping of particles. Physical methods of control such as variation of bare carrier concentration and hydraulic retention time to increase shear have been attempted. None of these methods resulted in significant reduction of filamentous growth. The application of a suitable toxicant dosage, on the other hand, was found feasible for controlling the filamentous problem. Three dosing strategies were evaluated in this study: namely, intermittent, shock and continuous. This paper presents the results obtained from the experimental studies conducted. |
本系統中英文摘要資訊取自各篇刊載內容。