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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/22788

    標題: 三段式接觸生物反應槽處理酚廢水之生物分解特性
    Performance of three stage contact bioreactor for biodegradation of phenol
    作者: 黃政賢
    貢獻者: 環境工程與科學系
    關鍵字: 酚廢水
    phenol wastewater
    contact aeration processing
    surface loading
    Conversion rate of phenol
    日期: 2009
    上傳時間: 2010-09-10 09:09:05 (UTC+8)
    摘要: 本研究以接觸曝氣法連續進料人王合成廢水及空氣進行酚廢水之處埋,在上段式接觸生物反應槽戰體區懸吊高孔隙密度結搆的石英製生物環,並選擇來自酚醛樹脂製造廠(Syndyne Industry Company)廢水收集站污泥及四周土壤篩離出的耐酚菌種MI及M5等馴養出生物膜(兩種菌株經16S rDNA定序比對, M1為Microbaclerium arborescens,相似度96% , M5為Bacillus cereus相似度98%),在不同的操作條件下,進行模型廠操作貨驗,以探討酚廢水處理的生物分解特性。結果顯示,系統在水力停留時間一定下,接觸生物反應槽的表面積負荷越大,酚的轉化率及COD的去除率越差;相反的,表面積負荷越小,酚的轉化率及COD的去除率越佳,尤其是COD面積負荷(gCOD/m2-d)低於5.49,三段系統COD的去除率可達90%去除率,酚面積負荷(g酚/m2-d)低於2.14,酚的轉化率可達100%。本研究系統經10個試程,在穩定狀態下,生物反應速率常數值 k (20℃)介於0.027hr-1與0.279 hr-l之間。當實際處理流量Q、進流水質濃度C0 、要求的放流水質濃度Ce等已知時,可由以下以COD為基準的數學模式求得生物環接觸材料所需的表面積Ac。
    This research focused on the treatment of phenolic wastewater by the contact aeration process, which was fed with synthetic phenolic wastewater and air continuously. Quartzite glass cylinders with high-density structure were used as the biofilm canier, and were hanged and linked to t`onn a bunch of canier zone in the contact bioreactor. The selected test strains (M1 and M5) were selected hrom the mixing sludge around of`the reactor and wastewater storage in the Syndyne Industry Company (Tainan, Taiwan). The MI was 96% similar to Microbacreriun arborescens and The M5 was 96% similar to Bacillus cereus based on the sequence analysis of 16S rDNA. The effect of operating conditions on the degradation of phenol by test strains in the bioreactor was experimentally studied under various operation conditions. The result was found that the higher surface loading decreased the phenol and COD removal at the steady hydraulic retention time. It can be seen that more than 90% removal of phenol was perfomzed in the surface COD loading beyond 5.49 gCOD/m2-d. 100% conversion rate of phenol can reach was also found in the phenol surface loading lower than 2.14 g phenol/m2-d. The biological reaction rate constant value k(20℃) was ranged ftom 0.027 hr-1 to 0.279 hr-1 under the stable status by various 10 runs. The needed surface area of biofilm carrier (Ac) could be calculated with the parameters of wastewater discharge Q, inAuent water quality C0 and demand of effluent water quality Ce. The modified fonnula was shown as following:
    關聯: 嘉南學報(科技類) 35:p.273-285
    Appears in Collections:[嘉南學報] 35 期 (2009)
    [環境工程與科學系(所)] 期刊論文

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