本研究主要可分成兩大階段:第一階段為Candida tropicalis 與酵母融合
菌之特性探討,此階段研究除了解酵母融合菌與C. tropicalis 的一些特
性差異外,亦可將結果做為下一階段研究之控制條件.第二階段則根據前面
研究結果進行酵母融合菌處理含酚工業廢水之可行性研究. 研究結果發
現:在最佳分解酚之溫度32℃下,C. tropicalis 最佳分解酚之pH為6∼7.
酵母融合菌最佳分解酚之溫度為30∼32℃;而最佳分解酚之pH則為6∼7之
間.而在最佳分解酚之溫度與pH條件下,C.tropicalis 分解酚之最高濃度
為2,787mg/L;而酵母融合菌分解酚之最高濃度則為3,280mg/L.在不考慮安
全係數下,本生物處理系統欲達82年石化業放流水標準(COD=250mg/L,酚=1
mg/L),其酚體積負荷應小於1.72kg/m3-day;而最大COD體積負荷則為6.54
kg/m3-day.當COD體積負荷提高至7.45kg/m3-day,出流水COD濃度為323.9
mg/L,可是此時出流水酚濃度仍低於1mg/L,顯見出流水COD濃度偏高是因為
不易被分解的非酚有機物造成.

There were two major stages in this study. In the first stage
the characteristics of both Candida tropicalis and yeast fusant
were studied, the difference between them examined. The results
from this stage were then used as the controlling parameters in
next stage, in which the feasibility of using yeast fusant in
treating industrial phenolic wastewater was investigated. The
results show that, at the optimal temperature and pH for
degrading phemol with C. tropicalis was 32℃ and 6∼7,
respectively. Similarly, for degarding phenol with yeast fusant,
the optimal temperature and pH were, respectively, 30∼32℃, and
6∼7. Under these optimal conditions, the highest concentrations
of phenol degraded by C.tropicalis and by yeast fusant were
2,787 mg/L and 3,280 mg/L, respectively. If the safety factor is
not considered, to meet the 1993 standard of effluent
concentration in petrochemical industry (R.O.C. EPA, COD=250 mg/
L, phenol=2 mg/L), the phenol volumetric loading in this
biological treatment system should be lower than 1.72 kg/m3-day,
and the COD volumetric loading lower than 6.54kg/m3-day.When the
COD volumetric loading was raised to 7.45kg/m3-day, the effluent
COD concentration was 323.9mg/L. However, at the same time, the
effluent phenol concentration remained lower than 1mg/L. This
implies that some non-phenol organics could not be easily
degarded, causing the effluent COD concentration to be higher
than the normal level.