| 酵母菌-SBR法处理油脂碱炼废水研究 |
| 摘要点击 2535 全文点击 2265 投稿时间：2007-09-12 修订日期：2007-10-24 |
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| 中文关键词 酵母菌 SBR 油脂废水 废水处理 稳定性 |
| 英文关键词 yeast SBR oil-manufacturing wastewater wastewater treatment stability |
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| 中文摘要 |
| 研究了8株酵母菌应用于序批式反应器(SBR)直接处理油脂碱炼废水的效果，并探讨了酵母菌的扩大培养方法和影响系统稳定运行的关键因素.结果表明，在不投加任何霉菌和细菌抑制剂的32 L开放体系中，6 d培养出MLSS 19 g/L、SVI 35 mL/g 的酵母菌；30 d的连续运行结果表明，在COD 9?000～23?000 mg/L、油4?500～16?000 mg/L的进水情况下，系统高效、稳定运行，COD、油去除率分别达到了86.8%～96.9%和99.5%；短期的pH冲击对系统造成的不利影响是可逆的；污泥龄对酵母菌的SVI有一定影响；长期氮缺乏会诱发某些酵母菌细胞由单细胞向菌丝形态转化，并影响到酵母菌的沉降性. |
| 英文摘要 |
| Eight yeast strains were applied to a sequencing batch reactor (SBR) to treat high-strength oil-containing wastewater. The removal performance, yeast cultivation method and key factors affecting the stability of system were discussed. The results show yeast sludge with MLSS of 19 g/L and SVI of 35 mL/g can be obtained in 6 d in an open system without any molds and bacteria inhibitor addition; In 30 d continuous wastewater treatment, COD and oil removal rate achieve 86.8％-96.9% and above 99.5% respectively under the influent conditions of the COD of 9?000-23?000 mg/L and oil of 4?500-16?000 mg/L; Short period of pH impact brings reversible effects on the system and the sludge retention time can affect the SVI of the yeast; Absence of nitrogen induces morphology conversion of some yeast cells from single cell to filamentous one and impairs the settling capability of the yeast. |
