| 氮对酵母菌-SBR系统效能及酵母形态的影响研究 |
| 摘要点击 1629 全文点击 634 投稿时间：2007-10-24 修订日期：2008-01-14 |
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| 中文关键词 酵母菌 SBR 氮 效能 细胞形态 |
| 英文关键词 yeast SBR nitrogen performance cell morphology |
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| 中文摘要 |
| 在酵母菌-SBR系统处理高含油废水中研究了氮添加对酵母细胞形态、沉降性、废水处理效果的影响及恢复能力.结果表明，氮添加量直接影响到系统中酵母菌的生物量、沉降性、pH和处理效果；氮缺乏诱发某些酵母菌菌株细胞由酵母形态向真菌丝形态转化，进而影响到酵母菌的沉降性；从系统运行效果和稳定性方面综合考虑，运行时最佳的进水BOD/N为20/1；恢复最佳氮添加能提高不同程度缺氮系统的处理效果，并可使轻度菌丝化系统快速恢复酵母形态为主，但在短期内对高度菌丝化系统的恢复效果不明显. |
| 英文摘要 |
| Effects of nitrogen on yeast cell morphology, settleability and performance of wastewater treatment were investigated in treating oil-containing wastewater by yeast-SBR system. The results show that: nitrogen supply affects directly yeast biomass, settleabilty，pH and treatment efficiency of system; the absence of nitrogen induces the transformation of certain yeast cells from single cell to hypha morphology. Based on an overall consideration of efficiency and stability of yeast-SBR system, the optimum BOD/N ratio of influent is 20/1. The optimum nitrogen supply can improve wastewater treatment efficiency of systems with different degrees of nitrogen absence and make yeast morphology become the predominant morphology for slightly mycelial system over a short time, but for severe mycelial system, the hypha morphology still keeps dominant. |
