工业水处理 ›› 2012, Vol. 32 ›› Issue (3): 19-22. doi: 10.11894/1005-829x.2012.32(3).19

• 试验研究 • 上一篇    下一篇

改良氧化沟活性污泥ORP的调控及对磷吸收/释放的影响

唐玉朝1, 伍昌年1, 杨慧1,2, 王茹1,3, 汤利华1,4, 黄健1   

  1. 1. 安徽建筑工业学院水污染控制与废水资源化实验室, 安徽合肥 230022;
    2. 南京理工大学环境科学与工程学院, 江苏南京 210094;
    3. 合肥工业大学资源与环境工程学院, 安徽合肥 230009;
    4. 中国科学技术大学化学与材料科学学院, 安徽合肥 230026
  • 收稿日期:2011-10-27 出版日期:2012-03-20 发布日期:2012-03-19
  • 作者简介:唐玉朝(1975-),2008年毕业于中国科学技术大学,博士,副教授.电话:0551-3828122,E-mail:tangyc@aiai.edu.cn.
  • 基金资助:

    国家水体污染控制与治理科技重大专项(2008ZX07316-001,2008ZX07316-002);安徽省优秀青年科技基金(10040606Y29)资助

Regulation and control of oxidation reduction potential(ORP) of the activated sludge of modified Carrousel oxidation ditch and its influence on phosphorus absorption/release

Tang Yuchao1, Wu Changnian1, Yang Hui1,2, Wang Ru1,3, Tang Lihua1,4, Huang Jian1   

  1. 1. Laboratory of Water Pollution Control and Wastewater Reuse, Anhui University of Architecture, Hefei 230022, China;
    2. School of Environmental Science and Engineering, Nanjing University of Science&Technology, Nanjing 210094, China;
    3. School of Environmental and Resource Engineering, Hefei University of Technology, Hefei 230009, China;
    4. School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
  • Received:2011-10-27 Online:2012-03-20 Published:2012-03-19

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摘要：

对改良的Carrousel氧化沟活性污泥的氧化还原电位(ORP)变化进行了研究,结果表明,在非严格厌氧状态下磷难以释放,同时ORP也不会降低。在外加有机物且厌氧的条件下,新鲜污泥的ORP会明显降低,一般可以达到-80～-150 mV,且存在显著的磷释放,ORP降低的程度与有机物的浓度和种类无明显关系。微生物活性降低后,外加挥发性脂肪酸,ORP不会显著降低,说明对于EBPR系统来说,ORP的高低取决于微生物厌氧代谢的速率。

关键词: 氧化沟, 活性污泥, 氧化还原电位, 磷

Abstract:

The changes of oxidation reduction potential(ORP) of the activated sludge of modified Carrousel oxidation ditch in the presence of organics have been studied.The results show that phosphorus in non-stringent anaerobic state is hard to be released.At the same time,ORP cannot be decreased,either.With externally added organics and under anaerobic condition,the ORP of fresh sludge can be decreased obviously,usually reaching-80——150 mV,and phosphorus is released remarkably.The ORP decreased level does not have obvious relationship with the concentration and variety of organics.After the micro-organisms'activity gets lower and volatile fatty acid is added externally,ORP cannot be decreased,either.It indicates that as far as the EBPR system is concerned,the level of ORP,either high or low,depends on the velocity of anaerobic metabolism of micro-organisms.

Key words: oxidation ditch, activated sludge, oxidation reduction potential, phosphorus

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