Influence of iron concentration on activated sludge performance in MBR

doi:10.11894/1005-829x.2010.30(10).48

Abstract

Abstract:

Through analyzing the influence of bio-ferric content on activated sludge performance in MBR,the results showed:sludge dehydrogenase activity ascended along with bio-ferric content augments in sludge which the influence of bio-ferric content in supernatant was contrary,while the influence of bio-ferric content on SOUR was contrary to that on dehydrogenase activity.It was due to sludge content increment and sludge flocculus largened which influenced DO and substrate diffused from reactor mixture into flocculus interior that resulted in oxygen insufficiency in sludge interior,so the oxygen uptake activity of microorganism decrease as well.Sludge SOUR ascended along with bio-ferric content augment in supernatant that was due to sludge performance deterioration because of iron ion augment which resulted in bio-ferric flocculus deflocculation,sludge particle smaller and DO ascending that made sludge SOUR rised,so appropriate addition of bio-ferric could make sludge performance optimal

Key words: bio-ferric, membrane biological reactor, activated sludge

摘要：

通过分析膜生物反应器中铁含量对活性污泥性能的影响,得知在一定条件下,随着污泥中铁含量的升高,污泥的脱氢酶活性随之上升,上清液含铁量对污泥脱氢酶活性的影响跟污泥中含铁量影响相反;污泥含铁量对污泥比耗氧速率的影响与对脱氢酶活性的影响相反,其原因在于污泥浓度增加及污泥絮体变大影响了溶解氧和基质从反应器混合液向絮体内部的扩散,导致污泥内部氧气不足,从而使微生物的耗氧活性随之降低;随着上清液中铁含量的增加,污泥比耗氧速率随之升高,上清液中铁离子浓度的增高会使生物铁污泥性能劣化,导致生物铁污泥絮体的解絮,污泥颗粒变小,污泥内部溶解氧上升,从而使污泥耗氧活性增高,因此合理投加一定量的生物铁才能使污泥性能达到最佳。

关键词: 生物铁, 膜生物反应器, 活性污泥

CLC Number:

X703
TQ028

Ji Shifeng. Influence of iron concentration on activated sludge performance in MBR[J]. INDUSTRIAL WATER TREATMENT, 2010, 30(10): 48-51.

冀世锋. 膜生物反应器中铁含量对活性污泥性能的影响[J]. 工业水处理, 2010, 30(10): 48-51.

/ / Recommend / Download Citations

URL: https://www.iwt.cn/EN/10.11894/1005-829x.2010.30(10).48

https://www.iwt.cn/EN/Y2010/V30/I10/48

References

[1] 刘锐,黄霞,汪诚文,等.一体式膜-生物反应器长期运行中的膜污染控制[J].环境科学,2000,21(2):58-61.
[2] 郑晓英,操家顺,王惠民.UBF生物铁反应器处理高浓度印染废水试验研究[J].河海大学学报:自然科学版,2005,33(1):52-54.
[3] 杨静,王锦,于小霞.生物铁膜生物反应器(SMBR)处理生活污水的试验研究(J].江苏环境科技,2008,21(2):26-28.
[4] 张永宝,姜佩华,冀世锋,等.投加氢氧化铁对膜生物反应器性能的改善[J].给水排水,2004,30(7):46-49.
[5] 邹海燕,奚旦立.生物铁法-SMBR性能的研究[J].环境科学,2005,26(6):65-70.
[6] 王方园,盛贻林.生物铁强化活性污泥法处理不同性质企业联片废水[J].工业水处理,2006,26(7):86-88.
[7] 吴少林,李明俊,万诗贵,等.UV/H2O2草酸铁处理垃圾渗滤液的研究[J].环境科学研究,2003,16(3):41-43.
[8] 程汉林,林晓生,自明超,等.零价铁强化活性污泥法处理高浓度中药废水试验研究[J].给水排水,2004,30(6):52-55.
[9] Philips S,Rabaey K,Veratraete W.Impact of iron salts on actirated sludge and interaction with nitrite or nitrate[J].Biotesource Technology,2003,88(3):229-239.
[10] Agridiotis V,Forster C F,Carliell-Maxquet C.Addition of Al and Fe salts during treatment of paper mill effiuents to improve activated sludge settlement characteristics[J].Bioresource Technology,2007,98(15):2926-2934.
[11] 冀世锋,奚旦立.生物铁法-膜生物反应器中膜过滤特性的研究[J].膜科学与技术,2008,28(4);19-25.
[12] Kim T H,Park C,Shin E B,et al.Decolorization of disperae and reactive dye solutions using ferric chloride[J].Desalination,2004,161(1):49-58.
[13] Andrianisa H A,Ito A,Sasaki A,et al.Biotransformantion of arsenic species by activated sludge and removal of bio-oxidised arsenate from wastewater by coagulation with ferric chloride[J].Water Research,2008,42:4809-4817.
[14] 俞毓馨,吴国庆,孟宪庭,等.环境工程微生物检验手册[M].北京:中国环境科学出版社,1990:163-165.
[15] 国家环境保护总局.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:180.
[16] 胡家骏,周群英.环境工程微生物学[M].北京:高等教育出版社,1988:72.
[17] 桂萍.一体式膜生物反应器污水处理特性及膜污染机理研究[D].北京:清华大学,1999

Please choose a citation manager

Content to export