华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (7): 37-41,46.

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微好氧条件下好氧颗粒污泥的培养

蓝惠霞 陈中豪 陈元彩 陈荣   

  1. 华南理工大学 制浆造纸工程国家重点实验室,广东 广州 510640
  • 收稿日期:2004-03-12 出版日期:2005-07-25 发布日期:2005-07-25
  • 通信作者: 蓝惠霞(1974-),女,博士生,主要从事废水污染控制研究 E-mail:lanhuixia@ tom.com
  • 作者简介:蓝惠霞(1974-),女,博士生,主要从事废水污染控制研究
  • 基金资助:

    广东省自然科学基金资助项目(031430);华南理工大学制浆造纸工程国家重点实验室开放基金资助项目(200335)

Cultivation of Aerobic Granular Sludge in Microaerobic Condition

Lan Hui-xia  Chen Zhong-hao  Chen Yuan-cai  Chen Rong   

  1. State Key Laboratory of Pulp and Paper Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2004-03-12 Online:2005-07-25 Published:2005-07-25
  • Contact: Lan Hui—xia(born in 1974),female,Ph.D.candidate. mainly researches on po llution control of wastewater E-mail:lanhuixia@ tom.com
  • About author:Lan Hui—xia(born in 1974),female,Ph.D.candidate. mainly researches on po llution control of wastewater
  • Supported by:

    Suppo rted by the Guangdong Provincial Natural Science Foundation(031430)and the Foundation of State Key Laboratory of Pulp and Paper Engineering,So uth China University of Technology(200335)

摘要: 在微好氧条件下(曝气槽中溶解氧量在0.2~0.7 mg/L之间)对好氧颗粒污泥的培养进行了研究.以厌氧颗粒污泥为接种污泥,考察了培养过程中厌氧污泥外观、尺寸、反应器中絮状污泥的MLSS(混合固体悬浮物)、SV(污泥体积)、SVI(污泥体积指数)和VSS(挥发性固体悬浮物),以及颗粒化污泥体积的变化.发现培养5d后,厌氧颗粒污泥完全解体,培养10d后出现新的颗粒污泥,培养40d后污泥完全颗粒化.培养成熟的颗粒污泥呈浅褐色,粒径主要集中于500~3000 m之间,SVI达18.147 mlMg,比重达1.020g/am3 ,含水率(质量分数)达95.7%,有机组分的质量分数达74.1% ,沉降速率达52 m/h,各项指标均优于普通活性污泥和常规曝气条件下培养的好氧颗粒污泥.

关键词: 微好氧条件, 好氧颗粒污泥, 培养, 颗粒化

Abstract:

Aerobic granular sludge was cultured in microaernbic condition,that is,with a dissolved oxygen (DO)content in the aeration vessel of 0.2 to 0.7 me/L.Anaerobic granules were chosen as the seed sludge.The variations in the appearance an d size of the anaerobic sludge during the cultivation were observed,an d the varia-tions in the MLSS(Mixed-Liquor Suspended Solid),SV(Sludge Volume),SVI(Sludge Volumetric Index)and VSS(Volatile Suspended Solids)of the flocculent sludge as well as in the volume of the granular sludge were also measured.It is f0und that the an aerobic gran ules are completely disaggregated after a 5-day cultivation.that new granules are formed after a 10-day cultivation,and that the sludge in the reactor is completely gran ulated after40 days.It is also shown that the mature gran ules ale san dy beige,witIl a diameter of 500 to 3000 m,a SVI value of 18.147mL/g,a specific gravity of 1.020g/cm3 ,a mass fraction of the moisture of 95.7% and a mass fraction of the organ ic components of 74.1% .thus resulting in a settling rate of 52 m/h.All these items overmatch those of the conventional activated sludge an d the aerobic granular sludge cultivated in conventional aeration.

Key words: microaerobic condition, aerobic granular sludge, cultivation, granulation