The effect of zeolite addition on floc in activated sludge process 


Vol. 7,  No. 1, pp. 35-42, Mar.  2001


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  Abstract

This study was performed to evaluate the effect of zeolite addition on biofloc in aictvated sludge process. Two units were compared each other, in which one was operated as control unit (CU) and the other was managed by adding zeolite into aeration basin to sustain 4,000 mg/l (ZU). It was observed that flocs of both units were enduringly increased in medium size by extending SRT (Solid Retention Time), although their effect size of ZU was smaller than theirs of CU. Zeolite application excessively improved sludge settling property and ZU presented sludge settling velocity of 3.4 to 11 m/h regardless of SRT variation. The sludge volume index (SVI) was in the range of 50 and 108 ml/g. Conversely, the sludge settling velocity of CU seriously depended on SRT increase, and sludge sedimentation was not achieved at a 40 days of SRT due to Sphaerotilus appeared predominantly in reactor

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  Cite this article

[IEEE Style]

L. HS, P. SJ, Y. TI, "The effect of zeolite addition on floc in activated sludge process," Clean Technology, vol. 7, no. 1, pp. 35-42, 2001. DOI: .

[ACM Style]

Lee HS, Park SJ, and Yoon TI. 2001. The effect of zeolite addition on floc in activated sludge process. Clean Technology, 7, 1, (2001), 35-42. DOI: .

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

한국연구재단 등재학술지