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Effects of Bio-stimulant Addition on Biological Wastewater Treatment Processes  

Lee, Seockheon (Water Environment & Remediation Research Center, Korea Institute of Science and Technology)
Jung, Jin Young (Water Environment & Remediation Research Center, Korea Institute of Science and Technology)
Park, Ki Young (Department of Civil & Environmental System Engineering and iETc, Konkuk University)
Publication Information
Journal of Korean Society on Water Environment / v.21, no.4, 2005 , pp. 398-402 More about this Journal
Abstract
The enzyme Xeronine was investigated as a microbial activating substance in biological wastewater treatment processes. Xeronine as bio-stimulant was injected in the anaerobic sludge and the activated sludge treating wastewater in order to examine the effect of hidden benefits. Bio-stimulant did not show significant improvement of anaerobic treatablity. In the aerobic system, higher bio-stimulant dose condition resulted in slightly more removal of nitrogen and phosphorus. Floc aggregation and zone settling velocity as solid-liquid separation factors in activated sludge systems was enhanced by bio-stimulant. Effects of bio-stimulants injection on improvement of water quality and microbial activity did not clear in terms of normal operation conditions.
Keywords
Biological treatment; Bio-stimulant; Methane production; Microbial activity; Settleability;
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