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http://dx.doi.org/10.5389/KSAE.2013.55.3.105

Statistics and Probability Distribution of Total Coliforms in Wastewater  

Jun, Sang Min (서울대학교 농업생명과학대학 생태조경.지역시스템공학부)
Song, Inhong (서울대학교 농업생명과학연구원)
Jeong, Han Seok (서울대학교 농업생명과학대학 생태조경.지역시스템공학부)
Kang, Moon Seong (서울대학교 농업생명과학대학 조경.지역시스템공학부, 농업생명과학연구원)
Park, Seung Woo (서울대학교 농업생명과학대학 조경.지역시스템공학부, 농업생명과학연구원)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.55, no.3, 2013 , pp. 105-111 More about this Journal
Abstract
Probability distribution of microbes in wastewater is a crucial factor to be determined for microbial risk assessment associated with its reuse. The objective of this study was to investigate probability distribution of an indicator microorganism in wastewater. Daily total coliform counts measured from nationwide wastewater treatment plants in 2010 by the Ministry of Environment were used for statistical analysis. Basic statistics and probability distributions were estimated in the three different spatial scales using the MS Excel software and FARD2006 model. Overall, wastewater from manure and livestock treatment plants demonstrated greater median coliform counts than from sewage and village treatment plants. Generalized logistic (GLO) and 2-parameter Weibull (WBU2) appeared to be the two probability distributions that fitted best for total coliform numbers in wastewater. The study results of microbial statistics and probability distributions would provide useful data for quantitative assessment of microbial risk from agricultural wastewater reuse.
Keywords
Wastewater; total coliform counts; optimal probability distribution; generalized logistic distribution; Weibull distribution;
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Times Cited By KSCI : 6  (Citation Analysis)
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