Volume No. 9 Issue No.: 1 Page No.: 24-30 July-September 2014

 

STUDIES ON PATHOGENIC BACTERIAL STRAINS FROM SELECTED SEWAGE TREATMENT PLANTS (STPs) OF MYSORE, KARNATAKA, INDIA DURING DIFFERENT SEASONS : A COMPARATIVE APPRAISAL

 

L. Divya, G. Jessen, S. Suriyanarayanan*1 and K. Karthikeyan2

1. Department of Water and Health, JSS University, Mysore, Karnataka (INDIA)
2. Division of Coastal and Marine Ecology, Gujarat Institute of Desert Ecology, Kachchh Gujarat (INDIA)

 

Received on : November 10, 2013

 

ABSTRACT

 

To assess the microbiological characteristics of selected Sewage Treatment Plants (STPs) in Mysore city of Karnataka, India. In this study, the sewage water samples were collected in 4 different seasons viz., pre-monsoon, monsoon, post-monsoon and summer and all the collected water samples were subjected for various physico-chemical and microbiological characteristics. Some of the physico-chemical characteristics of the water samples revealed higher values even in treated waters (pH : 8.0 -8.39). When the microbial load of the treated waters were concerned, E.coli was found to be the predominant candidate in all the STPs during all the seasons which may be attributed due to the domestic effluent usage in STPs for treatment. All the other genera reported in the present study follow a similar pattern of predominance in all the STPs during all the season. Also, the incidence of the pathogenic bacteria was found to be higher especially during monsoon season which may be attributed towards the climatic factors which may have an influence for such results. As a whole, the study suggests that the treatment methods should be designed in such a way that the microbial load in such waters should be reduced to a greater extent keeping in mind the sanitation issues in the nearby areas.

 

Keywords : Pathogenic bacteria, Sewage Treatment Plant, E.coli, Comparative assessment, Seasonal changes

 

 

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