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Contributory pattern of paper mill effluents on the population and distribution of enteric pathogens in Owerrinta River, Eastern Nigeria

Author(s): Chinedu Emeka Ihejirika 1* , Jude Nnama Ogbulie 2 , Onyenonachi Charity Ihejirika 3 , Catherine Ogechi Azuwike 4 , Ijeoma Joy Ibe 5

Journal: International Journal of Biosciences
ISSN 2220-6655

Volume: 1;
Issue: 4;
Start page: 74;
Date: 2011;
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Keywords: Owerrinta River | effluents | bacterial pathogens | occurrence and drinking water.

Wastewater discharge into freshwaters is a major source of pathogens. Relationship between bacterial pathogens in 3 paper mill effluents and recipient Owerrinta River was determined under standard microbiological analysis. The THBC of effluents and River ranged from 1.8 X 105 -7.2 X 106cfu/ml and 2.0 X 103 – 5.5 X 104 cfu/ml while the TCBC ranged from 3.1 X104 – 8.8 X 104cfu/ml and 1.0 X 103 – 2.0 X 104cfu/ml respectively. Trend in counts for effluents within samples was: Effluent I > Effluent – II > Effluent – III while within river samples was B > C >A. Isolates occurred thus: Escherichia coli (100%), Klebsiella spp. (83.3%), Shigella spp. (66.7%), Salmonellaspp. (83.3%), Proteus spp. (33.3%), Pseudomonas spp. (83.3%), Staphylococcus spp. (66.7%), Bacillus spp. (100%), and Citrobacter spp. (11.1%). The effluents contributed to the bacterial load and presence of pathogens, and the counts were above established limits for drinking water.

Tango Jona
Tangokurs Rapperswil-Jona

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