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Pakistan Journal of Biological Sciences
  Year: 2006 | Volume: 9 | Issue: 9 | Page No.: 1660-1668
DOI: 10.3923/pjbs.2006.1660.1668
Effect of Chlorination Treatment on Gram Negative Bacterial Composition of Recycled Wastewater
Khaled Khleifat, Muayad Abboud , Waed Al-Shamayleh , Anwar Jiries and Khaled A Tarawneh

Abstract:
In order to assess the quality of recovered wastewater from the treatment plant of Mutah University, analysis was performed on samples collected from influent, polishing pool, chlorination tank and the ultimately disposal site at the university campus. In this assessment following parameters were used: temperature, BOD5, COD, effect of chlorination treatment, total bacterial counts (TBC), type of bacterial species isolated and the development of antibiotic-resistant bacteria during the treatment. Though BOD5 and COD values of treated water were within the acceptable range of Jordanian standards, the bacterial counts suggested that the efficiency of applied chlorination treatment was inconsistent. This discrepancy was particularly noticed on the water sample collected from polishing pool. Chlorine treatment of wastewater was not an efficient disinfectant method, besides it`s potential to promote the production of antibiotic resistant bacteria. Some of the coliform species isolated from influent and effluent samples were found to be chlorine resistant. Such resistance seams to be species specific. Also an unexpected bacterial growth profile was observed where the total bacterial counts on some selective media were higher than the counts detected on enriched media. A re-evaluation for the current method of wastewater treatment is recommended.
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How to cite this article:

Khaled Khleifat, Muayad Abboud , Waed Al-Shamayleh , Anwar Jiries and Khaled A Tarawneh , 2006. Effect of Chlorination Treatment on Gram Negative Bacterial Composition of Recycled Wastewater. Pakistan Journal of Biological Sciences, 9: 1660-1668.

DOI: 10.3923/pjbs.2006.1660.1668

URL: https://scialert.net/abstract/?doi=pjbs.2006.1660.1668

 
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