TY - JOUR AU - Khanum, Hamida AU - Khanam, Sharmili Shanjida AU - Sultana, Masuma AU - Uddin, Md. Hafiz AU - Dhar, Ripon Chandra AU - Islam, Md. Sirazul PY - 2012/05/13 Y2 - 2024/03/28 TI - Occurrence of Giardia in the effluents of a waste water treatment plant in Dhaka JF - Bangladesh Journal of Zoology JA - Bangladesh J. Zool. VL - 39 IS - 2 SE - Articles DO - 10.3329/bjz.v39i2.10578 UR - https://www.banglajol.info/index.php/BJZ/article/view/10578 SP - 147-156 AB - <p>The present study was designed for the qualitative and quantitative detection of <em>Giardia </em>in the Pagla Sewage Treatment Plant (PSTP) in Dhaka. The physico-chemical parameters of the sewage water were also recorded. Total 72 raw and treated samples were collected from PSTP throughout the year 2008 and these were processed with the Formol-Ether Concentration method and IMS followed by microscopy to identify <em>Giardia </em>in the sewage water. The protozoan parasite <em>Giardia </em>was abundant (2.23±1.44 × 105 cyst/l) in the sewage water dominating the sampling sites-Grit chamber (44%), Measuring chamber (34%) and Outlet lagoon (38%). A low abundance of <em>Giardia </em>in the PSTP starting from the first point to the last one indicates the waste water treatment efficiency for removal of the pathogen. A significant correlation was found for log (number of <em>Giardia </em>+1) with turbidity (r= 0.729) and TDS (r= 0.536) at 0.01level.</p><p><span>DOI:<span> </span><a href="http://dx.doi.org/10.3329/bjz.v39i2.10578">http://dx.doi.org/10.3329/bjz.v39i2.10578</a> </span></p><p>Bangladesh J. Zool. 39(2): 147-156, 2011</p> ER -