AAU-ETD AAU-ETD
 

Addis Ababa University Libraries Electronic Thesis and Dissertations: AAU-ETD! >
Faculty of Science >
Thesis - Environmental Sciences >

Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/3386

Title: COMPARISON OF THE QUALITY OF WASTEWATER FROM CONVENTIONAL AND ADVANCED WET COFFEE PROCESSING PLANTS NEAR JIMMA, ETHIOPIA
Authors: Tsigereda, Kebede
Advisors: Fisseha Itanna(Dr.)
Keywords: Advanced
Comparison
Conventional
Wastewater
Wet Coffee Process
Copyright: May-2011
Date Added: 17-Jul-2012
Publisher: Addis Ababa University
Abstract: The purpose of this study was to characterize and compare wastewater released from conventional and advanced wet coffee processing plants near Jimma. Sampling from raw water and wastewaters were done for both technologies. The water quality parameters used to investigate profiles of the raw water and wastewater from the conventional and advanced wet coffee processing plants were COD, BOD5, DO, NH3, PO4 3-, NO3 --N, pH, TSS, TDS, conductivity, and turbidity. The mean results obtained from conventional wet coffee processing plants were BOD5 (1697 mg/L),COD (5682.5 mg/L), TSS (1975 mg/L), TDS (1800.75 mg/L),respectively and pH was 4.13. The conventional wet coffee wastewater BOD5, COD, pH and TSS did not comply with Ethiopian permissible discharge limit standards whereas mean values of wastewater from advanced wet coffee processing plants for BOD5, COD, pH, and TSS were 2687 mg/L, 3567 mg/L, 6.69, and 282.42 mg/L, respectively. Eventhough there was significant variation among conventional and advanced wet coffee processing plants; advanced wet coffee processing plants were also did not meet Ethiopian permissible discharge limit standards for BOD5, COD and TSS. Therefore, establishment of wet coffee processing wastewater treatment system and regular monitoring is necessary to safeguard the environment from pollution.
Description: A Thesis Submitted to the School of Graduate Studies of Addis Ababa University College of Natural Science in Partial Fulfillment of the Requirements for the Degree of Master of Science in Environmental Science Program
URI: http://hdl.handle.net/123456789/3386
Appears in:Thesis - Environmental Sciences

Files in This Item:

File Description SizeFormat
TSIGEREDA KEBEDE TILAHUN.pdf1.76 MBAdobe PDFView/Open

Items in the AAUL Digital Library are protected by copyright, with all rights reserved, unless otherwise indicated.

 

  Last updated: May 2010. Copyright © Addis Ababa University Libraries - Feedback