International Journal of Environmental Planning and Management
Articles Information
International Journal of Environmental Planning and Management, Vol.1, No.1, Apr. 2015, Pub. Date: Mar. 31, 2015
Start-Up of a UASB Reactor Using Ghee Mill Effluent
Pages: 5-9 Views: 2440 Downloads: 1213
Authors
[01] Adil Khan, Northern University, Nowsehera Cantonment, KPK, Pakistan.
[02] Ashad Ali, National University of Sciences and Technology, Islamabad, Pakistan.
[03] Shamin Riaz, Northern University, Nowsehera Cantonment, KPK, Pakistan.
[04] Nazia Shad, Northern University, Nowsehera Cantonment, KPK, Pakistan.
[05] Muhammad Ullah, Northern University, Nowsehera Cantonment, KPK, Pakistan.
[06] Jamila Begum, Northern University, Nowsehera Cantonment, KPK, Pakistan.
Abstract
The ghee mill is one of the most important sectors of Pakistan. In this study actual effluent of the ghee mills was used to study the start-up of the UASB reactor under control pH (neutral) and constant temperature (mesophilhic range). The OLR (Organic loading rate) was step-wise increased from 0.2 kg/m3-day to 4.0kg/m3-day under varying HRT (hydraulic retention time), to avoid organic shocks to the reactor. It was observed that using OLR of 0.32kg/m3-day at HRT of 12hrs about 78% of COD could be reduced at neutral pH and constant temperature of 280 C, corresponding to these conditions 0.32m3/g-CODrem-day of the biogas could be obtained with methane concentration of 51%. Thus this study suggests that using UASB reactor to treat ghee mills effluent is technically a feasible solution and viable option.
Keywords
Wastewater, COD, UASBR, Biogas Yield
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