[01] Naveed A., Department of Environmental Sciences, University of Haripur, Haripur, Pakistan. [02] Tariq K., Department of Environmental Sciences, University of Haripur, Haripur, Pakistan. [03] Arshad A., Department of Civil Engineering Wing, MCE, National University of Sciences and Technology, Islamabad, Pakistan. [04] M. Jawad A., Department of Environmental Sciences, University of Haripur, Haripur, Pakistan. [05] Ghayas K., Department of Environmental Sciences, University of Haripur, Haripur, Pakistan. [06] H. Shahab, Department of Environmental Sciences, University of Haripur, Haripur, Pakistan. [07] H. Umaira S., Department of Environmental Sciences, Northern University, Nowshera, Pakistan.

This study was designed to evaluate the treatability performance of a single-stage UASBR at neutral pH and constant mesophilic temperature, and to investigate the biogas yield of a single-stage UASBR using textile mill. For this purpose sixty five percent of UASB reactor was seeded with anaerobic digester and activated sludge the nearby wastewater treatment plant. The acclimatization process continued for about 28-29 days in the laboratory. The seed sludge provided 41 grams of volatile suspended solids (VSS). The organic loading rate of 0.6kg-COD/m3.day and a HRT of 22hours are the conservative figures that warrant a removal efficiency of more than 80%.Since, Pakistan is facing a shortage of energy; therefore, encouraging such technologies can help to tackle the problem of energy crises.

Textile Mill, Effluent, COD, UASBR, Biogas

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