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Sewage water treatment using conventional and packed up-flow anaerobic sludge blanket (UASB) reactor

 M.M. Al-Enazi1,2, M.A. El-Khateeb*3,4 and A.Z. El-Bahrawy3

1. Department of Medical Laboratory Sciences, Collage of Applied Medical Sciences,

 Salman bin Abdulaziz Univ., Kingdom of Saudi Arabia.

2. Vice Rector of Graduate Studies & Scientific Research, Al Jouf University, KSA

3. Faculty of Science, Environmental Sciences Department, Al Jouf University, KSA

4. National research Center, Water Pollution Control Department, Dokki, Cairo, Egypt.

* Corresponding author: [email protected], [email protected]

ABSTRACT

Feasibility of using conventional and packed up-flow anaerobic sludge blanket (UASB) reactors for the treatment of sewage water was studied. Two similar UASB reactors were operated at two different hydraulic retention time (HRT) of 6 and 8 hrs. The reactors were operated with activated sludge inoculation in March 2012. Sample collection was carried out after the steady state has been reached (about two months). The results showed that the efficiency of UASB reactors was comparable for the removal of chemical oxygen demand (COD), biological oxygen demand (BOD) and total suspended solids (TSS). On the other hand, the removal of faecal coliform (FC) did not exceed two log units in most cases. The results revealed that the quality of the effluent was not complying with WHO regulatory standards for reuse for irrigation. Consequently, post treatment step is of vital importance to protect the environment.

Key words: UASB, conventional, packed, anaerobic treatment, Skaka, domestic wastewater