Integrated Sustainable Anaerobic Treatment For
Low Strength Wastewater
Author(s)
S. I. Abou-Elela, M. E. Fawzy, M. El-Khateeb
& W. Abdel-Halim
Abstract
The main objective of this study is to demonstrate and implement a cost effective
system for low strength municipal wastewater treatment in rural areas. An
integrated compact anaerobic treatment pilot plant unit was designed,
constructed and operated for almost two years. The pilot plant consists of three
successive compartments mainly; primary sedimentation (PS), packed bed up
flow anaerobic sludge blanket (P-UASB) and inclined plate settler (IPS). The
pilot plant was operated continuously at a hydraulic loading rate of 6m3/day,
average organic loading rate of 2.5 kg COD/m3/day and average retention time
of 4 hrs at the P-UASB and a total retention time 6 hrs for the integrated
treatment unit. The performance of the treatment train was monitored via
physico-chemical as well as bacteriological and parasitological analysis. The
average removal rates of chemical oxygen demand (COD), biological oxygen
demand (BOD5) and total suspended solids (TSS) were 78%, 79% and 91%,
respectively with corresponding average residual values of 71 mgO2/l, 39 mgO2/l
and 18 mg/l. Pathogenic analysis indicated that great majorities were removed
but still some residuals exist. The treated wastewater, after disinfection, was
complying with the Egyptian Code for wastewater reuse in restricted irrigation.
The results indicated that the total life cost of the pilot plant, during the research
period, proved to be a cost-effective process for treating low strength
wastewater.
Keywords: low strength wastewater, anaerobic treatment, packed upflow
anaerobic sludge blanket, inclined plate settler.
Keywords
low strength wastewater, anaerobic treatment, packed upflow
anaerobic sludge blanket, inclined plate settler.
Related Book
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