Effect of hydraulic retention time on the performance of down-flow hanging sponge system treating grey wastewater

• Published in: Bioprocess and biosystems engineering Vol. 34; no. 6; pp. 767 - 776
• Main Authors: Tawfik, Ahmed, Wahab, Rifaat Abdel, Al-Asmer, Azza, Matary, Fatma
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.08.2011; Springer; Springer Nature B.V
• Subjects: Biofiltration; Biological and medical sciences; Biomass; Biotechnology; Chemistry; Chemistry and Materials Science; Detergents - analysis; Developing Countries; Enterobacteriaceae - isolation & purification; Environmental Engineering/Biotechnology; Equipment Design; Food Science; Fundamental and applied biological sciences. Psychology; Humans; Hydraulics; Industrial and Production Engineering; Industrial Chemistry/Chemical Engineering; Microscopy, Electron, Scanning; Nitrification; Organic loading; Original Paper; Retention; Retention time; Temperature; Time Factors; Waste Disposal, Fluid - instrumentation; Waste Disposal, Fluid - methods; Water Microbiology; Water Pollutants, Chemical - isolation & purification; Water Purification - instrumentation; Water Purification - methods; Water treatment; Total coliform; COD; SEM; Grey wastewater; DHS; Nitrification; Scanning electron microscopy; Hydraulics; Coliforms; Retention time; Waste water; Grey Wastewater; Porifera; Cod; Invertebrata

Grey wastewater (GW) treatment via down-flow hanging sponge (DHS) system was the subject of the study. The reactor was operated at different hydraulic retention times (HRTs) of 11.7, 5.8 and 2.9 h, corresponding to organic loading rates (OLRs) of 1.9, 3.6 and 6.8 kgCOD/m 3  day, respectively. The re...