Dyeing wastewater treatment by activated sludge process with a polyurethane fluidized bed biofilm

Research Article| September 01 1996 Dyeing wastewater treatment by activated sludge process with a polyurethane fluidized bed biofilm Yung-Kyu Park; Yung-Kyu Park Search for other works by this author on: This Site PubMed Google Scholar Chul-Hee Lee Chul-Hee Lee Search for other works by this author on: This Site PubMed Google Scholar Water Sci Technol (1996) 34 (5-6): 193–200. https://doi.org/10.2166/wst.1996.0551 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Twitter LinkedIn Tools Icon Tools Cite Icon Cite Permissions Search Site Search nav search search input Search input auto suggest search filter All ContentAll JournalsThis Journal Search Advanced Search Citation Yung-Kyu Park, Chul-Hee Lee; Dyeing wastewater treatment by activated sludge process with a polyurethane fluidized bed biofilm. Water Sci Technol 1 September 1996; 34 (5-6): 193–200. doi: https://doi.org/10.2166/wst.1996.0551 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex In case of the porous polyurethane fluidized bed biofilm-activated sludge process followed by a coagulation process(the FBAS-C process), 75% CODMn was removed by treating with the biological FBAS process in the loading range of 0.16∼0.32 kgCODMn/kgVSS·day. The biomass yield and microbial decay coefficients were 0.42 kg MLSS/kgBOD and 0.11 day−1, respectively. The optimum coagulation conditions for the effluent of the FBAS process were at pH 6 and 600mg/L alum dosage. Consequently, 92% of total CODMn removal efficiency was observed in the FBAS-C process. Meanwhile, in case of a coagulation process followed by the porous polyurethane fluidized bed biofilm-activated sludge process(C-FBAS process). the raw dyeing wastewater was treated at pH 6 in the presence of 1,000 mg/L alum and, continuously, the effluent coagulated wastewater was treated by the FBAS process in the loading range of 0.09∼0.19 kg CODMn/kgVSS·day. Removal efficiency of CODMn in the biological process, FBAS, was 82%. The biomass yield and microbial decay coefficient in the C-FBAS process were similar to those in the FBAS-C process.The final effluent CODMn was about 65 mg/L in both tested processes, the FBAS-C and C-FBAS. However, the FBAS-C process illustrated better treatibility than C-FBAS in terms of the total sludge production, since the former produced about 20% less sludge than the latter. Dyeing wastewater, FBAS-process, coagulation process, treatability, sludge production This content is only available as a PDF.