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Anaerobic treatment of a medium strength industrial wastewater at low-temperature and short hydraulic retention time: a pilot-scale experience.

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  • معلومة اضافية
    • المصدر:
      Publisher: IWA Publishing Country of Publication: England NLM ID: 9879497 Publication Model: Print Cited Medium: Print ISSN: 0273-1223 (Print) Linking ISSN: 02731223 NLM ISO Abbreviation: Water Sci Technol Subsets: MEDLINE
    • بيانات النشر:
      Publication: <1998->: London : IWA Publishing
      Original Publication: Oxford ; New York : Pergamon Press, 1981-
    • الموضوع:
      Temperature*; Industrial Waste/*analysis ; Waste Disposal, Fluid/*methods ; Water Pollutants, Chemical/*chemistry; Anaerobiosis ; Biofuels ; Fatty Acids, Volatile ; Methane ; Pilot Projects ; Time Factors
    • نبذة مختصرة :
      The aim of this work was to evaluate the performance of a pilot-scale upflow anaerobic sludge blanket (UASB) reactor during the treatment of cereal-processing industry wastewater under low-temperature conditions (17 degrees C) for more than 300 days. The applied organic loading rate (OLR(appl)) was gradually increased from 4 to 6 and 8 kg COD(sol)/m3d by increasing the influent soluble chemical oxygen demand (COD(sol)), while keeping the hydraulic retention time constant (5.2 h). The removal efficiency was high (82 to 92%) and slightly decreased after increasing the influent COD(sol) and the OLR(appl). The highest removed organic loading rate (OLR(rem)) was reached when the UASB reactor was operated at 8 kg COD(sol)/m3d and it was two times higher than that obtained for an OLR(appl) of 4 kg COD(sol)/m3d. Some disturbances were observed during the experimentation. The formation of biogas pockets in the sludge bed significantly complicated the biogas production quantification, but did not affect the reactor performance. The volatile fatty acids in the effluent were low, but increased as the OLR(appl) increased, which caused an increment of the effluent COD(sol). Anaerobic treatment at low temperature was a good option for the biological pre-treatment of cereal processing industry wastewater.
    • الرقم المعرف:
      0 (Biofuels)
      0 (Fatty Acids, Volatile)
      0 (Industrial Waste)
      0 (Water Pollutants, Chemical)
      OP0UW79H66 (Methane)
    • الموضوع:
      Date Created: 20120217 Date Completed: 20120404 Latest Revision: 20190918
    • الموضوع:
      20231215
    • الرقم المعرف:
      10.2166/wst.2011.741
    • الرقم المعرف:
      22335105