Start-up and steady-state results of a full-scale UASB reactor treating malting wastewater

Borzacconi, L.; López, I.; Passeggi, M.
July 2006
Water Science & Technology;2006, Vol. 54 Issue 2, p261
An Imhoff tank was reconstructed into a 250 m3 UASB reactor in order to treat a malting plant wastewater. The UASB was inoculated with sludge from an anaerobic lagoon used for slaughterhouse wastewater treatment. After two months of operation the reactor achieved full load with an HRT of 17 h, a COD removal higher than 80% and a biogas production of 300 m3/day (77% average methane content), with an organic loading rate of 3.6 kgCOD/m3.d (0.24 kgCOD/kgVSS.d). A yield coefficient of 0.09 gVSS/gCODrem was found from a mass balance. The fat present in the inoculated sludge (48 mg/gSSV) did not affect the start up performance. Sludge from the inoculum with high content of fat (270 mg/gSSV), was separated by flotation in the first week of operation. The COD removal efficiency was scarcely influenced by the reactor operation temperature (l7–25 °C).


Related Articles

  • Bio-layer management in anaerobic membrane bioreactors for wastewater treatment. Jeison, D.; van Lier, J. B. // Water Science & Technology;2006, Vol. 54 Issue 2, p81 

    Membrane separation technology represents an alternative way to achieve biomass retention in anaerobic bioreactors for wastewater treatment. Due to high biomass concentrations of anaerobic reactors, cake formation is likely to represent a major cause of flux decline. In the presented research,...

  • Hair in Membrane Bioreactors, Getting to the "Root" of the Problem. Schowengerdt, Matt // WaterWorld;Mar2009, Vol. 25 Issue 3, Special section p18 

    The article discusses the increased use of membrane bioreactors (MBRs) in the treatment of municipal wastewater in the U.S. According to the article, the process involves the use of ultrafiltration membranes in providing a clarification barrier between liquor solids and reactor effluent. In...

  • Biotechnological Utilization with a Focus on Anaerobic Treatment of Cheese Whey: Current Status and Prospects. Chatzipaschali, Aspasia A.; Stamatis, Anastassios G. // Energies (19961073);Sep2012, Vol. 5 Issue 9, p3492 

    Cheese whey utilization is of major concern nowadays. Its high organic matter content, in combination with the high volumes produced and limited treatment options make cheese whey a serious environmental problem. However, the potential production of biogas (methane), hydrogen or other marketable...

  • Koch Membrane Systems Introduces Packaged MBR Systems.  // Pollution Engineering;Jan2009, Vol. 41 Issue 1, p16 

    The article introduces the packaged membrane bioreactor (MBR) systems of Koch Membrane Systems Inc. It notes that the pre-engineered systems produce high-quality effluent while lessening the treatment system footprint, installation costs and manpower commitment for small wastewater treatment...

  • Predator grazing effect on bacterial size distribution and floc size variation in membrane-separation activated sludge. Luxmy, B. S.; Nakajima, F.; Yamamoto, K. // Water Science & Technology;2000, Vol. 42 Issue 3/4, p211 

    In this study the role of higher organisms and the effect of their predation on bacterial size distribution as well as on floc size variation were investigated in the membrane-separation activated sludge system. The pilot plant study was conducted by setting a membrane-separation bioreactor...

  • The effects of hydraulic and organic shock loads on the robustness of upflow anaerobic sludge blanket reactors treating sewage. Leitão, R. C.; Santaellla, S. T.; van Haandel, A. C.; Zeeman, G.; Lettinga, G. // Water Science & Technology;2006, Vol. 54 Issue 2, p49 

    In this investigation, the robustness and stability of UASB reactors was evaluated on the basis of four indicators: (i) COD removal efficiency; (ii) effluent variability; (iii) pH stability; and (iv) recovery time. The experiments were carried out using six pilot-scale UASB reactors fed with...

  • Biofilm adaptation to sulfate reduction in anaerobic immobilized biomass reactors sujected to different COD/sulfate ratios. Damianovic, M. H. R. Z.; Sakamoto, I. K.; Foresti, E. // Water Science & Technology;2006, Vol. 54 Issue 2, p119 

    Various aspects of biofilm adaptation to sulfate reduction in horizontal-flow anaerobic immobilized biomass (HAIB) reactors subjected to increasing sulfate concentrations and different COD/sulfate ratios are presented and discussed. Four bench-scale HAIB reactors filled with vegetal carbon (R1...

  • Profitable Improvements. PEELING, DAVID // WaterWorld;Jan2014, Vol. 30 Issue 1, p32 

    The article focuses on the renovation of the Danvers Vernon C. Russell Water Treatment Facility in Middleton, Massachusetts. It mentions that the water treatment facility was opened in 1976 and is capable of producing 7.5 million-gallon-per-day (MGD) to supply the 33,000 residents of Danvers and...

  • World Demand for Water Treatment Products to Approach US$65 Billion in 2015.  // China Chemical Reporter;10/21/2011, Vol. 22 Issue 20, p9 

    The article reports that the demand for water treatment products are likely to increase by 6.2 percent to approach 65 dollars billion in 2015.


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics