TITLE

Adaptive neuro-fuzzy modelling of anaerobic digestion of primary sedimentation sludge

AUTHOR(S)
Mehmet Cakmakci
PUB. DATE
September 2007
SOURCE
Bioprocess & Biosystems Engineering;Sep2007, Vol. 30 Issue 5, p349
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Abstract  Modelling of anaerobic digestion systems is difficult because their performance is complex and varies significantly with influent characteristics and operational conditions. In this study, Adaptive Neuro-Fuzzy Inference System (ANFIS) were used for modelling of anaerobic digestion system of primary sludge of Kayseri municipal WasteWater Treatment Plant (WWTP). Effluent Volatile Solid (VS) and methane yield were predicted by the ANFIS. Two stage models were performed. In the first stage, effluent VS concentration was predicted using pH, VS concentration, flowrate of pre-thickened sludge and temperature of the influent as input parameters. In the second stage, effluent VS concentration in addition to first stage input parameters were used as input parameters to predict methane yield. The low Root Mean Square Error (RMSE) and high Index of agreement (IA) values were obtained with subtractive clustering method of a first order Sugeno type inference. The model performance was evaluated with statistical parameters. According to statistical evaluations, the models satisfactorily predict effluent VS concentration and methane yield.
ACCESSION #
26272007

 

Related Articles

  • INFLUENCE OF THE DIGESTED COD CONCENTRATION ON THE ALKALINITY REQUIREMENT IN ANAEROBIC DIGESTERS. Van Haandel, Adrianus C. // Water Science & Technology;1994, Vol. 30 Issue 8, p23 

    pH value and stability in anaerobic digesters are governed by the carbonic system. An expression is derived to determine the alkalinity requirement for maintaining a desired pH value in an anaerobic digester. The requirement is calculated from stoichiometric relationships and depends on...

  • Organic material solubilization of domestic primary sludge in anaerobic digestion at controlled pH. Gomec, C. Yangin; Speece, R. E. // Water Science & Technology;2003, Vol. 48 Issue 4, p195 

    The role of the pH in the anaerobic digestion of domestic primary sludge at mesophilic temperature was evaluated. Since solubilization of organic materials is seriously affected by pH, much research has been performed for the evaluation of significant pH influence on the production of soluble...

  • Phosphorus recovery from wastewater through struvite formation in fluidized bed reactors: a sustainable approach. Bhuiyan, M. I. H.; Mavinic, D. S.; Koch, F. A. // Water Science & Technology;2008, Vol. 57 Issue 2, p175 

    Recovery of phosphate as struvite (MgNH4PO4â‹…6H2O), before it forms and accumulates on wastewater treatment equipment, solves wastewater treatment problems and also provides environmentally sustainable, renewable nutrient source for the agriculture sector. A pilot-scale fluidized bed...

  • The role of pH in the organic material solubilization of domestic sludge in anaerobic digestion. Gomec, C. Yangin; Speece, R. E. // Water Science & Technology;2003, Vol. 48 Issue 3, p143 

    The effect of pH on anaerobic solubilization of domestic primary sludge and activated sludge was investigated and compared. Anaerobic solubilization was carried out in continuously stirred anaerobic reactors at mesophilic temperature (35°C) and pH was fixed at 6.5 (pH-controlled). Many...

  • Removal and recovery of phosphorus during anaerobic digestion of excess sludge by the addition of waste iron scrap. WEI ZHENG; XIAO MING LI; DONG BO WANG; QI YANG; KUN LUO; GUO JING YANG; GUANG MING ZENG // Journal of the Serbian Chemical Society;Feb2013, Vol. 78 Issue 2, p303 

    In the current investigation, the feasibility of phosphorus removal in the anaerobic digestion of excess sludge by the addition of waste iron scrap (WIS) was studied. The results showed that the removal efficiency of phosphorus increased with increasing amount of WIS, and the maximum removal...

  • Simulation of the Impact of Higher Ammonia Recycle Loads Caused by Upgrading Anaerobic Sludge Digesters. Kraemer, Jeremy T.; Bagley, David M. // Water Quality Research Journal of Canada (Canadian Association o;2005, Vol. 40 Issue 4, p491 

    Upgrading conventional single-stage mesophilic anaerobic digestion to an advanced digestion technology can increase sludge stability, reduce pathogen content, increase biogas production, and also increase ammonia concentrations recycled back to the liquid treatment train. Limited information is...

  • Heavy metals extraction from anaerobically digested sludge. Marchioretto, M. M.; Bruning, H.; Loan, N. T. P.; Rulkens, W. H. // Water Science & Technology;2002, Vol. 46 Issue 10, p1 

    This paper reports on the chemical extraction efficiency in the removal of heavy metals from sludge from an activated-sludge system, which receives as influent both industrial and municipal wastewater. Utilizing a series of chemical extractants in a sequential order comprised the first phase of...

  • Advantages of anaerobic digestion of sludge in microaerobic conditions. Jenicek, P.; Koubova, J.; Bindzar, J.; Zabranska, J. // Water Science & Technology;2010, Vol. 62 Issue 2, p427 

    The paper reviews results and experience of microaerobic experiments at both high and low sulphide concentrations and evaluates advantages and drawbacks of the anaerobic digestion of sludge in microaerobic conditions as regards biogas quality, digested sludge quality, organic pollutants...

  • Stirling Council reaches for the horizon.  // Local Authority Waste & Recycling;Mar2011, Vol. 19 Issue 3, p17 

    The article reports that the Stirling Council plans to collect food waste from an estimated 39,500 homes for processing at the anaerobic digestion (AD) plant of Horizons Environment in Deerdykes, Scotland, with the aim of helping the Scottish Government reach its target of 50% recycling by 2013.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics