The effects of hydraulic retention time and feed COD concentration on the rate of hydrolysis of primary sewage sludge under methanogenic conditions

Water Science and Technology

Volumn 54, Issue 5, 2006, Pages 91-100

  Ristow, N E ^a   Sotemann S W ^a   Wentzel, M C ^a   Loewenthal, R E ^a   Ekama, G A ^a  

^a UNIVERSITY OF CAPE TOWN   (South Africa)

Author keywords

Anaerobic digestion; Feed COD concentration; First order kinetics; Hydraulic retention time; Hydrolysis; Primary sewage sludge

Indexed keywords

ANAEROBIC DIGESTION; CHEMICAL OXYGEN DEMAND; HYDROLYSIS; METHANOGENS; RATE CONSTANTS;

FEED COD CONCENTRATION; FIRST ORDER KINETICS; HYDRAULIC RETENTION TIME;

SEWAGE SLUDGE;

BICARBONATE; OXYGEN; VOLATILE FATTY ACID;

ANAEROBIC DIGESTION; CHEMICAL OXYGEN DEMAND; HYDROLYSIS; METHANOGENS; RATE CONSTANTS; SEWAGE SLUDGE;

ANOXIC CONDITIONS; CHEMICAL OXYGEN DEMAND; DIGESTION; HYDROLYSIS; SEWAGE TREATMENT; SLUDGE; WATER RETENTION;

ACCURACY; ALKALINITY; ANAEROBIC DIGESTION; ARTICLE; CHEMICAL OXYGEN DEMAND; CONCENTRATION (PARAMETERS); CONTROLLED STUDY; EFFLUENT; HYDRAULIC CONDUCTIVITY; HYDROLYSIS; MATHEMATICAL ANALYSIS; METHANOGENESIS; PACKED BED REACTOR; PH; PREDICTION; PROCESS MODEL; SLUDGE DIGESTION; SLUDGE TREATMENT; STEADY STATE; TIME;

BIOREACTORS; FATTY ACIDS, VOLATILE; HYDROGEN-ION CONCENTRATION; HYDROLYSIS; METHANE; MODELS, BIOLOGICAL; OXYGEN; SEWAGE; SULFATES; TIME FACTORS; WASTE DISPOSAL, FLUID;

EID: 33751061649     PISSN: 02731223     EISSN: None     Source Type: Book Series    
DOI: 10.2166/wst.2006.551     Document Type: Article

References (9)

1. Eastman, J.A. and Ferguson, J.F. (1981). Solubilisation of particulate organic carbon during the acid phase of anaerobic digestion. J. WPCF, 53(3), 352-366.
2. Izzett, H.B., Wentzel, M.C. and Ekama, G.A. (1992). The effect of thermophilic heat treatment on the anaerobic digestability of primary sludge. Report No W76, Dept. Civil Eng., Univ. of Cape Town, Rondebosch 7701, South Africa.
3. 3* alkalinity and short chain fatty acids in aqueous solutions containing known concentrations of ammonium, phosphate and sulphide weak acid/bases. WRC Report No TT 57/ 92 (70pp). Water Research Commission PO, Gezina 0031, South Africa. ISBN 1 874858 54 3.
4. Miron, Y., Zeeman, G., van Lier, J.B. and Lettinga, G. (2000). The role of sludge retention time in the hydrolysis and acidification of lipids, carbohydrates and proteins during digestion of primary sludge in CSTR systems. Wat. Res., 34(5), 1705-1713.
5. O'Rourke, J.T. (1968). Kinetics of Anaerobic Waste Treatment at Reduced Temperatures. PhD thesis, Department of Civil Engineering, Stanford University.
6. Ristow, N.E., Sötemann, S.W., Loewenthal, R.E., Wentzel, M.C. and Ekama, G.A. (2005). Hydrolysis of primary sewage sludge under methanogenic, acidogenic and sulfate-reducing conditions. Report 1216/1/ 05, Water Research Commission, P/Bag X03, Gezina 0031, RSA.
7. Sötemann, S.W., van Rensburg, P., Ristow, N.E., Wentzel, M.C., Loewenthal, R.E. and Ekama, G.A. (2004). Integrated chemical/physical and biological processes modelling part 2: anaerobic digestion of sewage sludges. Procs. Water Institute of Southern Africa Biennial Conference (WISA 2004), Cape Town, May, ISBN 1-920-01728-3.
8. Standard Methods for the Examination of Water and Wastewater (1985). 19th edn, American Public Health Association/American Water Works Association/Water Environment Federation, Washington DC, USA.
9. Veeken, A., Kalyuzhnyi, S., Scharff, H. and Hamelers, B. (2000). Effect of pH and VFA on hydrolysis of organic solid waste. J. Environ. Engng., 126(12), 1076-1081.