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G. A. Ekama
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Journal Articles

Saline sewage treatment and source separation of urine for more sustainable urban water management

G. A. Ekama, J. A. Wilsenach, G. H. Chen
Water Sci Technol (2011) 64 (6): 1307–1316.
DOI: https://doi.org/10.2166/wst.2011.403
Date Online: 01 September 2011
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Journal Articles

The role and control of sludge age in biological nutrient removal activated sludge systems

G. A. Ekama
Water Sci Technol (2010) 61 (7): 1645–1652.
DOI: https://doi.org/10.2166/wst.2010.972
Date Online: 01 April 2010
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Journal Articles

Design and start-up of a high rate anaerobic membrane bioreactor for the treatment of a low pH, high strength, dissolved organic waste water

P. J. Van Zyl, M. C. Wentzel, G. A. Ekama, K. J. Riedel
Water Sci Technol (2008) 57 (2): 291–295.
DOI: https://doi.org/10.2166/wst.2008.083
Date Online: 01 January 2008
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Journal Articles

External nitrification in biological nutrient removal activated sludge systems

Z.-R. Hu, M. C. Wentzel, G. A. Ekama
Water Sci Technol (2001) 43 (1): 251–260.
DOI: https://doi.org/10.2166/wst.2001.0055
Date Online: 01 January 2001
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Journal Articles

An assessment of sewage sludge stability with a specific oxygen utilization rate (SOUR) test method

K. A. Samson, G. A. Ekama
Water Sci Technol (2000) 42 (9): 37–40.
DOI: https://doi.org/10.2166/wst.2000.0165
Date Online: 01 November 2000
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Journal Articles

Heterotrophic active biomass component of activated sludge mixed liquor

M. C. Wentzel, M. F. Ubisi, G. A. Ekama
Water Sci Technol (1998) 37 (4-5): 79–87.
DOI: https://doi.org/10.2166/wst.1998.0586
Date Online: 01 February 1998
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Journal Articles

Tentative guidelines for waste selection, process design, operation and control of upflow anaerobic sludge bed reactors

M. C. Wentzel, R. E. Moosbrugger, P. A. L. N. S. Sam-Soon, G. A. Ekama, G. v. R. Marais
Water Sci Technol (1994) 30 (12): 31–42.
DOI: https://doi.org/10.2166/wst.1994.0577
Date Online: 01 December 1994
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Journal Articles

A Hypothesis for the Causes and Control of Anoxic-Aerobic (AA) Filament Bulking in Nutrient Removal Activated Sludge Systems

T. G. Casey, M. C. Wentzel, G. A. Ekama, R. E. Loewenthal, GvR Marais
Water Sci Technol (1994) 29 (7): 203–212.
DOI: https://doi.org/10.2166/wst.1994.0343
Date Online: 01 April 1994
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Journal Articles

The Effect of Incomplete Denitrification on Anoxic-Aerobic (Low F/M) Filament Bulking in Nutrient Removal Activated Sludge Systems

E. V. Musvoto, T. G. Casey, G. A. Ekama, M. C. Wentzel, GvR Marais
Water Sci Technol (1994) 29 (7): 295–299.
DOI: https://doi.org/10.2166/wst.1994.0354
Date Online: 01 April 1994
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Journal Articles

A 5 pH Point Titration Method for Determining the Carbonate and SCFA Weak Acid/Bases in Anaerobic Systems

R. E. Moosbrugger, M. C. Wentzel, G. A. Ekama, G. v. R. Marais
Water Sci Technol (1993) 28 (2): 237–245.
DOI: https://doi.org/10.2166/wst.1993.0112
Date Online: 01 July 1993
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Journal Articles

Treatment of Wine Distillery Waste in UASB Systems – Feasibility, Alkalinity Requirements and pH Control

R. E. Moosbrugger, M. C. Wentzel, G. A. Ekama, G. v. R. Marais
Water Sci Technol (1993) 28 (2): 45–54.
DOI: https://doi.org/10.2166/wst.1993.0074
Date Online: 01 July 1993
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Journal Articles

Processes and Modelling of Nitrification Denitrification Biological Excess Phosphorus Removal Systems – A Review

M. C. Wentzel, G. A. Ekama, G. v. R. Marais
Water Sci Technol (1992) 25 (6): 59–82.
DOI: https://doi.org/10.2166/wst.1992.0114
Date Online: 01 March 1992
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Journal Articles

Denitrification Kinetics in Biological Nitrogen and Phosphorus Removal Activated Sludge Systems Treating Municipal Waste Waters

J. A. Clayton, G. A. Ekama, M. C. Wentzel, G. v. R. Marais
Water Sci Technol (1991) 23 (4-6): 1025–1035.
DOI: https://doi.org/10.2166/wst.1991.0554
Date Online: 01 February 1991
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Journal Articles

Kinetics of Nitrification Denitrification Biological Excess Phosphorus Removal Systems–A Review

M. C. Wentzel, G. A. Ekama, G. v. R. Marais
Water Sci Technol (1991) 23 (4-6): 555–565.
DOI: https://doi.org/10.2166/wst.1991.0505
Date Online: 01 February 1991
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Journal Articles

Evaluation of Biochemical Models for Biological Excess Phosphorus Removal

M. C. Wentzel, L. H. Lötter, G. A. Ekama, R. E. Loewenthal, G. v. R. Marais
Water Sci Technol (1991) 23 (4-6): 567–576.
DOI: https://doi.org/10.2166/wst.1991.0506
Date Online: 01 February 1991
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Journal Articles

The Selector Effect on Filamentous Bulking in Long Sludge Age Activated Sludge Systems

D. M. D. Gabb, D. A. Still, G. A. Ekama, D. Jenkins, G. v. R. Marais
Water Sci Technol (1991) 23 (4-6): 867–877.
DOI: https://doi.org/10.2166/wst.1991.0538
Date Online: 01 February 1991
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Journal Articles

Oxygen Utilization Rate as a Control Parameter for the Aerobic Stage in Dual Digestion

J. R. Messenger, H. A. de Villiers, G. A. Ekama
Water Sci Technol (1990) 22 (12): 217–227.
DOI: https://doi.org/10.2166/wst.1990.0116
Date Online: 01 December 1990
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Journal Articles

Incidence of Sphaerotilus Natans in Laboratory Scale Activated Sludge Systems

D. M. D. Gabb, G. A. Ekama, D. Jenkins, G. v. R. Marais
Water Sci Technol (1989) 21 (4-5): 29–41.
DOI: https://doi.org/10.2166/wst.1989.0208
Date Online: 01 April 1989
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Journal Articles

The Implications of the IAWPRC Hydrolysis Hypothesis on Low F/M Bulking

G. A. Ekama, G v. R. Marais
Water Sci Technol (1986) 18 (6): 11–19.
DOI: https://doi.org/10.2166/wst.1986.0057
Date Online: 01 June 1986
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Journal Articles

Procedures for Determining Influent COD Fractions and the Maximum Specific Growth Rate of Heterotrophs in Activated Sludge Systems

G. A. Ekama, P. L. Dold, G v. R. Marais
Water Sci Technol (1986) 18 (6): 91–114.
DOI: https://doi.org/10.2166/wst.1986.0062
Date Online: 01 June 1986
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