Biological excess phosphorus removal in short sludge age activated sludge systems

The objective of this investigation was to test, at laboratory-scale, the behaviour of short sludge age biological excess P removal systems, to assess the response of the systems under non-nitrifying and nitrifying conditions, to determine the optimal system configuration(s) and operational parameters, and to check the settling characteristics of the mixed liquor produced in the systems. A secondary objective was to use the observed response data to test the predictive qualities of both the general activated sludge model of Dold, Ekama. and Marais (1985) and the semi-empirical biological excess P removal model of Wentzel, Dold, Ekama and Marais (1984). The objectives were fulfilled by operating a number of laboratory scale anaerobic/aerobic and anaerobic/anoxic/aerobic systems with varying sludge ages, anaerobic, anoxic and aerobic mass fractions, mixed liquor recycle ratios and COD loading rates.

Grantor dc:publisher.institution

Department of Civil Engineering

Year dc:date.issued

1986

Author dc:creator

• Burke, Russell Armstrong

Advisor dc:contributor.advisor

• Marais, Gerrit van Rooyen

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/11427/7582

OAI identifier oai:identifier

oai:open.uct.ac.za:11427/7582