Ecological Aspects of Biological Phosphorus Removal in Activated Sludge Systems

2000 ◽  
pp. 169-200 ◽  
Author(s):  
Gerard J. J. Kortstee ◽  
Klaas J. Appeldoorn ◽  
Cornelus F. C. Bonting ◽  
Ed W. J. van Niel ◽  
Hendrik J. Van Veen
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
Ecological Aspects ◽  
Biological Phosphorus ◽  
Activated Sludge Systems

Design of nutrient removal activated sludge systems

2003 ◽  
Vol 47 (11) ◽  
pp. 115-122 ◽  
Author(s):  
J. Manga ◽  
J. Ferrer ◽  
A. Seco ◽  
F. Garcia-Usach
Keyword(s):  
Mathematical Model ◽  
Activated Sludge ◽  
Nutrient Removal ◽  
Phosphorus Removal ◽  
Pilot Plant ◽  
Enhanced Biological Phosphorus Removal ◽  
Biological Phosphorus Removal ◽  
User Friendly ◽  
Biological Phosphorus ◽  
Activated Sludge Systems

A mechanistic mathematical model for nutrient and organic matter removal was used to describe the behavior of a nitrification denitrification enhanced biological phosphorus removal (NDEBPR) system. This model was implemented in a user-friendly software DESASS (design and simulation of activated sludge systems). A 484-L pilot plant was operated to verify the model results. The pilot plant was operated for three years over three different sludge ages. The validity of the model was confirmed with data from the pilot plant. Also, the utility of DESASS as a valuable tool for designing NDEBPR systems was confirmed.

The Activated Sludge Model No. 2: biological phosphorus removal

1995 ◽  
Vol 31 (2) ◽  
pp. 1-11 ◽  
Author(s):  
W. Gujer ◽  
M. Henze ◽  
T. Mino ◽  
T. Matsuo ◽  
M. C. Wentzel ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Biological Nutrient Removal ◽  
Final Report ◽  
Full Model ◽  
Biological Phosphorus Removal ◽  
Activated Sludge Model ◽  
Further Development ◽  
Biological Phosphorus ◽  
Activated Sludge Systems

The Activated Sludge Model No. 2 is introduced as a further development of Activated Sludge Model No. 1. Model No. 2 introduces phosphorus accumulating organisms (PAO) and allows us to simulate the behaviour of biological nutrient removal activated sludge systems. Typical wastewater composition and a set of stoichiometric and kinetic parameters are provided in order to make reasonable predictions. The model has not yet been calibrated or verified in any full-scale application. This report contains a simplified version of the full Model No. 2; the full model is published in the final report of the Task Group (Henze et al., 1994).

Influence of the enhanced biological phosphorus removal on the waste activated sludge production

1996 ◽  
Vol 34 (1-2) ◽  
pp. 17-23 ◽  
Author(s):  
Norbert Jardin ◽  
H. Johannes Pöpel
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Waste Activated Sludge ◽  
Biological Phosphorus Removal ◽  
Significant Difference ◽  
The Difference ◽  
Biological Phosphorus ◽  
Phosphorus Storage ◽  
Activated Sludge Systems ◽  
Sludge Production

The effect of the enhanced phosphorus removal process (EBPR) on the waste activated sludge production and the type of phosphorus storage were investigated in two continuous flow activated sludge systems on semi-technical scale. One of the plants (plant II) was operated with the A/O process, whereas the other plant (plant I) was operated in a conventional, fully aerobic mode and served as a control. By monitoring the elementary composition of the activated sludge solids in plant II it was proved that a major part of the enhanced phosphorus removal was due to a storage as polyphosphate (poly-P). The additional uptake of phosphorus resulted in an increase of the inorganic sludge mass which was determined as 3.05 g SS/g P using the results of the measurements of the non volatile solid fraction. This value was also experimentally confirmed by the measurement of the difference between the WAS production of plant I and plant II. Based on the specific WAS production, an additional dry solids production of 3.14 g SS/g P was calculated. No indications for a significant difference of the organic sludge production between both plants were found, although the organic WAS production was slightly higher in experimental periods with a relatively high phosphorus content of the activated sludge solids of plant II.

Dynamic modelling of enhanced biological phosphorus and nitrogen removal in activated sludge systems

1998 ◽  
Vol 38 (1) ◽  
pp. 203-210
Author(s):  
M. Maurer ◽  
W. Gujer
Keyword(s):  
Activated Sludge ◽  
Phosphorus Removal ◽  
Dynamic Modelling ◽  
Energy Yield ◽  
Biological Phosphorus Removal ◽  
Batch Experiments ◽  
P Release ◽  
Biological Phosphorus ◽  
Activated Sludge Systems ◽  
Model Approach

A dynamic model for the description of enhanced biological phosphorus removal is presented. Model approach and structure were mainly adopted from the “Activated Sludge Model (ASM) No 2”. Two additional processes for the anoxic growth of phosphorus accumulating organisms (PAO) and anoxic storage of polyphosphate were included. The model was further enhanced with three processes describing biologically induced phosphorus precipitation. Stoichiometric coefficients for anoxic conditions are modified under the consideration of a 35% reduction of energy yield compared with oxygen as electron acceptor. In addition, a ratio for the anaerobic P-release per substrate taken-up is introduced, which depends on pH, glycogen and substrate. With the aid of 18 batch-experiments and measurements from a WWT pilot plant, a set of kinetic parameter was estimated, that was able to reproduce satisfactorily the nutrient removal behaviour of the investigated sludge.

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