Trace Organic Chemical Profiles in Nutrient Removal Systems With and Without Integrated Fixed Film Activated Sludge

2009 ◽  
Vol 2009 (17) ◽  
pp. 704-711 ◽  
Author(s):  
Hyun-su Kim ◽  
Ruoting Pei ◽  
Claudia Gunsch ◽  
James W. Gellner ◽  
Joshua P. Boltz ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Organic Chemical ◽  
Fixed Film ◽  
Chemical Profiles ◽  
Trace Organic

Effects of integrated fixed film activated sludge media on activated sludge settling in biological nutrient removal systems

2010 ◽  
Vol 44 (5) ◽  
pp. 1553-1561 ◽  
Author(s):  
Hyun-su Kim ◽  
James W. Gellner ◽  
Joshua P. Boltz ◽  
Robert G. Freudenberg ◽  
Claudia K. Gunsch ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Biological Nutrient Removal ◽  
Fixed Film ◽  
Sludge Settling

Phosphate uptake under anoxic conditions and fixed-film nitrification in nutrient removal activated sludge system

1996 ◽  
Vol 30 (7) ◽  
pp. 1573-1584 ◽  
Author(s):  
R. S̆orm ◽  
G. Bortone ◽  
R. Saltarelli ◽  
P. Jeníc̆ek ◽  
J. Wanner ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Phosphate Uptake ◽  
Anoxic Conditions ◽  
Activated Sludge System ◽  
Fixed Film

scholarly journals Multiscale investigation of a symbiotic microalgal-integrated fixed film activated sludge (MAIFAS) process for nutrient removal and photo-oxygenation

2018 ◽  
Vol 268 ◽  
pp. 128-138 ◽  
Author(s):  
Jared Church ◽  
Hodon Ryu ◽  
A.H.M. Anwar Sadmani ◽  
Andrew Amis Randall ◽  
Jorge Santo Domingo ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Fixed Film

scholarly journals Integrated fixed-film activated sludge membrane bioreactors versus membrane bioreactors for nutrient removal: A comprehensive comparison

2018 ◽  
Vol 226 ◽  
pp. 347-357 ◽  
Author(s):  
Giorgio Mannina ◽  
George A. Ekama ◽  
Marco Capodici ◽  
Alida Cosenza ◽  
Daniele Di Trapani ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Membrane Bioreactors ◽  
Fixed Film ◽  
Comprehensive Comparison

Examples for the Upgrading of Existing Activated Sludge Plants for Nutrient Removal

1990 ◽  
Vol 22 (7-8) ◽  
pp. 113-121
Author(s):  
W. Maier
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Sewage Treatment ◽  
West Germany ◽  
Sewage Treatment Plants ◽  
Effluent Standards ◽  
Near Future

In view of the new effluent standards in West Germany, including nitrification and phosphorus elimination, many of the existing sewage treatment plants will have to be rebuilt or expanded. Another demand which will have to be dealt with in the near future is denitrification. Under consideration of the large BOD5-loads which were taken into account when designing the plants, many of them nitrify during the summer or can be easily converted to operate with nitrification. Principles for planning the upgrading of such plants have been laid down in order to achieve the required effluent concentrations. The application of these principles is demonstrated with examples of upgraded plants.

Verification of anoxic phosphate uptake as the main biochemical mechanism of the “dephanox” process

1997 ◽  
Vol 35 (10) ◽  
pp. 87-94 ◽  
Author(s):  
R. Sorm ◽  
J. Wanner ◽  
R. Saltarelli ◽  
G. Bortone ◽  
A. Tilche
Keyword(s):  
Activated Sludge ◽  
Nutrient Removal ◽  
Uptake Rate ◽  
Phosphate Uptake ◽  
Biochemical Mechanism ◽  
Batch Experiments ◽  
Batch Tests ◽  
Genetic Probes ◽  
Activated Sludge Systems ◽  
Removal System

The phenomenon of anoxic phosphate uptake with simultaneous denitrification was studied. For this purpose kinetic batch tests have been carried out by using the activated sludge samples from three modifications of nutrient removal activated sludge systems: two based on an anaerobic-anoxic-oxic (A2/O) system and a third on an anaerobic-oxic (A/O) system. The results showed significant differences in anoxic phosphate uptake rate between activated sludge which was alternatively exposed to anoxic conditions and activated sludge from the A/O arrangement. These differences were also accompanied by different denitrification rates. Simultaneously with batch experiments the microscopic observation of activated sludge samples was carried out. Neisser and Gram stained samples showed clear differences in shape, size and distribution of polyphosphate accumulating bacteria between A2/O and A/O Processes. Moreover, experiments performed using genetic probes confirmed the differences in microbiological composition of activated sludge samples from different nutrient removal system arrangements.

Dynamic modeling of nitrogen removal for a three-stage integrated fixed-film activated sludge process treating municipal wastewater

2017 ◽  
Vol 41 (2) ◽  
pp. 237-247 ◽  
Author(s):  
Paul Moretti ◽  
Jean-Marc Choubert ◽  
Jean-Pierre Canler ◽  
Pierre Buffière ◽  
Olivier Pétrimaux ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Dynamic Modeling ◽  
Nitrogen Removal ◽  
Municipal Wastewater ◽  
Activated Sludge Process ◽  
Fixed Film
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