Molecular Characteristics and Differences of Effluent Organic Matter from Parallel Activated Sludge and Integrated Fixed-Film Activated Sludge (IFAS) Processes

2013 ◽  
pp. 130827102639005 ◽  
Author(s):  
Linda Y. Tseng ◽  
Michael Gonsior ◽  
Philippe Schmitt-Kopplin ◽  
William J. Cooper ◽  
Paul Pitt ◽  
...  
Keyword(s):  
Organic Matter ◽  
Activated Sludge ◽  
Molecular Characteristics ◽  
Effluent Organic Matter ◽  
Fixed Film

Comparison of effluent organic matter from parallel activated sludge and integrated fixed-film activated sludge (IFAS) processes

2013 ◽  
Vol 2013 (7) ◽  
pp. 6553-6562 ◽  
Author(s):  
Linda Y. Tseng ◽  
Michael Gonsior ◽  
Philippe Schmitt-Kopplin ◽  
William J. Cooper ◽  
Paul Pitt ◽  
...  
Keyword(s):  
Organic Matter ◽  
Activated Sludge ◽  
Effluent Organic Matter ◽  
Fixed Film

The Use of Anoxic Selectors for the Control of Low F/M Activated Sludge Bulking

1989 ◽  
Vol 21 (6-7) ◽  
pp. 609-619 ◽  
Author(s):  
Y.-J. Shao ◽  
David Jenkins
Keyword(s):  
Organic Matter ◽  
Activated Sludge ◽  
Pilot Plant ◽  
Detention Time ◽  
Substrate Removal ◽  
Batch System ◽  
Sludge Bulking ◽  
N Removal ◽  
Soluble Substrate ◽  
Activated Sludge Systems

Laboratory and pilot plant experiments on anoxic selector activated sludge systems were conducted on two wastewaters in some cases supplemented with nitrate, acetate or glucose. To prevent bulking sufficient anoxic selector detention time and nitrate levels must be available to reduce selector effluent soluble COD to below 100 mg/l and to reduce readily metabolizable organic matter to virtually zero (< 1 mg/l). Soluble COD/NO3-N removal stoichiometry is in the range 6.0-6.7. Selector systems have elevated soluble substrate removal and denitrification rates compared to CSTR systems. These rates are not affected greatly by temperature (20-25°C) for CSTR sludges but are for selector sludges. Upon exhaustion of nitrate in a selector soluble COD leaks out of the activated sludge in significant amounts. Thiothrix sp. and type 021N denitrify only to NO2 and at much slower rates than Zoogloearamigera does to N2. A sequencing batch system provides an optimistic estimate of the SVI that can be obtained by an anoxic selector system.

Impact of pretreatment on RO membrane organic fouling: composition and adhesion of tertiary wastewater effluent organic matter

2021 ◽  
Author(s):  
Nadine Siebdrath ◽  
Bertram Skibinski ◽  
Shiju Abraham ◽  
Roy Bernstein ◽  
Robert Berger ◽  
...  
Keyword(s):  
Organic Matter ◽  
Wastewater Effluent ◽  
Effluent Organic Matter ◽  
Membrane Performance ◽  
Organic Fouling ◽  
Ro Membrane

Organic fouling in RO desalination of tertiary wastewater is of major concern in the decline in membrane performance.

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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