A NEW ACTIVATED SLUDGE PROCESS CONTROL TEST UNCOVERS SECONDARY CLARIFIER INEFFICIENCIES

2001 ◽  
Vol 2001 (15) ◽  
pp. 321-337 ◽  
Author(s):  
Eric J. Wahlberg ◽  
Sidney Biesterfeld ◽  
Greg Farmer ◽  
David Kinnear ◽  
Leonard Robb
Keyword(s):  
Process Control ◽  
Activated Sludge ◽  
Activated Sludge Process ◽  
Control Test ◽  
Secondary Clarifier

The Basics of Automated Activated Sludge Process Control: Keep It Simple

2004 ◽  
Vol 2004 (11) ◽  
pp. 377-394
Author(s):  
Edmund Kobylinski ◽  
Andrew Shaw ◽  
Mark Steichen ◽  
Howard Analla
Keyword(s):  
Process Control ◽  
Activated Sludge ◽  
Activated Sludge Process

Using the Oxidation Index (OXI) as an Activated Sludge Process Control Tool

2011 ◽  
Vol 2011 (10) ◽  
pp. 5405-5421
Author(s):  
Ronald G. Schuyler ◽  
Joseph R. Tamburini ◽  
Steven J. Tamburini
Keyword(s):  
Process Control ◽  
Activated Sludge ◽  
Activated Sludge Process ◽  
Oxidation Index ◽  
Control Tool

Activated Sludge Process Control by Behaviour of Secondary Settling Tanks

1987 ◽  
Vol 19 (7) ◽  
pp. 1207-1210 ◽  
Author(s):  
G. d'Antonio ◽  
P. Carbone
Keyword(s):  
Process Control ◽  
Activated Sludge ◽  
Mathematical Models ◽  
Activated Sludge Process ◽  
Secondary Settling

The mathematical models of activated sludge kinetics and solids flux have been investigated; the constants have been derived experimentally. By developing the equations of the two models, an operational chart for activated sludge process control has been plotted.

Adaptation of microbial communities in activated sludge to 1-decyl-3-methylimidazolium bromide

2016 ◽  
Vol 74 (5) ◽  
pp. 1227-1234 ◽  
Author(s):  
Dorota Gendaszewska ◽  
Ewa Liwarska-Bizukojc
Keyword(s):  
Activated Sludge ◽  
Oxygen Demand ◽  
Biotic Index ◽  
Activated Sludge Process ◽  
Control Test ◽  
Chemical Oxygen Demand Removal ◽  
Microbial Composition ◽  
Mean Values ◽  
Activated Sludge System ◽  
High Level

The effects of 1-decyl-3-methylimidazolium bromide on activated sludge process and microbial composition were investigated. Ionic liquid (IL) was dosed continuously to the laboratory activated sludge system at an influent concentration from 1 to 20 mg l−1 for about 1 month. As compared to the control test, mean values of degree of chemical oxygen demand removal and degree of biochemical oxygen demand removal were almost remaining constant at a high level, equaling 92.6% and 98.1%, respectively. In addition, no influence of IL on size and shape of flocs was observed. The values of the sludge biotic index indicate that sludge exposed on IL was stable and very well colonized with good biological activity. Increases in Proteobacteria (mainly Variovorax sp., Vogesella sp., Hydrogenophaga sp.), Bacteroidetes (mainly Lewinella sp., Haliscomenobacter sp., Runella sp.) and Nitrospirae were detected in sludge adapted to IL compared to the control system. The results showed that activated sludge can adapt to IL present in wastewater.

ACTIVATED-SLUDGE PROCESS CONTROL: INSTRUMENTATION AND COMPUTER

1974 ◽  
pp. 317-327
Author(s):  
CARMEN F. GUARINO ◽  
ELMER F. BALLOTTI ◽  
MICHAEL D. NELSON ◽  
ALLAN B. EDWARDS
Keyword(s):  
Process Control ◽  
Activated Sludge ◽  
Activated Sludge Process
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