Research of dissolved oxygen concentration control strategy based on the fuzzy self-tuning PID parameter

2017 ◽  
Author(s):  
Xiaotong Liu ◽  
Weibo Yu
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Control Strategy ◽  
Dissolved Oxygen Concentration ◽  
Self Tuning

Self-tuning control of dissolved oxygen concentration in a batch bioreactor

2009 ◽  
Vol 87 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Suna Ertunc ◽  
Bulent Akay ◽  
Havva Boyacioglu ◽  
Hale Hapoglu
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Dissolved Oxygen Concentration ◽  
Batch Bioreactor ◽  
Self Tuning

Effect of Physicochemical Variables on Algal Autoflotation

1992 ◽  
Vol 26 (7-8) ◽  
pp. 1769-1778 ◽  
Author(s):  
S.-I. Lee ◽  
B. Koopman ◽  
E. P. Lincoln
Keyword(s):  
Dissolved Oxygen ◽  
Oxygen Concentration ◽  
Retention Time ◽  
Contact Time ◽  
Pilot Scale ◽  
Dissolved Oxygen Concentration ◽  
Physicochemical Variables ◽  
Rise Rate ◽  
Mixing Intensity ◽  
Maximum Rise

Combined chemical flocculation and autoflotation were examined using pilot scale process with chitosan and alum as flocculants. Positive correlation was observed between dissolved oxygen concentration and rise rate. Rise rate depended entirely on the autoflotation parameters: mixing intensity, retention time, and flocculant contact time. Also, rise rate was influenced by the type of flocculant used. The maximum rise rate with alum was observed to be 70 m/h, whereas that with chitosan was approximately 420 m/h. The efficiency of the flocculation-autoflotation process was superior to that of the flocculation-sedimentation process.

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