Nguyen Trong Quang <br/><br/>
Tapioca starch wastewater treatment by aerobic fluidized bed process 

 - Bangkok :  Asian Institute of Technology,  1986 
 - 74 p. 
 - Thesis ;  no. EV-86-4 .
 - Asian Institute of Technology.  Thesis ;  no. EV-86-4 .
<br/><br/> A research study submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development 
<br/><br/>Thesis (M.Sc.) - Asian Institute of Technology, 1986 
<br/><br/> An aerobic tapered fluidized bed reactor was operated to  study its performance at variable organic loading rates.It was to  be measured in terms of organic removal efficiency and dissolved  oxygen concentrations maintained in the reactor. The uniqueness  of this process is the combined activity of suspended and attached growth microorganlsms ln or anic removal. Attached  lcroorganisms were pre omlnan ln the fluidized sand media while suspended microorganisms were dominant in the volume above the expanded bed in the reactor. The investigation shows the moderate organic carbon removal  efficiency (55-65 %) at medium dissolved pure oxygen of 16.9-18.6 mg/l and low detention time of 6 hours. It is deduced from  the study, that the removal efficiency is dependent upon the  initial waste strength, the influent dissolved oxygen and the reator sizes.   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sewage--Purification--Biological treatment<br/>Factory and trade waste