1 AIT Asian Institute of Technology

Nutrient removal in intermittent activated sludge process

AuthorLee, Kauk Pein
Call NumberAIT Thesis no.EV-87-6
Subject(s)Sewage--Purification--Activated sludge process
NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
AbstractPotential of nutrient removal in Intermittent Activated Sludge Process w s studied with three laboratory - scale reactors by using synthetic wastewater containing organic matter and am onia as substrate. Three different operating strategies were applied in order to find the potential of nitrogen and phosphorus r mova1. Different duration of anoxic/ anaerobic. anoxic nd aerobic phases were applied in three reactors of each strategy. Based on the results from this study. nitrifying bacteria were able to survive and also gave satisfactory performance under the sequence of anoxic - aerobic environment. Applying sequence of anoxic - aerobic phases in the reactor during long period of substrate feeding can get the relatively high nitrogen removal efficiency. Nitrogen removal by endogenous denitrification also play significant role in the strategy where short feeding period was used. Biological phosphorus removal, so called "luxury uptake". was not observed in this study. High removal (95 - 99%> of TOC w maintained in all three strategies of intermittent activated sludge process.
Year1987
TypeThesis
SchoolSchool of Environment, Resources, and Development (SERD)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSEnvironmental Engineering and Management (EV)
Chairperson(s)Hanaki, K.
Examination Committee(s)Orth, H.M. ;Shin, H.S.
Scholarship Donor(s)French Government
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1987


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