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The New Jersey Institute of Technology's
Electronic Theses & Dissertations Project

Title: Optimization of nitrogen removal in sequencing batch reactor
Author: Poonyachat, Suppakit
View Online: njit-etd2001-010
(ix, 40 pages ~ 3.1 MB pdf)
Department: Department of Civil and Environmental Engineering
Degree: Master of Science
Program: Environmental Engineering
Document Type: Thesis
Advisory Committee: Mukherjee, Sudhi (Committee chair)
Hsieh, Hsin Neng (Committee member)
Wecharatana, Methi (Committee member)
Date: 2001-01
Keywords: Sequencing Batch Reactor
Nitrogen
Denitrification
Effluent Concentration
MLVSS (Biomass Concentration)
Availability: Unrestricted
Abstract:

Operating parameters for sequencing batch reactor have the influenceon each substrate concentration. Concentration profile changes as operationparameters are changed. The study was conducted to model the variationin effluent concentration from sequencing batch reactor. MLVSS and cycletime are the parameters that were varied. Concentration in Fill, React,and Settle Period were calculated by using kinetic equations.

The results can show that these parameters have effects on the concentrationprofile. The increase of MLVSS can lower the concentration of BOD andammonium concentration in React period. Increasing MLVSS can show thatmore substrate utilization and nitrification process occur more rapidly.Concentration of nitrate at the end of settle period varies with theMLVSS concentration in the system. Cycle time is another parameter thatshows the effect on concentration profiles. The increasing of reacttime provides more time for biomass to react and makes the BOD effluentand ammonium concentration decrease. Settle period, which is anoxic,makes the system in denitrification environment influences on nitrateremoval. When settle period decreases, nitrate has less time to transformto nitrogen gas.


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