Experimental study of sponge incorporated membrane bioreactor for treatment of organic polluted water

Name: Ratboren Chan

LCSH: Kasetsart University -- Theses. M.S. (Environmental Engineering) 2019

Classification :.LCCS: TD758.5.O75

LCSH: Kasetsart University. -- Department of Environmental Engineering -- Theses

LCSH: Sewage -- Purification -- Organic compounds removal

LCSH: Water -- Pollution

LCSH: Bioreactors

LCSH: Membrane reactors

LCSH: Polyurethanes

Abstract: The study was observed on the effect of polyurethane sponge (PU) incorporated membrane bioreactor (MBR) for the enhancement of nitrogen removal from polluted water. The MBR system with a constant hydraulic retention time of 4 hours and no sludge wastage condition were operated under absence (1st condition) and presence (2nd condition) of 10% (v/v) PU sponge cube medium. At 1st condition, BOD and COD removals were 99% and 84% while NH3-N and TN removals were 97% and 38%, respectively. There were no significant differences of 9 BOD, COD, and NH3-N removal at the 2nd condition, but TN removal increased by approximately 15%. Likewise, the denitrifying rate at the 2nd condition was increased compared to the rate at the 1st condition. Consequently, batch experiments using biomass in different forms in terms of suspended sludge and attached sludge on the sponge from MBR were conducted to investigate the possibility of simultaneous nitrification and denitrification process. The results showed that all types of biomass from MBR were potential to achieve a high level of nitrification and denitrification. Especially, the experiment with attached sponge biomass incorporated suspended biomass showed a high denitrification rate which led the result of total nitrogen removal was enhanced. Overall, sponge incorporated MBR could enhance nitrogen removal and can maintain the lifespan of MBR due to its effectiveness in the mitigation of membrane fouling.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Chart Chiemchaisri

Role: Thesis Advisor

Name: Wilai Chiemchaisri

Role: Thesis CO-Advisor

Created: 2019

Modified: 2025-07-10

Issued: 2025-07-10

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2562/ratboren-cha-all.pdf

CallNumber: TD758.5.O75 .R38

eng

DegreeName: Master of Engineering

Level: Master's Degree

Descipline: Environmental Engineering

Grantor: Kasetsart University

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