Title Page
Contents
요약문 8
Abstract 10
1. Introduction 15
2. Materials and Methods 21
2.1. Experimental set-up and operation of hybrid AFBR-SDCMD process 21
2.2. Batch experiment with SDCMD 25
2.3. Continuous operation of SDCMD 26
2.4. Analysis and characteristics of membrane fouling 27
3. Results and Discussion 29
3.1. AFBR performance 29
3.2. Batch experiments with SDCMD: Effects of transmembrane temperature on the rejection of ammonia nitrogen and phosphate 31
3.3. Batch experiments with SDCMD: Effect of MD bulk solution pH on the rejection of ammonia nitrogen 34
3.4. Long-term operation of hybrid AFBR-SDCMD process 37
3.5. Characteristics of foulant materials in SDCMD 42
4. Conclusions 48
5. References 49
Table 1. Characteristics of synthetic wastewater as feed solution and effluent of AFBR system 30
Fig. 1. Experimental set-up of laboratory scaled AFBR-SDCMD hybrid process (P: gear pump, T: Thermometer, pH: pH meter) 24
Fig. 2. SDCMD permeate flux (a), rejection efficiency of NH4+-N, PO43-, and DOC (b), and mass of HH4+-N to permeate volume filtered through membrane...[이미지참조] 33
Fig. 3. NH4+-N rejection efficiency with respect to SDCMD bulk pH[이미지참조] 36
Fig. 4. Mass of NH4+-N per permeate volume (g/L) filtered through membrane at different bulk pHs in SDCMD reactor[이미지참조] 36
Fig. 5. Concentration of NH4+-N (a), PO43-(b), and DOC (c) in SDCMD Bulk solution and rejection efficiency of NH4+-N, PO43-, and DOC (d) during...[이미지참조] 39
Fig. 6. SDCMD permeate flux during operation time 41
Fig. 7. SEM-EDX analysis of (a) SDCMD bulk (b) after water cleaning (c) after sonication 43
Fig. 8. FTIR spectra of SDCMD bulk and solutions from water cleaning and sonication cleaning 45
Fig. 9. Concentration of total carbohydrate and protein concentration in SMP/EPS from SDCMD bulk and Membrane surface 45
Fig. 10. Flux recovery ratio after sonication and chemical cleaning 47