본 총설은 다양한 저널 게재 논문으로부터 분리막 및 광촉매의 혼성 정수/하수 처리 공정을 요약하였다. 이 총설에는 (1) 분리막 광촉매 반응기(membrane photoreactor, MPR), (2) 분리막 결합 광촉매 공정에서 막오염 관리, (3) 유기 오염물의 분해를 위한 광촉매 분리막 반응기, (4) 정수처리용 막분리 공정과 광촉매 분해의 결합, (5) 휴믹산 분해를 위한 광촉매 및 세라믹 막여과의 혼성공정, (6) 활성슬러지 여과를 위한 한외여과의 막오염에 이산화티타늄나노입자의 영향, (7) 정수처리용 광촉매 및 정밀여과의 혼성시스템, (8) 선박 평형수 처리용 한외여과 및 광촉매의 혼성공정 및 (9) 분리막 및 광촉매 코팅 프로필렌 구의 혼성수처리 공정이 포함되어 있다.
본 총설은 다양한 저널 게재 논문으로부터 분리막 및 광촉매의 혼성 정수/하수 처리 공정을 요약하였다. 이 총설에는 (1) 분리막 광촉매 반응기(membrane photoreactor, MPR), (2) 분리막 결합 광촉매 공정에서 막오염 관리, (3) 유기 오염물의 분해를 위한 광촉매 분리막 반응기, (4) 정수처리용 막분리 공정과 광촉매 분해의 결합, (5) 휴믹산 분해를 위한 광촉매 및 세라믹 막여과의 혼성공정, (6) 활성슬러지 여과를 위한 한외여과의 막오염에 이산화티타늄 나노입자의 영향, (7) 정수처리용 광촉매 및 정밀여과의 혼성시스템, (8) 선박 평형수 처리용 한외여과 및 광촉매의 혼성공정 및 (9) 분리막 및 광촉매 코팅 프로필렌 구의 혼성수처리 공정이 포함되어 있다.
In this review article, hybrid water/wastewater treatment processes of membrane and photocatalyst were summarized from papers published in various journals. It included (1) membrane photoreactor (MPR), (2) fouling control of a membrane coupled photocatalytic process, (3) photocatalytic membrane reac...
In this review article, hybrid water/wastewater treatment processes of membrane and photocatalyst were summarized from papers published in various journals. It included (1) membrane photoreactor (MPR), (2) fouling control of a membrane coupled photocatalytic process, (3) photocatalytic membrane reactors for degradation of organic pollutants, (4) integration of photocatalysis with membrane processes for purification of water, (5) hybrid photocatalysis and ceramic membrane filtration process for humic acid degradation, (6) effect of $TiO_2$ nanoparticles on fouling mitigation of ultrafiltration membranes for activated sludge filtration, (7) hybrid photocatalysis/submerged microfiltration membrane system for drinking water treatment, (8) purification of bilge water by hybrid ultrafiltration and photocatalytic processes, and (9) Hybrid water treatment process of membrane and photocatalyst-coated polypropylene bead.
In this review article, hybrid water/wastewater treatment processes of membrane and photocatalyst were summarized from papers published in various journals. It included (1) membrane photoreactor (MPR), (2) fouling control of a membrane coupled photocatalytic process, (3) photocatalytic membrane reactors for degradation of organic pollutants, (4) integration of photocatalysis with membrane processes for purification of water, (5) hybrid photocatalysis and ceramic membrane filtration process for humic acid degradation, (6) effect of $TiO_2$ nanoparticles on fouling mitigation of ultrafiltration membranes for activated sludge filtration, (7) hybrid photocatalysis/submerged microfiltration membrane system for drinking water treatment, (8) purification of bilge water by hybrid ultrafiltration and photocatalytic processes, and (9) Hybrid water treatment process of membrane and photocatalyst-coated polypropylene bead.
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문제 정의
The aim of the presented work was the investigation on the possibility of application of the hybrid photocatalysis/membrane processes system for removal of azo dyes (Acid Red 18, Direct Green 99 and Acid Yellow 36) from water. The photocatalytic reactions were conducted in the flow reactor with immobilized photocatalyst bed and in the suspended system integrated with ultrafiltration (UF).
제안 방법
For evaluating the role of membrane filtration, adsorption, and photo-oxidation in the hybrid water treatment process of the tubular ceramic MF and the photocatalyst-coated PP beads with the periodic air back-flushing, the process with the PP beads without UV light (MF+TiO2), and only MF without any PP beads and UV (MF) were performed at HA 6 mg/L, respectively. And then, they were compared with the hybrid process of MF and the PP beads with UV light (MF+TiO2+UV).
12. In this study, filtration test was performed at the condition of high flux and low crossflow velocity. Furthermore, the MLSS concentration of mixed liquor was high (7,000 mg/L).
Thus there have been great efforts for fouling mitigation. In this study, two types of TiO2 immobilized ultrafiltration membranes (TiO2 entrapped and deposited membranes) were prepared and applied to activated sludge filtration in order to evaluate their fouling mitigation effect. Membrane performances were changed by addition of TiO2 nanoparticles to the casting solution.
The solution after the photocatalytic reaction was applied as feed in nanofiltration (NF) or membrane distillation (MD). The changes of various parameters, including concentration of dyes, pH and conductivity of the solution, and TOC and TDS contents were analyzed during the process. It was found that the solutions containing the model azo dyes could be successfully decolorized during the photocatalytic processes applied in the studies.
대상 데이터
8. The main component of the system was the flow reactor with immobilized catalyst bed. The reactor was built of quartz tubes partly covered with TiO2 particles.
Photodegradation tests in the membrane reactors (total volume from 400 to 700 mL) were carried out coupling the batch to a re-circulation cell containing various types of flat sheet membranes which were able to retain the suspended catalyst and partially selective to the pollutant. The membranes were : NTR7410 and NTR7450 (Nitto Denko); N30F and NF-PES-010 (Hoechst); MPCB0000R98 (SEPAREM). The measured permeate flux was in the range 5-30 l/h m2 at 4 bar and all membranes showed both a rejection and a capacity to adsorb the pollutant with a transitory phase varying from 80 to 400 min at 4 bar.
The main component of the system was the flow reactor with immobilized catalyst bed. The reactor was built of quartz tubes partly covered with TiO2 particles.
성능/효과
It means that the PP beads could not affect the treatment of suspended particles like kaolin in this hybrid process. However, in the hybrid process of the same MF and PES beads, the treatment efficiency of turbidity increased a little from 95.7% to 98.7%, which were a little lower efficiency than those of the PP beads, as increasing the PES beads concentration from 5 g/L to 40 g/L. It means that the PP beads were the more efficient to remove the turbid materials than the PES beads in the hybrid water treatment process[28].
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