순환공정을 이용한 MCDI(Membrane Capacitive deionization) 탈착과정의 TDS 농축특성에 관한 연구

서지정보

ㆍ발행기관 : 대한상하수도학회 ㆍ수록지정보 : 상하수도학회지 / 36권 / 6호
ㆍ저자명 : 오창석, 오현제

목차

ABSTRACT
1. 서 론
2. 실험장치 및 방법
2.1 MCDI 모듈
2.2 운전조건
3. 결 과
3.1 MCDI 모듈의 운영방법에 따른 처리수 TDS 농도및 수율변화
3.2 MCDI 모듈의 운영방법에 따른 탈착폐수 TDS 농도변화
3.3 순환공정을 이용한 MCDI 탈착수의 TDS 농축특성
4. 결 론
사 사
References

영어 초록

The CDI (Capacitive deionization) is one of the desalination technologies that use a carbon material electrode with large surface area and excellent electrical conductivity. Recently, research on a MCDI (Membrane Capacitive deionization) process, which is a combination of an ion-exchange membrane, has been actively conducted. In this study, we tried to find out the water quality of treated water and the concentration characteristics of concentrated water through TDS analysis by MCDI conventional and circulation process. In producing treated water, there was no significant difference in adsorption efficiency between MCDI conventional and circulation process. It was confirmed that both processes adsobed more than 96 %. However, the MCDI conventional process showed a low yield of 50 %, whereas the MCDI circulation process showed a high yield of 97.6 %. It's because, the wasted water was reused at desorption. In the case of the TDS concentration using MCDI circulation process, as the cycle progressed, the TDS concentration was concentrated up to 1,300 mg/L, but the rate gradually decreased. It is believed that this is because the volume of the concentrated water tank is limited, and the amount of soluble ions gradually decreases. As a result of analyzing the wasted water at MCDI circulation process through Ion Chromatography, it was confirmed that the concentration of all ions were concentrated. However, there was no significant difference in the types and proportions of analyzed ions. It is judged that the types and concentration of ions do not have a significant effect on adsorption and desorption in the MCDI circulation process.

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