학술논문
하수재이용 막여과 공정에서 약품 역세에서의 물리세정 영향 비교 평가
Comparison of physical cleaning applied to chemical backwashing of wastewater reuse membrane system
Comparison of physical cleaning applied to chemical backwashing of wastewater reuse membrane system
Document Type
Article
Author
이창하 / Chang Ha Lee; 김영훈 / Young Hoon Kim; 전민정 / Min Jung Jeon; 이용수 / Yong Soo Lee; 장암 / Am Jang; 김형수 / Hyung Soo Kim
Source
상하수도학회지 / Journal of the Korean Society of Water and Wastewater. Dec 15, 2011 25(6):981
Subject
Language
Korean
ISSN
1225-7672
Abstract
Biologically treated water contains a large quantity of organic matters and microorganisms which can cause various problems to membrane. The membrane fouling occurred by these reasons is hard to control by single physical cleaning. This study analyzes the efficiency of aeration with chemical backwashing and foulants removal during chemical backwashing. The cleaning efficiency improves when the chemical concentration is high and the contact time of chemical is long. Chemical backwashing with aeration shows exceptional cleaning efficiency which leads the physical cleaning is required during chemical backwashing since it forms flow inside the membrane submerged tank. From the foulants removal analysis, the particles such as turbidity and TOC removal rate increase when the aeration is applied. Dissolved matter of DOC and UV254 removal is dependent on higher chemical concentration. According to FT-IR analysis, one of major foulants, the polysaccharide is controlled by the chemical backwashing with aeration condition.