|
DOI : 10.17640/KSWST.2018.26.6.61 , Vol.26, No.6, 61 ~ 73, 2018
|
| Title |
| Evaluation of High Flux Combined with Pretreatment Process for Application of Decentralized Water Supply System with Ceramic Membrane |
| 강준석 Joon-seok Kang , 박서경 Seo Gyeong Park , 이정은 Jeong Eun Lee , 강소연 So Yeon Kang , 이정준 Jeong Jun Lee , 쿠엔보 Vo Thi Kim Quyen , 김성수 Seongsu Kim , 김한승 Han-seung Kim |
|
|
|
| Abstract |
| In this study, applicability of the decentralized water supply system were investigated by the high flux evaluation using ceramic membrane with combined pretreatment process. A) filtration process increased the transmembrane pressure of 1.4 kPa and 89.5 kPa on 2 and 5 ㎥/㎡ㆍd of filtration flux, respectively, the physical backwashing recovery rate were less than 28.6%. The (B) Coag./Floc. - Sedi. combined process with 4 mg / L of A-PAC showed that the transmembrane pressure increased to within 6 kPa, the physical backwashing recovery rate was over 37.9 % higher than (A) Filtration process. (C) Coag./Floc. combined process showed an increase of transmembrane pressure compared with (B) Coag./Floc. - Sedi. combined process, physical backwashing recovery rate was over 84%. As a result of the membrane fouling analysis using the resistance in series model, the combined pretreatment process showed that the cake resistance (Rc) was more than 92% at membrane filtration flux of 2 ㎥/㎡ㆍd. In the (C) Coag./Floc. combined process, cake resistance(Rc) was over 86% on high flux conditions. The coagulation floc contained in influent was removed by the membrane, and the cake layer formed with the removed floc was identified as reversible fouling resistance which could be recovered by physical backwashing. The decentralized water supply system, which has the limitation of site area and installation space, is considered to could be operation of high flux of ceramic membrane by applying (C) Coag./Floc. combined process without sedimentation process. |
|
|
| Key Words |
| Ceramic membrane, Coagulation, Combined process, Decentralized water supply system, Pretreatment |
|
|
|
|
|
PDF