Evaluation of the different integrated pre-treatment processes for the ceramic based microfiltration

被引：4
作者：
Woo Y.C. [1 ,2 ]
Kim Y.S. [3 ,4 ]
Lee J.J. [5 ]
Choi Y. [6 ]
Kim H.-S. [3 ]
机构：
[1] Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), 283 Goyang-Daero, Ilsanseo-Gu, Goyang-Si, 10223, Gyeonggi-Do
[2] Department of Civil and Environment Engineering, University of Science and Technology (UST), 217 Gajeong-Ro, Yuseong-Gu, Daejeon
[3] Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin-si, 449-728, Gyeonggi-do
[4] Korea Environment Corporation, 42 Hwangyeong-ro, Seo-gu, Incheon
[5] BKT Inc., 25 Yuseong-Daero 1184 Beon-gil, Yuseong-Gu, Daejeon
[6] Extreme Engineering Research Center (E2RC), Korea Institute of Civil Engineering and Building Technology (KICT), 283 Goyang-Daero, Ilsanseo-Gu, Goyang-Si, 10223, Gyeonggi-Do
来源：
Process Safety and Environmental Protection | 2020年 / 139卷
关键词：
Adsorption; Ceramic based microfiltration; Coagulation; Flocculation; Integrated pre-treatment;
D O I：
10.1016/j.psep.2020.04.018
中图分类号：
学科分类号：
摘要：
In the present study, in order to enhance the performance of ceramic microfiltration (MF) water treatment process, several pre-treatment processes such as adsorption, coagulation, flocculation, and sedimentation were examined under harsh conditions (kaolin of 50 mg/L with a humic acid of 1000 mg/L). A jar-test of batch coagulation/flocculation (C/F) experiments showed that the optimum coagulant (A-PAC, 10.6 % as Al2O3) dosage was 5 mg/L. Moreover, batch adsorption experiments revealed that the powdered activated carbon dosage of 20 mg/L with stirring for 30 min was the optimum condition. When the ceramic MF process was operated at the flux of 5 m3/m2/d, the implication of integrated coagulation/flocculation/adsorption (C/F/A-Mem) could lead to a better improvement of the removal ratio (DOC, UV254, and turbidity) compared with other integrated procedures. In terms of the filtration resistances, the integrated pre-treatment and ceramic MF processes are mitigating fouling problems compared with the single ceramic MF process, which means that the single ceramic MF process was not effective to operate with a stable TMP and produce suitable water qualities of the permeate water. Based on the results, the integrated C/F/A followed by the ceramic MF process was the best approach to produce better qualities water with long-term stability. © 2020 Institution of Chemical Engineers
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页码：210 / 217
页数：7
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