김현철 유명진 이석헌 2024-01-21T04:45:13Z 2024-01-21T04:45:13Z 2021-09-06 2005-06 1225-7672 https://pubs.kist.re.kr/handle/201004/136411 Dispersion of coagulant should be completed in a fraction of a second before the metal hydroxide precipitate has form. For the reason so-called pump diffusion flash mixing (PDFM) have been proposed, and PDFM is one of reasonable methods to quickly disperse the hydrolyzing metal salts. In this study, therefore, we attempt to understand the difference of removal characteristics of natural organic matter (NOM) between pump diffusion flash mixing (PDFM) and conventional rapid mixing (CRM) for coagulation in a water treatment system, and to enhance the removal of NOM through the improved mixing process. DOC and turbidity removal by PDFM higher than those by CRM, while SUVA value of water treated by PDFM was high as compared with that by CRM. Hydrophilic NOM was more effectively removed by PDFM than CRM, since charge neutralization effect increased by quick dispersion. The DBP formation potentials due to NOM was effectively reduced by the improved mixing (i.e., PDFM) for coagulation and could be controlled through decrease in concentration of precursor rather than reduction of activity with disinfectant. 대한상하수도학회 정수처리시 천연유기물질의 제거에 대한 급속혼화유형의 영향 Influence of Different Mixing Types on the Removal of Natural Organic Matter in Water Treatment Article 2 상하수도학회지, v.19, no.3, pp.370 - 377 상하수도학회지 19 3 370 377 kci ART001125742 천연유기물질 소독부산물 가압수분사순간혼화 전하중화 natural organic matter (NOM) disinfection by-products (DBPs) pump diffusion flash mixing (PDFM) charge neutralization natural organic matter (NOM) disinfection by-products (DBPs) pump diffusion flash mixing (PDFM) charge neutralization