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A Study on Removal of Natural Organic Matter (NOM) and Application of Advanced Water Treatment Processes for Controlling Disinfection By-Products

소독부산물 제어를 위한 자연유기물(NOM) 제거와 고도정수처리공정 적용에 관한 연구

Kim, Hyun Gu;Eom, Han Ki;Lee, Dong Ho;Joo, Hyun Jong
김현구;엄한기;이동호;주현종

  • Received : 2015.09.02
  • Accepted : 2015.09.22
  • Published : 2015.09.30

Abstract

Natural Organic Matter (NOM) is a precursor of disinfection by products. Recently, with the increase in NOM concentration caused by a large amount of algae, the creation of disinfection by-products is becoming a big issue. Therefore, in this study, PAC+Membrane+F/A hybrid process was organized to control disinfection by-products in small-scale water treatment plants. The optimal dosage of PAC was set at 20 mg/L through Lab. scale test. Also, it is judged that NOM concentration must be less than 1.0 mg/L to meet the recommended criteria of drinking water quality monitoring items of disinfection by-products during chlorination. The existing conventional water treatment process was compared to the independent F/A process and the PAC+Membrane+F/A hybrid process through pilot plant operation, and the result showed that there is a need to apply an advanced water treatment process to remove not only NOMs but also Geosmin caused by algae. Accordingly, it is considered that applying the PAC+Membrane+F/A process will help in controling a clogged filter caused by a large amount of algae and disinfection by-products created by chlorination and can be used as an advanced water treatment process to meet the recommended criteria of drinking water quality monitoring items.

Keywords

F/A;Membrane;NOM;Powdered Activated Carbon;TOC

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Acknowledgement

Supported by : 환경부