SBR 및 MBR 복합 공정을 이용한 선박용 고도수처리장치의 침전시간에 따른 T-N 및 T-P 제거효율 변화 연구 = T-N and T-P Removal Efficiencies on Settling Period in an Advanced Sewage Treatment System for Ships Sewage on SBR and MBR

다국어 초록 (Multilingual Abstract)

This study aimed to assess the removal efficiency for TN and TP depending on whether or not settling is removed in an advanced water treatment system for ships, where sequencing batch reactor (SBR) and membrane bioreactor (MBR) processing is applied, to satisfy the water quality standards of the Marine Environment Protection Committee (MEPC) of the International Maritime Organization (IMO). For these purposes, the concentrations of TN and TP in the inflow and outflow water were measured to calculate the TN and TP removal efficiencies. Water discharged from a bathroom, which was created for the experiment, was used as raw water. Under Condition 1, settling existed, and aeration was conducted for 150 min, settling for 45 min, agitation for 15 min, and settling for 15 min. Under Condition 2, settling did not occur, and aeration was conducted for 180 min and agitation for 60 min. The mixed liquor suspended solids (MLSS) concentration in the reactor was 3,500 mg/L, whereas the aeration rate was 121 L/min and the water production rate was 1.2 L/min. According to the results, the average TN removal efficiency was 42.2% and the average TP removal efficiency was 49.5%, under Condition 1, whereas the average TN removal efficiency was 64.9% and the average TP removal efficiency was 55.6%, under Condition 2. Although the final nutrient levels did not satisfy the water quality standards of MEPC 227(64), the TN and TP removal efficiencies were higher under Condition 2 where no settling occurred.

참고문헌 (Reference)

1 두현욱, "크루즈선기인 오염물질 규제에 관한 국제법 검토와 우리나라 법제 개선방안" 한국해사법학회 24 (24): 307-338, 2012

2 Mi-Hyung Kim, "the Reducing Method of Memrane Fouling in Hybrid Process of Pure Oxygen and Membrane Bio-Reactor for High Organic Wastewater Treatment" Gong ju University 2011

3 Kim Hoi-Jun, "The major decisions of MEPC 64th session" 2012

4 "National Archives of Korea – Shipbuilding Industry"

5 KR, "Marin Environment Projection Committee, 64th session Agenda item 23"

6 Kyoung-Mi Kim, "IThe latest agenda trend of IMO Committees and the related activities of our country" 2008 (2008): 25-30, 2008

7 김경미, "IMO 최근 의제 동향 및 한국의 IMO 활동현황" 해양환경안전학회 15 (15): 111-117, 2009

8 KR, "Briefings of IMO Meeting MEPC 68(11-15 May’2015), NO. IMO-0007-2015"

9 KR, "Briefings of IMO Meeting MEPC 67(13 Oct - 17 Oct 2014), NO. IMO-0028-2014"

10 Bu-Teon Hwang, "A Study on Treatment Characteristics and Application of DAF process in Small Scale SBR System" Keimyung University 2009