단위공정별 기초실험을 통한 다기능 융복합부도의 설계·운전인자 도출 = Design and operating parameters of multi-functional floating island determined by basic experiments of unit processes

다국어 초록 (Multilingual Abstract)

Water quality improvement processes for stagnant area consist mainly of technologies applying vegetation and artificial water circulation, and these existing technologies have some limits to handle pollution loads effectively. To improve the purification efficiency, eco-friendly technologies should be developed that can reinforce self-purification functions.
In this study, a multi-functional floating island combined with physical · chemical · biological functions (① flotation and oxidization using microbubbles, ② vegetation purification and ③ bio-filtration with improved adsorption capacity) has been developed and basic experiments were performed to determine the optimal combination conditions for each unit process. It has been shown that it is desirable to operate the microbubble unit process under conditions greater than 3.5 kgf/cm2. In vegetation purification unit process, Yellow Iris (Iris pseudacorus) was suggested to be suitable considering water quality, landscape improvement and maintenance. When granular red-mud was applied to the bio-filtration unit process, it was found that T-P removal efficiency was good and its value was also stable for various linear velocity conditions.
The appropriate thickness of filter media was suggested between 30 and 45 cm. In this study, the optimal design and operating parameters of the multi-functional floating island have been presented based on the results of the basic experiments of each unit process.

참고문헌 (Reference)

1 이종성, "현장실험을 통한 수생식물의 수질정화 효과에 관한 연구" 한국환경과학회 14 (14): 937-944, 2005

2 임현만, "하천 구역에서 물질순환을 고려한 자연정화기술 개발" 응용생태공학회 3 (3): 213-214, 2016

3 김병준, "식생을 이용한 수질정화효율 평가" 한국수처리학회 23 (23): 49-55, 2015

4 권예랑, "수생식물을 이용한 수질정화에 관한 연구" 대한환경공학회 25 (25): 2-420, 2003

5 조은혜, "수생식물에서 산화아연 나노물질의 축적성 평가" 한국환경분석학회 20 (20): 193-199, 2017

6 변화근, "소양호 인공식물섬의 어류 서식 및 어란 부착 효과" 한국환경생태학회 28 (28): 559-565, 2014

7 박채홍, "부유습지를 이용한 부영양수계 현장 수질개선 효과" 한국하천호수학회 46 (46): 116-127, 2013

8 박진식, "부레옥잠과 미나리를 이용한 연속식 하수처리에서 COD, N 및 P의 제거" 한국환경농학회 21 (21): 10-, 2002

9 오경희, "대청호에 설치된 수중폭기시설이 조류 발생에 미치는 영향" 대한환경공학회 35 (35): 268-275, 2013

10 양홍모, "농업용 저수지에 설치한 인공식물섬에 의한오염물질 농도의 변화" 한국환경복원기술학회 9 (9): 23-32, 2006

11 Lee, H. H. M., "Selection of suitable plants for artificial floating islands - comparisons of vegetation structure and growth of four emergent macrophytes" 4 : 57-66, 2001

12 Yue, Q., "Research on the characteristics of red mud granular adsorbents(RMGA) for phosphate removal" 176 : 741-748, 2010

13 임수빈, "Red mud를 이용한 중금속 Cd 및 Pb의 흡착제거 특성" 한국지반환경공학회 12 (12): 39-47, 2011

14 강구, "Red Mud의 산처리 및 열처리가 불소 제거에 미치는 영향" 대한환경공학회 37 (37): 210-217, 2015

15 Agarwal, A., "Principle and applications of microbubbles and nanobubble technology for water treatment" 84 : 1175-1180, 2011

16 Cha, H. S., "Present state and future prospect for microbubble technology" 22 : 544-552, 2009

17 Li, Y., "Phosphate removal from aqueous solutions using raw and activated red mud and fly ash" 137 : 374-383, 2006

18 Matsumoto, M, "Nano bubble-size dependence of surface tension and inside pressure" 40 : 546-553, 2008

19 Takahashi, M., "Free-radical generation from collapsing microbubbles in the absence of a dynamic stimulus" 111 : 1343-1347, 2007

20 Reddy, K. R., "Fate of nitrogen and phosphorus in a wastewater retention reservoir containing aquatic macrophytes" 12 : 137-141, 1983

21 한무영, "DAF 에서 압력에 따른 미세기포의 크기특성" 대한상하수도학회 16 (16): 177-182, 2002

22 Mei-Yan Jin, "Comparative Study on Biological Technology in Artificial Floating Island: Application of Media and Daphnia to Algal Biomass Control" 한국환경영향평가학회 27 (27): 83-91, 2018

23 Ra, K. H., "Aquatic plants for wastewater treatment" 22 : 49-55, 1996

24 Chen, S., "Algae separation from urban landscapewater using a high density microbubble layer enhanced by micro-flocculation" 70 : 811-818, 2014

25 Park, S. K., "Algae and nutrient removal by vegetated artificial floating island" 41 : 93-98, 2008

26 Lee, K. S., "A study on the floating island for water quality improvement of a reservoir" 18 : 77-82, 1999

27 Cho, D. H., "A study on the behavior micro-nano bubble for concentration oxygen stabilization techniques" The Korean Institute of Electrical Engineers 2010