DOI QR코드

DOI QR Code

저에너지 마이크로버블 장치를 이용한 고농도 암모니아 공장 폐수 처리

Industrial Wastewater Treatment Containing High Concentration of Ammonia with Low Energy Micro-Bubble Reactor

  • 정재억 (부산가톨릭대학교 환경공학과) ;
  • 정용준 (부산가톨릭대학교 환경공학과)
  • Jung, Jae-Ouk (Department of Environmental Engineering, Catholic University of Pusan) ;
  • Jung, Yong-Jun (Department of Environmental Engineering, Catholic University of Pusan)
  • 투고 : 2016.07.29
  • 심사 : 2016.08.12
  • 발행 : 2016.08.31

초록

고농도의 암모니아 함유 공장 폐수를 대상으로 마이크로버블이 발생되는 장치를 이용하여 암모니아 탈기에 의한 처리 가능성을 평가하였다. 기존 처리장은 pH를 12.5로 유지하면서 반응 조내의 온도를 $30^{\circ}C$에서 $70^{\circ}C$로 상승시켜 72시간 동안 고온 탈기 시켰을 경우 T-N의 제거효율은 70.3%에서 90.5%로 증가하였다. 온도를 $30^{\circ}C$로 유지하면서 유입수의 T-N 농도가 9,120~12,955 mg/L인 폐수를 20시간 동안 마이크로버블에 의한 지속적인 접촉으로 상온 탈기 시킨 결과 T-N 제거율을 90.5~91.9%로 확보하였으며, 운전기간 동안의 pH는 12.3에서 10.1로 소폭 감소하였다.

This study was carried out to evaluate the feasibility of air-stripping by DIWS(Dip Injection Wet Scrubber) system on high concentration of ammonia wastewater more than 10,000 mg/L. In the case of changing temperature from $30^{\circ}C$ to $70^{\circ}C$ maintaining pH 12.5 within the 72 hours, the removal efficiency of T-N by the present treatment plant was increased to 90.5% which was initially kept 70.3%. Although the high concentration of T-N with 9,120~12,955 mg/L was treated by micro-bubble through DIWS system maintaining the temperature of $30^{\circ}C$ within the 20 hours, the removal efficiency of T-N reached 91.9%, which indicated the possibility of air-stripping.

키워드

참고문헌

  1. Han, SH, Kim, YY, Sung YG, Park IB, Cho, DH, Nam WK, Kim, CG, Oh JK (2015). Characteristics of organics and ammonia nitrogen discharged by pollution source from human living. J. of Korea Society on Water Environment, 31(4), pp. 377-386. https://doi.org/10.15681/KSWE.2015.31.4.377
  2. Jung, YJ, Jung JO, Kim YJ (2015). Treatment of hydrochloric acid from regeneration and scrubber system of cold rolling mill plant with micro-bubble. J. of Wetlands Research, 17(2), pp. 118-123. [Korean Literature] https://doi.org/10.17663/JWR.2015.17.2.118
  3. Kim, YJ, Jung, JO, Jung, YJ (2015). Complex mal-odor treatment of foodwaste with micro-bubble generated from enhanced wet scrubber. J. of Environmental Science International, 24(1), pp. 73-79. [Korean Literature] https://doi.org/10.5322/JESI.2015.24.1.73
  4. Kim, YJ, Jung JO, Jung YJ (2015). Hydrochloric acid gas removal from iron and steel industry using micro-bubbles of a dip injection wet scrubber system. J. of Wetlands Research, 17(1), pp. 75-79. [Korean Literature] https://doi.org/10.17663/JWR.2015.17.1.075
  5. Lee, HY, Oh, JK, Kim, SG (2003). Characteristics of air stripping for recycling of ammonia in aqueous solutions. J. of Korean Inst. of Resources Recycling, 12(3), pp. 31-37. [Korean Literature]
  6. Lee, SA, Youn, AR, Kwon KH, Kim, BS, Kim, SH, Cha, HS (2009). Washing effect of micro-bubbles and changes in quality of lettuce(Lactuca sativa L.). Korean J. Food Preserv., 16(3), pp. 321-326. [Korean Literature]
  7. Parmar, R, Majumder, SK (2013). Microbubble generation and micro bubble-aided transport process intensification-A state of the art report. Chemical Engineering and Processing: Process Intensification, 64, pp. 79-97. https://doi.org/10.1016/j.cep.2012.12.002
  8. Shin, DY, Oh, YK (2001). A study on the decompressed ammonia stripping from ammonia contained wastewater. Kor. J. Env. Hlth. Soc., 27(1), pp. 93-99. [Korean Literature]
  9. Yoon, TK, Lee, GC, Jung, BG, Han, YR, Sung, NC (2011). Effects of operating parameters on the removal performance of ammonia nitrogen by electrodialysis. Clean Technology, 17(4), pp. 363-369. [Korean Literature]