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중화약품과 마이크로버블 장치를 이용한 폐수처리장 바이오가스 처리
정재억(Jae-Ouk Jung),정용준(Yong-Jun Jung) 한국습지학회 2021 한국습지학회지 Vol.23 No.1
폐수처리장에서 발생하는 바이오가스 중의 황화수소를 처리하기 위하여 습식스크러빙 장치가 적용되었다. 유입 H₂S 의 농도가 5,000mg/L이상에서 DIWS 장치에 물만을 사용할 경우 25%의 제거율을 나타내어 후속으로 소각처리 공정이 도입되어야만 98% 이상의 제거율을 나타냈다. 유입 H2S의 농도가 5,000mg/L일 때 CH₄과 CO₂는 각각 8.7%와28.6% 감소하여 배출되었다. DIWS 장치에 중화약품으로 Na₂CO₃와 NaOH를 사용하였을 때 pH가 11.2∼11.5를유지하면서 H₂S는 97.2% 제거되었다. DIWS system was introduced to remove hydrogen sulfide from the biogas of wastewater treatment plant. In the case of using water into the DIWS system more than 5,000mg/L of hydrogen sulfide, 25% of H₂S removal efficiency was shown and required such further treatment process as incineration which was obtained more than 98%. When the inflow of hydrogen sulfide was 5,000mg/L, CH₄ and CO₂ were effectively discharged and the reduction was 8.7% and 28.6%, respectively. When such neutralization chemicals as Na₂CO₃ and NaOH were introduced into the DIWS system, H₂S was removed more than 97.2% keeping pH in the range of 11.2 to 11.5.
습식세정장치에서 발생되는 마이크로버블을 이용한 음식물쓰레기 발생 복합악취 처리
김예진 ( Ye Jin Kim ),정재억 ( Jae Ouk Jung ),정용준 ( Yong Jun Jung ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.1
The objective of this work was to treat complex mal-odor of food waste with micro-bubbles from enhanced wet scrubber system, where the pilot plant was operated. Micro bubbles from the enhanced reactor of venturi scrubber were successfully generated through the air atomizing process with high velocity more than 60 m/sec and played an important role in the removal of mal-odor. Mal-odor was effectively changed into the micro-bubble and treated with washing chemicals together. Through establishing two series connection of the reactors, 85.2 % removal efficiency of complex mal-odor was obtained in case of average 940 times of input air. 0.35 kg/hr of sulfuric acid, 0.188 kg/hr of sodium hydroxide and 0.043 kg/hr of hypochlorite were injected for chemical washing.
마이크로버블과 자외선/과산화수소 산화공정을 이용한 광산배수의 중금속 처리 특성
정용준 ( Yong-jun Jung ),정재억 ( Jae-ouk Jung ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.3
Aeration with low energy micro-bubble generation and UV/H<sub>2</sub>O<sub>2</sub> processes was introduced to verify the possibility of oxidation treatment for acid mine drainage. During 10 hours of aeration with micro-bubbles, Fe and As concentrations were decreased to 18.1 and 61.8%, respectively, while Cu, Cd, Al were kept at influent concentrations. Other heavy metals such as Mn, Cr, Pb, Zn, and Ni concentrations fluctuated due to the repetition of oxidation and release. Twenty days of aeration indicated the oxidation possibility for Cu, Cd, and Al. With the employment of UV/H<sub>2</sub>O<sub>2</sub> processes, more than 77% of Cu and Fe removed, whereas slightly more than 30% of Cd and Al removed.