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.
1. 서 론
2. 연구방법
3. 연구결과
4. 결 론