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과산화수소수를 이용한 난분해성 물질의 연속습식산화공정에 관한 연구
선용호(Yong Ho Seon),장윤영(Yoon Young Chang),황경엽(Kyung Yub Hwang) 한국물환경학회 2000 한국물환경학회지 Vol.16 No.5
We carried out a preliminary study for development of high-pressure oxidation process with respect to toxic, biologically refractive, high level organic wastewater using a continuous tubular reactor, which consists of a vertical sieve tray column. The oxidation process was tested for phenol, leachate from landfill, and dyeing wastewater using H₂O₂ as an oxidant. The results of the experiment with injection of 145mL of H₂O₂(35%) per 1L of phenol solution(l0g/L) at 130℃ and 4 atm showed the removal efficiencies for phenol and COD. 98% and 45% at the retention time of 10 min. 99% and 98% at the retention time of 20 min. 99% and 98% at the retention time of 30 min. The results for refractive wastes, leachate and dyeing wastewater, showed 90% and 70% of COD removals at 150℃, 4 atm and the retention time of 30 min, feeding H₂O₂ according to the mole ratio of the oxidation equation. But, after adjusting pH to 1.3, the removal efficiency for dyeing wastewater was increased to 80%.
고농도 유기 폐수 처리를 위한 펄스 유동식 혐기성 Biofilter 의 설계 및 시운전
김동진,선용호,황경엽 ( Dong Jin Kim,Yong Ho Seon,Kyung Yub Hwang ) 한국화학공학회 1994 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.32 No.4
A new bioreactor(biofilter) which uses immobilized microorganisms was developed for the biological treatment of high concentration organic wastewater. Polyurethane foams with carbon black were used for the support of microorganisms. The content in the biofilter is mixed by the turbulence generated by the falling wastewater which has potential energy. During the 100 days experiment wastewater residence time was varied from 15 day to 1.5 day and soluble COD removals were 86-95%. In terms of COD load polyurethane foams showed 11 ㎏COD/㎥·d, with 90% COD removal. This biofilter showed more than 10 times performance in COD removal than conventional anaerobic digestion.
장기 운전에 의한 펄스 유동식 혐기성 Biofilter 의 고농도 유기 폐수 처리 특성 연구
김동진,선용호,황경엽 ( Dong Jin Kim,Yong Ho Seon,Kyung Yub Hwang ) 한국화학공학회 1994 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.32 No.4
A new pulsewise fluidized bioreactor(biofilter) which uses immobilized microorganisms was developed for the effective biological treatment of high concentration organic wastewater. The content in the biofilter was mixed by the turbulence generated by the falling wastewater which has potential energy. Polyurethane foams were used for the support of microorganisms. In order to test the effect of mixing in the Biofilter pulse was off for 24 days during the experiment. When the pulse was off, the Biofilter performance was reduced dramatically. When the raw wastewater was introduced to the Biofilter without neutralization, COD removal efficiency and biogas generation rate were almost the same in the case of neutralization. During the 400 days experiment wastewater residence time was varied from 15 day to 1 day and soluble COD removals were 90-97%. In terms of COD load polyurethane foams showed 27 ㎏ COD/㎥·d with 90% soluble COD removal. This biofilter showed more than 15 times performance in COD removal than conventional anaerobic digestion. In spite of non-neutralizing the influent wastewater the reactor kept stable operation without disturbing the performance.