과산화수소수를 이용한 난분해성 물질의 연속습식산화공정에 관한 연구 = A Continuous Wet Oxidation Process for Treating Refractive Wastes with Hydrogen Peroxide

다국어 초록 (Multilingual Abstract)

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%.