Decomposition of sulfur compounds by a radiolysis: III. A hybrid system and field application

作者：Son Youn Suk^*; Jung In Ha; Lee Sung Joo; Kim Jo Chun

来源：Chemical Engineering Journal, 2015, 274: 9-16.

DOI：10.1016/j.cej.2015.03.122

• Electron beam
• Cross flow scrubber
• Sulfur compound
• Hydrogen sulfide
• Methyl mercaptan
• Hybrid system

In this study, a hybrid system combining two different techniques (electron beam and cross flow scrubber) has been developed and applied to control odorous sulfur compounds (hydrogen sulfide, methyl mercaptan, dimethyl sulfide and dimethyl disulfide) in a wastewater treatment facility. Removal efficiencies of sulfur compounds using an electron beam were high in the order of hydrogen sulfide > methyl mercaptan > dimethyl sulfide > dimethyl disulfide when the range of absorbed dose was 5-10 kGy. We also found that the liquid/gas ratio at 4.7 L/m(3) was sufficient to remove residual odorous sulfur compounds and its by-products. Based on these results, a pilot study was carried out. As a result, the removal efficiencies of all target compounds were approximately 100% at 2.5 kGy in the pilot-scale hybrid system. It was also found that the levels of NO2 and CO formed by electron beam irradiation were lowered down to the ambient level by the hybrid system.

• 出版日期2015-8-15