CAJ | 학술논문

苯系物是填埋场填埋气中恶臭有机气体的重要成分之一,填埋气中的 CH4则是重要的温室气体。填埋覆土层中的微生物可以氧化 CH4和苯系物,因此,强化微生物的氧化效能有助于削减和控制填埋气的污染。电子受体还原可耦合甲烷和某些有机物的厌氧氧化,从而去除甲烷和有机物。鉴此,本研究通过静态培养试验,分析了电子受体 SO2-4共存条件下,NO -3和CH4共存对覆土中苯系物厌氧降解的影响。结果表明不外加 NO -3时,苯系物抑制 CH4的降解,加入 NO -3后,苯系物共存反而有利于 CH4的去除；单独添加 NO -3或 CH4都能促进填埋覆土中苯系物的去除；而同时添加 NO -3和 CH4能更好地促进苯系物的去除,甲苯、二甲苯和异丙苯的去除率最高可达65％、88％和82％,远高于不添加 NO -3和 CH4对照处理的53％、76％和31％；NO -3还原与 CH4厌氧氧化耦合过程能同步促进苯系物的厌氧氧化。
분계물시전매장전매기중악취유궤기체적중요성분지일,전매기중적 CH4칙시중요적온실기체。전매복토층중적미생물가이양화 CH4화분계물,인차,강화미생물적양화효능유조우삭감화공제전매기적오염。전자수체환원가우합갑완화모사유궤물적염양양화,종이거제갑완화유궤물。감차,본연구통과정태배양시험,분석료전자수체 SO2-4공존조건하,NO -3화CH4공존대복토중분계물염양강해적영향。결과표명불외가 NO -3시,분계물억제 CH4적강해,가입 NO -3후,분계물공존반이유리우 CH4적거제；단독첨가 NO -3혹 CH4도능촉진전매복토중분계물적거제；이동시첨가 NO -3화 CH4능경호지촉진분계물적거제,갑분、이갑분화이병분적거제솔최고가체65％、88％화82％,원고우불첨가 NO -3화 CH4대조처리적53％、76％화31％；NO -3환원여 CH4염양양화우합과정능동보촉진분계물적염양양화。
BETX is one of the important components of stink organic gases in landfills, which simultaneously release much of greenhouse CH4 . The microorganisms in landfill cover soils are able to degrade CH4 and BETX. Therefore, improving the capacity of biological oxidation of microorganisms in landfill cover soils can effectively reduce and control pollution caused by landfill gases. Some electron acceptors can couple to anaerobic oxidation of methane and some organic pollutants, thus eliminating methane and organic substances. Based on the above theory, this research investigated the effect of nitrate (NO -3 ) and CH4 on anaerobic degradation of benzene series ( toluene, xylene and isopropyl benzene) with coexistence of SO2 -4 in landfill cover soils through static incubation experiment. The results showed that BTEX inhibited the degradation of CH4 without adding nitrate, however, BTEX instead improved the removal of CH4 after nitrate addition. Although single addition of nitrate or CH4 could improve the removal of BTEX in landfill cover soils, adding both of them could improve the removal of BTEX better as the removal efficiencies for benzene, toluene and isopropyl benzene were respectively reached 65% , 88% and 82% , much higher than those of 53% , 76% and 31% when not adding nitrate and CH4 . The process of anaerobic methane oxidation coupled to nitrate reduction was able to synchronously improve anaerobic oxidation of BETX.