【摘要】 核电站排放的低水平放射性洗衣废水中含有一些阴离子表面活性剂，会对生态环境构成潜在危害。通过选取典型的阴离子表面活性剂十二烷基苯磺酸铵作为研究对象，采用废液中的硝酸钠作为氧化剂，探究其在超临界水氧化技术不同工况参数下的去除率，分析了反应温度（250～500℃）、压力（16.5～24.5 MPa）、氧化剂过氧倍数（1.0～2.0）及停留时间（35～76 s）等对目标污染物降解效率的影响规律。结果表明：在反应温度为450℃、压力为22.5 MPa、氧化剂过氧倍数为1.5停留时间为41.8 s的条件下，有机物去除率可达85%，实现了以废治废的目标。更多还原

【Abstract】 The low-level radioactive laundry effluent discharged from nuclear power plants contains some anionic surfactants that may be potentially harmful to the ecological environment. By selecting ammonium dodecylbenzenesulfonate, a typical anionic surfactant, as the research object, using sodium nitrate in the wastewater as the oxidant, the removal rate under different working parameters of supercritical water oxidation technology was investigated, and the effects of reaction temperature(250～500 ℃), pressure(16.5～24.5 MPa), peroxide multiplicity of the oxidant(1.0–2.0), and residence time(35～76 s) on the degradation efficiency of target pollutants were studied. The results showed that under the conditions of 450 ℃, 22.5 MPa, 1.5 times peroxide multiplicity and 41.8 s residence time, 85% removal rate of organic matter could be achieved, which could achieve the goal of treating waste with waste.更多还原