CAJ | 학술논문

对水蒸气剥离法去除污染土壤中多环芳烃(PAHs)进行了研究,研制了实验室规模的污染土壤中PAHs水蒸气剥离法试验装置,获得了多环芳烃脱附的基本试验数据,考察了泥浆质量流量、泥浆浓度和反应温度对脱附效率的影响,对上述影响因素进行了分析,确定了分离工艺的最佳参数范围,为大规模治理污染土壤提供了可靠依据.试验结果表明,泥浆流速增加会显著降低脱附效率,一般应取G≤2 kg/s为好.另外,提高反应温度则会使脱附效率有所增加,故反应器内温度保持在150～200℃范围内较好.
대수증기박리법거제오염토양중다배방경(PAHs)진행료연구,연제료실험실규모적오염토양중PAHs수증기박리법시험장치,획득료다배방경탈부적기본시험수거,고찰료니장질량류량、니장농도화반응온도대탈부효솔적영향,대상술영향인소진행료분석,학정료분리공예적최가삼수범위,위대규모치리오염토양제공료가고의거.시험결과표명,니장류속증가회현저강저탈부효솔,일반응취G≤2 kg/s위호.령외,제고반응온도칙회사탈부효솔유소증가,고반응기내온도보지재150～200℃범위내교호.
Experimental researches were conducted for cleaning up contaminated soils with Polycyclic Aromalic Hydrocarbons (PAHs) by steam stripping technique. The cleaning apparatus system in laboratory was manufactured. Examinations on the influences of sludge mass, flow rate, concentratior of sludge, temperature in high-pressure and low-pressure tube reactors on desorption efficiency were made. The experimental results indicate that the increasing mass flow rate decreases the desorption efficiency obviously and increasing reacting temperature raises the desorption efficiency. Normally, to obtain a high desorption efficiency, the mass flow rate of sludge should be less than 2 kg/s and the mean reacting temperature should be kept at 150～200℃.