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steam stripping technique
相关语句
  水蒸气剥离法
     NUMERICAL STUDY ON AXIAL DISPERSION MODEL FOR STEAM STRIPPING TECHNIQUE
     水蒸气剥离法纵向脱附模型的数值研究
短句来源
  相似匹配句对
     STEAM-STRIPPING OF REFINERY SOUR WATER
     炼厂酸性水汽提技术的研究
短句来源
     The traditional steam stripping method has many disadvantages.
     传统汽提法存在的问题较多。
短句来源
     Steam rectification
     水蒸气精馏
短句来源
     NUMERICAL STUDY ON AXIAL DISPERSION MODEL FOR STEAM STRIPPING TECHNIQUE
     水蒸气剥离法纵向脱附模型的数值研究
短句来源
     Mechanism of steam flooding
     蒸汽驱油机理
短句来源
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In recent years, soil contamination by Polycyclic Aromatic Hydrocarbons (PAHs) has become a grave issue of the environment. Due to leakage of industrial wastes and sedimentation of particulates in the air, the surface soils could contain high-grade organic contaminants such as PAHs. In this paper, the primary sources of PAHs emissions and toxicity accumulation of the substances were recounted. The advances in the techniques for PAHs removal from contaminated soils were reviewed. Some techniques for the removal...

In recent years, soil contamination by Polycyclic Aromatic Hydrocarbons (PAHs) has become a grave issue of the environment. Due to leakage of industrial wastes and sedimentation of particulates in the air, the surface soils could contain high-grade organic contaminants such as PAHs. In this paper, the primary sources of PAHs emissions and toxicity accumulation of the substances were recounted. The advances in the techniques for PAHs removal from contaminated soils were reviewed. Some techniques for the removal of volatile and semi-volatile pollutants in soils were depicted, especially the steam stripping technique, which has proved itself to be appropriate for cleaning contaminated solids. The experimental setup and process flow of the steam stripping technique were described, and the effects of temperature and pressure on desorption of PAHs were investigated. In addition, research works to be carried out in future on the techniques for PAHs removal were shown clearly.

陈述了污染土壤中多环芳烃(PAHs)处理技术的研究进展,介绍了挥发性和半挥发性污染土壤的几种处理方法,并重点对水蒸汽剥离法实验装置及流程作了介绍。分析了温度、压力等因素对PAHs脱附的影响,指出了今后处理污染土壤中PAHs的研究方向。

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, concentration 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...

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, concentration 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℃.

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≤2kg/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。

 
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