电晕氧化结合化学吸收脱除烟气中NO2实验研究

实验研究了直流电晕湿空气自由基簇射结合25%的NaOH溶液吸收的NOx脱除过程．结果表明：通过调节流过喷嘴电极中的空气流量,可以得到稳定的流光电晕;空气中水蒸汽对NOx脱除效率有影响;在反应器内同时有HNO2和HNO3生成;实验工况下,反应器NOx转化率45％以上,经吸收液吸收后系统总脱氮效率可达70％．     

聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd2+吸附性能研究

制备了一种聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂,重点考察了吸附剂对Cd2+吸附的pH依赖性、吸附动力学和吸附等温线.结果表明,Cd2+溶液pH值对吸附容量有较大影响.在pH=8、吸附时间30 min、Cd2+溶液初始浓度0.02 mol/L和吸附剂用量0.10 g的条件下,吸附剂对Cd2+的饱和吸附量可达294.7 mg/g.与膨润土相比,三维网络凝胶吸附剂具有更高的吸附容量和更快的吸附速率.     

摆管淋水试验装置的校准方法探讨

文中简述了摆管淋水试验装置的基本结构及其常见的校准方式,对其中的“摆角校准”这一技术难点提出了可行的解决方案并作了较详尽的说明分析。     

人工湿地系统处理校园污水的工艺设计

介绍了广东某大学校园学生公寓淋浴洗衣污水的人工湿地处理工艺。本工程具有工程投资少,处理费用低,运行平稳,处理效果好,美化景观等的特点。处理后的中水可回收作为湖水的补充用水。本工程投入使用后,可获得较大的经济效益和社会效益。     

Eco-Labelling of Shampoos,Shower Gels and Foam Baths (6 pp)

GOAL, SCOPE AND BACKGROUND: Environmental issues of personal care products have been met with little attention in the past. Monitoring data as well as preliminary environmental risk assessments indicate that some ingredients in personal care products might be relevant pollutants in the environment. Following the precautionary principle, eco-labelling is proposed as an effective tool for source control of one major group of personal care products, shampoos, shower gels and foam baths (SSBs). Eco-labelling is a soft, but effective market driven and product specific approach to lower discharge of environmentally detrimental substances. Products that fulfil the criteria proposed help to minimise the impact of SSBs on the environment. METHODS: Available assessment tools for dangerous substances (e.g. current legislation on environmental risk assessments and classification, and labelling, eco-labelling criteria for similar products, the calculation of the critical dilution volume) were adapted and integrated into the criteria for the eco-labelling of SSBs. RESULTS AND DISCUSSION: A short outline of the eco-labelling criteria developed for SSBs is provided. The basic criteria concern the effects of the substances discharged into the waste water during and after use. Products with an eco-label award may exclusively contain substances for which basic information about their effects on the environment is available. They may not contain persistent, bioaccumulating, toxic or ecotoxicological substances. In addition, the basic criteria include requirements for the container and consumer information. CONCLUSION: The basic criteria for eco-labelling SSBs are based on the actual state of science and are at the same time as simple and transparent as possible to ensure the best applicability. SSBs that comply with the described basic criteria can contribute to a lower chemical burden of waste water treatment plants and surface water. RECOMMENDATION AND OUTLOOK: The proposal for basic criteria described should stimulate discussion on eco-labelling of SSBs. It should help to pass valid criteria supported by authorities, producers and consumer groups for a national or international eco-label, e.g. for the European Flower or the German Blue Angel. In future, the successful introduction of labelled SSBs into the market will raise the awareness of the general public about the environmental effects of personal care products and it will help to promote environmentally compatible products.     

应急救援中紧急冲淋设备的研讨

随着国家经济的飞速发展,减少作业人员在事故发生时所受到的职业危害尤为重要。本文对紧急冲淋设备的技术性能、作用进行了一定探讨与描述,希望对企业正确的配备紧急冲淋设备有所帮助。     

Rheological and sensory properties of hydrophilic skin protection gels based on polyacrylates

Introduction. With the current increases in occupational skin diseases, literature data attesting the decreasing efficiency of barrier creams with respect to the manufacturer’s declarations and legal regulations granting skin protection gels for employees, research is required to analyse and evaluate the recipes used for hydrophilic skin protection gels based on polyacrylates. Methods. This study investigated the rheological properties, pH and sensory perception of hydrophilic barrier gels based on polyacrylates. Results. The acrylic acid derivatives used were good thickeners, and helped to form transparent gels of adequate durability. They could be used to create hydrophilic films on the surface of the skin to protect it against hydrophobic substances. A correlation was shown between the results of the rheological properties and the barrier properties of the gels. This confirms the possibility of monitoring the quality of the gels at the stage of recipe development. Conclusions. Polyacrylates are viable for use in industry to produce hydrophilic barrier creams suitable for skin protection.     

Fereducer反应强化直流电晕自由基簇射治理苯

为强化直流电晕自由基簇射对含苯废气的去除,采用Fereducer反应进行实验研究.将含Fereducer试剂的电极气引入反应器中,在苯浓度分别为953mg/m³和63mg/m³时,其去除率提高了21%和4.2%.电极气(O₂、H₂O)的存在对苯的脱除起了不同程度的促进作用,最高可达89.6%.苯的初始浓度较低时脱除效率较高,但高浓度下的绝对去除量较大.     

电极喷嘴布置对NO电晕氧化过程影响的试验研究

使用湿空气作为自由基源物质 ,研究了电极喷嘴布置对电晕放电特性、NO电晕氧化过程的影响 .结果表明 ,随着电极喷嘴数的增加 ,总电晕区域变大 ,流光的脉动重复率增加 ,NO的氧化率提高 .试验条件下 ,对应B(14 )、B(8)、A(7)、A(4 )的放电电极 ,电晕反应器NO的氧化率最高可分别达到 65 3 %、5 0 5 %、5 1 3 %、2 7 5 % .采用喷嘴数较多的电极时 ,NO电晕氧化的能量效率较高 ,有效工作区内 ,对应B(14 )、B(8)、A(7)、A(4 )的放电电极 ,电晕反应器NO氧化的能量效率最高分别为 5 3 1g·kWh- 1 、5 0 2g·kWh- 1 、5 0 7g·kWh- 1 、3 8 0g·kWh- 1 ,它们对应的NO氧化率分别为 5 3 8%、42 5 %、48 8%、2 3 0 % .喷嘴数目相同时 ,A型电极所形成的电晕流光在电晕反应器内具有更好的充满度 ,更有利于烟气NOx 脱除 .     

聚（丙烯酸-co-丙烯酰胺）/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd^2＋吸附性能研究

制备了一种聚（丙烯酸-co-丙烯酰胺）/膨润土/腐植酸钠三维网络凝胶吸附剂,重点考察了吸附剂对Cd2＋吸附的pH依赖性、吸附动力学和吸附等温线。结果表明,Cd^2＋溶液pH值对吸附容量有较大影响。在pH=8、吸附时间30 min、Cd^2＋溶液初始浓度0.02 mol/L和吸附剂用量0.10 g的条件下,吸附剂对Cd2＋的饱和吸附量可达294.7 mg/g。与膨润土相比,三维网络凝胶吸附剂具有更高的吸附容量和更快的吸附速率。