共查询到20条相似文献,搜索用时 78 毫秒
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为了开展生物化学法净化处理低浓度有机废气的理论及应用研究,针对生物膜填料塔建立了甲苯生化降解反应的动力学模型,对比验证的结果表明,模拟计算值与实验值之间有很好的相关性(相关系数R>0.96),故可利用这一模式由已知的操作参数对生物膜填料塔的净化效果进行预测。 相似文献
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从采集活性污泥中筛选得到1株具有高效降解甲醛能力的菌株并命名为JQ-1,根据其形态特征,初步判断菌株JQ-1属假单胞菌属。采用菌株JQ-1对生物膜填料塔内填料进行生物挂膜,组成甲醛废气生物处理系统,在系统稳定后进行了生物膜填料塔净化处理低浓度甲醛废气的初步实验研究。实验结果表明:入口甲醛浓度<33 mg/m3时,甲醛净化效率维持在93%以上,当超过此值时,净化效率有较大幅度下降;随着进气流量的增加,甲醛净化效率是下降的,当进气流量从0.06 m3 /h增加到0.18 m3 /h时,甲醛净化效率则从92.5%下降至73.4%;喷淋流量对甲醛净化效率也有影响,当喷淋流量为1.8 L /h时,甲醛净化效率最好,可达92.7%。结合实验数据,对相关的基础理论进行了初步探讨。 相似文献
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化工生产过程中经常排出大量的废气,大量含氯化合物在化学反应过程中都有副产氯化氢气体产生。例如:医药工业维生素 B_6生产过程中的氯化反应,就有副产氯化氢气体;染料工业色酚 AS 制造过程中的缩合反应也有氯化氢气体放出;农药工业的敌百虫生产过程中的酯化工序,三氯硫磷与无水乙 相似文献
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The Purification experiments of waste gas containing low concentration toluene were made in trickling biofilter with ceramic spheres. The effects of liquid flow rate,gas flow rate,pH of circulation liquid, and toluene concentration in inlet gas on the purification efficiency of trickling biofilter were investigated. The pressure drop of the trickling biofilter was also measured during experiments.Increasing liquid flow rate and gas flow rate resulted in the decrease of purification efficiency of trickling biofilter. The highest purification efficiency of trickling biofilter was found at the circulation liquid pH of 7. The porosity of the packing material at the inlet of gas was higher than that at the outlet of gas in biofilter after continuous operation in 50 days. The decrease in the porosity of packing material caused a great increase in the pressure drop of the biofilter. 相似文献
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氯酸钠-硫磺法制二氧化氯的研究 总被引:3,自引:0,他引:3
对硫磺还原氯酸钠制备二氧化氯的工艺条件进行了研究 ,反应的最佳条件是 :温度为 60~70℃ ,氯酸钠浓度为 4~ 5 mol/L,反应液中维持硫酸浓度为 1 mol/L以上。该法具有反应温和易于控制、硫酸消耗少、成本低廉和产品纯度高的优点 相似文献
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二氧化硫是环境大气的重要污染源之一,做好环境空气中二氧化硫的监测和提高监测准确性,对环境监测和环境保护工作具有重要意义。 相似文献
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烟气中二氧化硫测定方法的研究 总被引:1,自引:0,他引:1
对烟气中二氧化硫的测定方法进行了改进,采用TH-880IV微电脑烟尘平行采样仪代替碘量法,对脱硫塔进出口烟气中二氧化硫进行测定,测定值相对误差为1.2%。 相似文献
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采用不同浓度的硝酸溶液在不同的浸渍时间和真空处理温度下,浸渍聚丙烯腈基活性碳纤维(PAN-ACF)。以正交实验和单因素法分析影响改性聚丙烯腈基活性碳纤维吸附二氧化硫的因素。实验结果表明:浸渍的初始浓度是影响改性的最主要因素,浓度达到0.12mol/L时,吸附量接近最大值,而浸渍时间和真空处理温度影响相对较小,并且改性聚丙烯腈基活性碳纤维耐疲劳性较好。 相似文献
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The citrate absorption of SO2 is currently one of the most successful and economic methods to harness sulfur dioxide pollution. In order to theoretically elucidate the mechanism of SO2 absorption by citrate solution and provide theoretical instruction for experiments and industrial process, the theory of multi-buffer solution, combined with computer numerical calculation methods, was applied to study the distribution parameters of the components of the citrate solution in the process of SO2 absorption and the following results were obtained: (1) HCi2- and H2Ci- in the citrate solution played the dominant role in the absorption and desorption processes; (2) Through the calculation for the buffer capacity of citrate solution, it was found that the pH of the absorption and desorption solution should be in the range of 2~8, while at pH=4.5 the buffer capacity reached its maximum. Some valuable parameters were obtained, which are instructive to the ensuing experiments and industrial design. 相似文献
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大气中的二氧化硫绝大部分与燃烧有关,而且主要是由煤炭的燃烧所产生,二氧化硫转化为酸雨严重地破坏了人类的生态环境。针对这一现状,文章综述了烟气脱硫中几种重要的二氧化硫净化技术。 相似文献