摘要
进行了生物膜填料塔挂膜启动及烟气脱硫实验研究。循环液的Fe2+的氧化速率与吸光度有明显的相关性,同时,压力损失和pH也是挂膜启动完成的重要指标。通入低浓度SO2气体驯化后,脱硫率可达到90%以上,Fe2+氧化速率维持在0.2g/(L.h)左右,连续保持7d,挂膜启动完成。脱硫实验结果表明,在SO2入口质量浓度小于2 000m g/m3、喷淋液中Fe2+浓度大于或等于0.06m o l/L、喷淋率约为12L/(m3.h)、空塔气速约为0.15m/s的条件下,脱硫率可达96%以上。当喷淋液循环使用7次后,必须补充新鲜营养液,以保证较高的脱硫率。
The experiments on the start - up of the biotrickling filter and the desulfurization of flue gas were conducted. The oxidization rate of Fe^2＋ in circulating liquid is related obviously with the absorbance. In addition, the pressure loss and pH are also the main indexes for the accomplishment of the start - up. After the acclimatization with low concentration SO2, the removal rate of SO2 was more than 90% and the oxidization rate of Fe^2＋ was kept at 0.2 g/（L· h）during 7 d. It indicated that the start -up of biotrickling filter was finished, The experimental results show that the removal rate of SO2 can be more than 96% when the mass concentrations of influx SO2 is less than 2 000 mg/m^3, the concentration of Fe^2＋ in spray liquid is more than 0.06 mol/L, the spray rate is about 12 L/（ m^3· h）and the superficial velocity is about 0.15 m/s. The fresh culture medium must be supplied after circularly used for 7 times to keep up the removal rate of SO2.
出处
《化工环保》
CAS
CSCD
北大核心
2005年第6期436-440,共5页
Environmental Protection of Chemical Industry
基金
国家自然科学基金资助项目(50174014)
沈阳市环境工程重点实验室资助项目(2004013)
关键词
生物膜填料塔
启动
脱硫
废气处理
biotrickling filter
start - up
desulfurization
waste gas treatment
