填料对生物滴滤塔去除市政污水处理厂恶臭气体运行效果的影响  

Effect of Packing Materials on the Performance of Biotrickling Filters Treating Odor From a Municipal Waste Water Treatment Plant

作　　者：孙事昊 彭永臻[1,2] 贾体沛 陈凯琦 张亮 SUN Shihao;PENG Yongzhen;JIA Tipei;CHEN Kaiqi;ZHANG Liang(National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology,Beijing University of Technology,Beijing 100124,China;Engineering Research Center of Beijing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学城镇污水深度处理与资源化利用技术国家工程实验室,北京100124 [2]北京市污水脱氮除磷理论与过程控制技术研究中心,北京100124

出　　处：《北京工业大学学报》2019年第5期493-501,共9页Journal of Beijing University of Technology

基　　金：水体污染控制与治理科技重大专项资助项目(2017ZX07102-003);北京市教育委员会资助项目

摘　　要：以市政水厂粗格栅收集的气体为研究对象,研究了活性炭、火山岩、聚氨酯泡沫、聚丙烯环4种填料在生物滴滤塔中的去除恶臭气体性能,考察了工艺影响因素,并在长期运行中监测了不同填料的压降变化,对填料选择做了探讨.结果表明:1) 4种填料在空床停留时间为20 s时均能对H_2S气体实现100%去除率并保持稳定;聚氨酯泡沫和聚丙烯环填料对VOSC去除率分别达到62. 3%和65. 1%. 2) 4种填料反应器沿垂直高度去除贡献率均为0～0. 3 m最高,分别占据56. 6%、40. 0%、38. 4%及33. 7%. 3)液体滴滤速度为0. 011 m/h,pH=5. 4～7. 3是运行的最佳条件;聚丙烯环受液体滴滤速度影响最小,火山岩抗低p H冲击能力较高. 4)停止反冲洗后,活性炭、火山岩、聚氨酯泡沫填料由于空隙率、空隙直径小而容易造成堵塞,去除率在第220天时下降至60%～80%;而聚丙烯环由于空隙率高、空隙直径大保持了95%以上的去除率,在长期运行中体现出更稳定的去除性能.Four types of materials including activated carbon, lava, poly urethane foam and poly propylene ring were used as packings for biotrickling filters treating odor from a municipal waste water treatment plant. The performance, influence factors and pressure drops during the long-term operation were investigated. The experimental results show that at empty bed retention time of 20 s, 100% removal efficiencies for H2S are achieved with four types of packing materials;62.3% and 65.1% removal efficiencies for VOSC are achieved when packed with activated carbon and lava. The four contribution rates of reactors removal along the vertical height is mostly given by the part of 0 -0.30 m, accounting for 56.6%, 40.0%, 38.4%, and 33.7%, respectively. Trickling liquid velosity of 0.011 m/ h and pH of 5.4 -7.3 are the best operation conditions for degradation;poly propylene ring is least affected by liquid trickling velocity, and lava presents higher resistance to low pH. When the backwashing is stopped, the removal efficiencies of activated carbon, lava, and poly urethane foam decline to 60%- 80% in 220 days due to the low void fraction and small void diameter;otherwise, the removal efficiency of poly prylene ring maintains more than 95% because of the high void fration and large void diameter, showing stable removal performance during the long-term operation.

关 键 词：生物除臭 生物滴滤塔 填料 硫化氢 压降 恶臭气体 

分 类 号：X703[环境科学与工程—环境工程]