污水处理厂恶臭气体分布规律及挥发性气体定量评价  

Distribution Pattern of Malodorous Odor and Quantitative Evaluation of Volatile Gas in a Sewage Treatment Plant

作　　者：杜亚峰 李军[1] 赵珊[2] 李健伟[2] Du Yafeng;Li Jun;Zhao Shah;Li Jianwei(College of Architecture and Civil Engineering,Urban Sewage Depth Processing and Laboratory,Beijing University of Tevhnology,Beijing 100124,China;Research and Development Center,Beijing Drainage Group Co.,Ltd.,Beijing 100222,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]北京城市排水集团有限责任公司科技研发中心,北京100022

出　　处：《净水技术》2018年第7期69-74,共6页Water Purification Technology

摘　　要：采用自制静态采样装置和苏玛罐采集了北京某城市污水厂7个处理单元的空气样品。参照国标的三点比较式臭袋法测量样品的恶臭浓度,应用气相色谱-质谱联用仪分析恶臭挥发性有机物的组成和含量,纳氏试剂分光光度法和亚甲基蓝分光光度法分别测定样品中氨和硫化氢的含量,并针对恶臭挥发性有机物与恶臭感官浓度之间的关系进行定量评价。结果表明:污水处理厂逸散VOC浓度最高的单元为初沉池、曝气池和脱水机房;主成分分析将挥发性有机物分为苯系物、卤代烃、含氮的挥发性有机物以及硫化物4类;通过多元线性回归方程拟合的结果得到,在挥发性有机物中苯系物、卤代烃和硫化物对污水处理厂的恶臭浓度影响最大,恶臭浓度实测值与理论值拟合良好。By using static device and summa canister,7 processing unit air samples are collected in a sewage treatment plant in Beijing. The olfactory concentrations and chemical composition of these samples are respectively analyzed by triangle odor bag method and GC-MS. The content of ammonia and hydrogen sulfide in the samples are determined by sodium reagent spectrophotometry and methylene blue spectrophotometry respectively. Finally, a mathematical equation is built for assessing the relationship between principal organic odorants and odor olfactory concentrations. The results show that emissioning VOC of sewage treatment plant appears in the primary sedimentation, aeration and thickening tank with the highest concentrations. Principle component analysis is used to group the target VOC into 4 categories ： benzenes, halohydrocarbons, N-containing organic compounds and sulfides. The benzenes, halohydrocarbons and sulfides have the greatest impact on odor concentration in sewage treatment plants, which are obtained by fitting multiple linear regression equations, theoretical odor concentration values are fitting well with measured values.

关 键 词：污水处理厂 臭气收集 臭气分布 挥发性有机物 主成分分析 

分 类 号：TU992[建筑科学—市政工程]