基于现场实测的炒菜类餐饮废气排放及静电净化效率评测  

Study on emissions from typical cooking catering restaurant and electrostatic purification efficiency evaluation based on field testing

作　　者：何万清 聂磊 曲松[1,2,3] 邵霞 朱利军[1,2,3] 石爱军 HE Wanqing;NIE Lei;QU Song;SHAO Xia;ZHU Lijun;SHI Aijun(Beijing Municipal Research Institute of Environmental Protection,Beijing 100037,China;National Urban Environmental Pollution Control Engineering Research Center,Beijing 100037,China;Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Pollution Control and Application,Beijing 100037,China)

机构地区：[1]北京市生态环境保护科学研究院,北京100037 [2]国家城市环境污染控制工程技术研究中心,北京100037 [3]北京市城市大气挥发性有机物污染防治技术与应用重点实验室,北京100037

出　　处：《环境保护科学》2022年第2期96-101,共6页Environmental Protection Science

基　　金：国家重点研发计划项目(2017YFC0211504)。

摘　　要：为了解静电净化技术对炒菜类餐饮废气的净化效果及随运行时间的变化,该研究选取一家典型餐饮企业对炒菜灶头进行废气净化改造,不定期现场跟踪检测净化设备使用前后颗粒物、非甲烷总烃(NMHC)和VOCs组分的浓度变化。结果表明,定期清洗维护状态下,静电净化设备对颗粒物净化效率变化范围为55.7%~97.3%,平均净化效率为85.9%,净化后平均排放浓度降至4.0 mg/m^(3),颗粒物净化效率稳定且达标;静电净化设备对NMHC的净化效率不稳定,总体净化效率低于25%,净化后NMHC的平均排放浓度为26.0 mg/m^(3),仍超过排放标准,其不是去除餐饮NMHC的有效手段,需要加装其他NMHC净化设备;在组分净化效率方面,各组分的净化效率变化和差异很大,这可能与餐饮企业排放过程风速湿度波动大,产生的污染物浓度组分不稳定以及静电净化器工作过程高压电源产生的臭氧等有关,需要进一步研究。In order to understand the effect of electrostatic purification technology on cooking fume and its vartiations with operating time,this study selected a typical restaurant for the exhaust gas purification transformation,and tested the concentrations of particulates,non-methane total hydrocarbons(NMHC)and VOCs components before and after purification.The results showed that the purification efficiency of the electrostatic purification equipment for particulates varied from 55.7%to 97.3%,and the average purification efficiency was 85.9%under regular cleaning and maintenance.The average emission concentration of particulates after electrostatic purification was 4.0 mg/m^(3).The concentration of particulates after purification could stably meet the standard emission limit value.The purification efficiency of electrostatic equipment for NMHC was unstable,and the overall purification efficiency was less than 25%.The average emission concentration of NMHC after electrostatic purification was 26.0 mg/m^(3),which still exceeded the emission standard requirement.Electrostatic purification technology was not effective for removing NMHC,the other NMHC purification equipment was needed.The purification efficiency for each component was different.That was because the ozone generated by the static electricity had different oxidation capabilities for different types of VOCs.It required more research in the future.

关 键 词：餐饮 颗粒物 非甲烷总烃(NMHC) 静电净化设备 净化效率 

分 类 号：X511[环境科学与工程—环境工程]