北京市混凝土搅拌站扬尘排放因子及排放清单

发布时间：2019-01-25 19:47

【摘要】：为准确估算混凝土搅拌站扬尘排放清单,本研究综合美国环保局和南加州的搅拌站扬尘排放因子,并在北京市典型搅拌站开展道路积尘负荷测试,建立了北京市搅拌站各生产环节及综合扬尘排放因子.结合北京市搅拌站扬尘治理过程,估算北京市1991~2014年搅拌站扬尘排放清单,并预测2015~2020年排放清单.结果表明:北京市2015年搅拌站道路积尘负荷平均值为(26.2±11.5)g/m~2,是南加州推荐值(11.0g/m2)的2.4倍;(2)1995年以前北京市搅拌站PM_(2.5)综合排放因子为86g/m~3混凝土,第1季度混凝土产量月不均匀系数是其他季度的1/3,2015年PM_(2.5)综合排放因子相比1995年以前下降89.4%,场区道路扬尘排放占比由10%增加至70%;(3)《北京市2013~2017年清洁空气行动计划》实施后,2015年搅拌站扬尘PM_(2.5)排放量下降至543.1t/a,相比2013年减排48.3%,其中清退无资质搅拌站对PM_(2.5)减排的贡献为18.6%;(4)搅拌站扬尘排放主要集中在五环至六环(52%),六环外排放量占总量的28%.未来北京市搅拌站扬尘减排工作应该着力于继续清退无资质搅拌和加强场区道路清扫保洁.
[Abstract]:In order to estimate the dust emission list of concrete mixing station accurately, this study synthesizes the dust emission factors of American Environmental Protection Agency and Southern California mixing station, and carries out road dust load test at typical mixing station in Beijing. The production links and comprehensive emission factors of dusts in Beijing mixing plant were established. Combined with the dust control process of Beijing mixing station, the emission inventory of Beijing mixing station from 1991 to 2014 was estimated, and the emission inventory from 2015 to 2020 was predicted. The results showed that the average road dust load of Beijing mixing station in 2015 was (26.2 卤11.5) g / m ~ (2), which was 2.4 times of the recommended value (11.0g/m2) of Southern California. (2) before 1995, the comprehensive emission factor of PM_ (2.5) in Beijing mixing plant was 86g/m~3 concrete. The monthly uneven coefficient of concrete production in the first quarter is 1 / 3 of that in other quarters. In 2015, the comprehensive emission factor of PM_ (2. 5) is 89.4 lower than that before 1995, and the proportion of road dust emission increases from 10% to 70%. (3) after the implementation of the Beijing Clean Air Action Plan from 2013 to 2017, the emissions of PM_ (2.5) from the mixing station dropped to 543.1 t / a in 2015, 48.3% less than in 2013. Among them, the contribution of clean and non-qualified mixing station to PM_ (2.5) emission reduction is 18.6B; (4) the dust emission from the mixing station is mainly from the fifth ring to the sixth ring (52%), and the discharge amount outside the six rings accounts for 28% of the total amount. In the future, the dust-reducing work of Beijing mixing station should focus on removing and removing unqualified agitation and strengthening road cleaning and cleaning in the field area.
【作者单位】：北京市环境保护科学研究院国家城市环境污染控制工程技术研究中心;北京市环境保护局;北京生产力促进中心;首都师范大学资源环境与旅游学院;
【基金】：国家质量基础的共性技术研究与应用重点专项(2017YFF0211804) 国家科技支撑计划课题(2014BAC23B02)
【分类号】：X799.1

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