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近五年同期最低:北京1至7月PM2.5浓度64微克/立方米
2017-08-21 21:20:27 中国青年网
新华社北京8月21日电(记者 倪元锦)北京市环保局21日下午发布称,今年7月,北京市PM2.5月均浓度为52微克/立方米,同比下降24.6%,为历史同期最低。截至7月底,北京市PM2.5累计浓度为64微克/立方米,为近五年同期最低,较2013年同期下降34.7%。
得益于《北京市2013-2017年清洁空气行动计划》,空气质量近五年来呈现持续改善态势。截至7月,4000蒸吨燃煤锅炉清洁能源改造、报废转出30万辆高排放老旧机动车、淘汰退出500家一般制造业企业等2017年“清空计划”的部分重点任务已提前完成。
机动车污染排放是北京市PM2.5浓度的最大占比来源。北京市环保局21日发布称,今年尤其加强对外埠进京车辆的检查执法,围绕主要进京道路以及五、六环路等区域周边,针对重型柴油车、高排放老旧车、货车闯禁行行为,开展集中专项整治行动,7月份共现场查处外埠车辆违反限制通行3.6万起。
据介绍,环保、商务、质监部门加大对北京市加油站柴油及车用尿素、油气回收在线监控改造等的抽查、夜查力度,并对外埠进京柴油车油箱中柴油质量进行抽测。7月,北京市共抽查重型柴油车9.7万辆次,环比增加10.3%;查处违规车2473辆次,处罚金额127万元。
下一步,北京市将针对重型车管控、“散乱污”整治、提升精细化水平、加快推进“清煤降氮”配套管线建设等重点难点问题逐一解决,推进空气质量进一步改善。
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