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北京深度治理挥发性有机物 促进臭氧和PM2.5协同减排

2017-08-24 18:01:34   中国青年网

新华社北京8月24日电(记者 倪元锦)挥发性有机物(VOCs)是大气中臭氧和PM2.5的重要前体物。为控制VOCs排放,促进臭氧和PM2.5协同减排,北京“清洁空气行动计划”采用工程减排、结构减排、管理减排相结合的方式,在全国率先实施工业源VOCs总量控制。

今年以来,北京市在重点行业不断推进VOCs治理,记者24日从北京市环保局获悉,今年8月底,即将完成全市汽车制造行业的环保技改项目,推动工程减排,淘汰污染工艺。

根据《北京市2013—2017年清洁空气行动计划重点任务分解2017年工作措施》,今年8月底前,北京市须完成汽车制造业底漆、中涂、色漆环节全面推广水性漆替代油性漆,以及在罩光漆环节实施有机废气的深度治理。

据了解,北京市共有9家汽车整车制造企业,均开展了治理工程,8月底前可完成任务。

在北京福田戴姆勒汽车有限公司二工厂,记者看到,这家工厂今年对涂装车间的废气排放管线进行改造,并新增加VOCs治理装置,采用“转轮吸附浓缩+蓄热氧化燃烧”处理工艺,对有机废气进行深度治理。

“目前改造项目已完成,进入调试阶段,预计深度治理后的VOCs减排量可以达到80%以上。”项目负责人介绍。

近年来,北京市通过制定有关政策,调整产业结构,促进不符合首都功能定位的企业调整退出。2014年,颁布《北京市工业污染行业生产工艺调整退出及设备淘汰目录》,明确了不符合首都功能定位的污染行业、生产工艺,倒逼企业淘汰或转型升级。今年7月,又发布实施更加严格的《北京市工业污染行业、生产工艺调整退出及设备淘汰目录》(2017年版)。

此外,北京市于2015年制定《北京市新增产业的禁止和限制目录》,将VOCs排放量大的化工、印染、机械设备制造、人造板及家具、印刷等行业列入禁限范围,从源头控制了VOCs的增量。今年1-7月,北京市共调整退出一般制造业539家。

为减少VOCs排放,北京市针对炼油石化、印刷、汽车制造等重点行业先后发布了7项控制VOCs排放的地方标准。今年,根据京津冀协同发展要求,三地共同制定发布了《建筑类涂料与胶粘剂挥发性有机化合物含量限值标准》,这是京津冀三地在环保领域发布的首个统一地方标准。

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