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大兴前七月PM2.5浓度降幅超过前四年

2017-08-18 15:47:04   中国青年网

本报讯(记者张航)大兴区积极调整能源结构,确保“清煤降氮”取得实效。记者了解到,该区PM2.5浓度四年下降19微克/立方米,而今年前七个月PM2.5浓度更是比去年下降了21微克/立方米,是前四年降幅总和的110.5%。

庞各庄镇西高各庄村村民韩士富家,已经装上了空气源热泵,只要在操作面板上设定好温度后,就可以全自动运行。温度低于设定温度时,启动加热,达到设定温度后自动停机,保持室内温度在18℃至22℃。值得一提的是,这套供暖设备即使在零下20℃也能正常工作。在韩士富家的一间厢房,“退役”的燃煤炉已经被挪到了角落里。“今年冬天终于可以不闻煤烟了!”韩士富高兴地说。记者了解到,韩士富家使用空气源热泵取暖后,算上市、区财政两级电价补贴,一个采暖季电费约在3000元左右,与过去烧煤相差无几,但能源更清洁,使用更便利。

在天堂河农场小区的锅炉房,4台6蒸吨的燃煤锅炉已经完成历史使命,6台天然气锅炉今冬将接过任务,为周边13.7万平方米的住户供暖。今年冬天,厂房外的烟囱将不再有烧煤的黑烟冒出。

位于南五环附近的首兴永安供热公司,承担着为周边开发区企业单位120万平方米供暖以及提供生产用蒸汽的任务,过去是大兴的用煤大户。不过前些年,这家供热公司已经改用了清洁的天然气。今年,首兴永安供热公司的锅炉将再度升级,进行低氮改造,进一步减少氮氧化物的排放量。记者注意到,厂区内至今还保留着高大的燃煤锅炉房和煤块传送带车间,但它们的功能不再是生产,而是转型为文化创意园,入驻了“猪八戒网”等很多著名企业。

记者了解到,在全面推进农村地区和社区煤改电、煤改气工作方面,大兴目前已完成72个村“煤改电”外线工程,计划9月底全部完工;在全面推进燃煤锅炉改造方面,年初至今,已完成清洁能源改造272.58蒸吨;在全面推进燃气锅炉低氮改造方面,全区已有396台2156蒸吨燃气锅炉签订改造合同。

2013年,大兴区细颗粒物浓度108微克/立方米,2016年为89微克/立方米,四年细颗粒物浓度下降19微克/立方米。截至今年7月底,大兴区细颗粒物浓度为68微克/立方米,比2016年下降了21微克/立方米,达前四年下降幅度总和的110.5%。J067

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