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晒晒蓝天背后的秘密之一:为何北京颜值爆表?

2017-10-12 10:28:42   北京时间

针对居民“煤改电”后的使用成本,曾景海和他的同事们专门制定了补贴政策。

“我们通过和电力公司协商,外电网的建设由电力公司投资,市政府进行一定比例的补助。内电网的建设则由市区两级政府全额补助。所以建设这块等于居民没掏钱。”曾景海说,“在使用上,因为储热式电采暖器用的是谷电,所以只要3毛钱一度,而且市里和区里各补贴1毛钱,用下来和烧煤差不多,所以后来都主动要求改。”

曾景海回忆说,到2015年,东西城就基本实现无煤化,因此而受益的居民超过30万户。

另据了解,除了锅炉和散煤,燃煤电厂和工业原料用煤也是北京燃煤的主要来源。不过,就在今年3月,伴随着位于北京东南部的华能热电厂燃煤发电机组的关闭,占北京燃煤消耗近4成的四大燃煤电厂已全部改造关停燃煤机组,以此削减燃煤量高达900万吨左右。

“这些煤如果用载重10吨的卡车来装,需要90万辆,这些车如果两辆一组首位相连,差不多可以从北京排到新疆乌鲁木齐。”曾景海举例说。

“总体来说,清煤的效果非常明显,这一点从二氧化硫的数值就可以看出来。”曾景海告诉记者,1998年时,北京市二氧化硫年均值在120,到2016年时,这一数值已经降到10,而今年更有望降至个位数。

行动者:绿色出行也是在降低PM2.5排放

“清煤”大幅削减了北京市空气中的二氧化硫,而“清空计划”中同步实施的“降氮工程”、“减油控车”、“工业源治理”等措施也都取得了相应的成效,共同为提高北京蓝天的含金量打下了坚实基础。

邹毅开始拍摄并关注北京空气的时候,也正好是“清空计划”正式开始实施的时候。

“今年是‘清空计划’的最后一年,到今年年底要达到PM2.5年均浓度控制在60微克/立方米的目标,像今天浓度是5微克/立方米,只相当于平均数的十二分之一。”对于今年北京能否完成清空计划的目标,邹毅非常乐观。

        

北京空气4年变化通过图片可以“一目了然”(受访者供图)

“现在大家也不像以前那样对天气关注了——因为天气好的时候多,也就不敏感了。”邹毅还跟北京时间记者举例,现在大家在朋友圈晒各种晚霞和云朵很多,这也是空气在变好的一个反映。

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