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实施联网集中供热——消减污染源 增艳“丹东蓝” 

2017-08-30 14:16:16   央广网

央广网丹东8月30日消息(记者徐志强)日前,在地处丹东市华夏村社区的青年广场供热站,几位工人正在把已经拆除的锅炉部件,统统搬到室外空地上准备运走,锅炉房内只剩下满地的碎石瓦块等待清理。“联网集中供热后,这里就叫换热站了,周边居民的生活环境应该能干净不少。”一位工人说。

丹东青年广场供热站的小锅炉,从8月17日就开始拆了。工人称,下一步,供热站门口的那根大烟囱也要拆掉。“原来叫供热站,将来叫换热站,别看只差一个字,供热方式却有本质区别。”金山热电有关技术人员说,待青年广场换热站投入使用后,只承接热源中转输送任务,不再需要烧锅炉,烟囱自然也就没用了。

“那可是件大好事呀,谁家愿意守着这个大烟囱,挡光不说,一到冬季还总冒黑烟。”家住六纬路138号楼的林女士告诉记者,她家距青年广场供热站不足100米,家里的一面窗户正对着大烟囱。这些年一到供热期,晚上锅炉房发出的噪音,经常吵得人睡不好觉。白天出门,大烟囱附近区域,黑烟和里面夹杂的灰尘,甚至会让人睁不开眼睛。

其实不只是青年广场供热站,城区此前沿用的多数锅炉房,特别是使用10吨及以下燃煤锅炉的锅炉房,基本上都会在燃煤过程中,大量排放二氧化硫、氮氧化物和烟尘等污染物,对空气质量及周边居民的生活环境造成了诸多影响。

正是由于这一点,最近几年,丹东市全力推进联网集中供热,并在此过程中,按照“拆小并大”的原则,逐步消减城区在用的10吨及以下燃煤供热锅炉。“联网集中供热后,换热站使用板式换热器调节水温,不涉及燃烧,无污染,零排放。”金山热电工程建设指挥部办公室副主任左占元说,除此之外,换热站工作机组发出的声音,也要比锅炉房排风系统产生的噪音小很多。

今年城区要拆除和关停的锅炉房,也不仅仅是青年广场供热站。按照市集中供热联网工程建设领导小组办公室给出的数字,2017年度,市区计划拆除关停的锅炉房达41座,涉及锅炉57台。这项工程完工后,城区10吨及以下燃煤供热锅炉(不包含企事业单位自用小锅炉及生产、蒸汽等用途的锅炉)将彻底消失。

实行联网集中供热,关停小锅炉房,拆除小锅炉,相当于堵住了不少大气污染源。丹东城区集中供热联网工作始于2012年,到2016年末,退出市场的供热单位已达107家,关停和拆除锅炉房达158座,涉及锅炉266台。这对改善丹东空气质量起到了一定促进作用。

据统计,丹东市二氧化硫、二氧化氮、PM10和PM2.5的年均浓度,2016年较2014年分别下降了23.1%、16.6%、13.4%和12.5%。2014—2016年,丹东市优良天数一直保持相对稳定,这三年的优良天数分别为309天、310天、309天。

今年的集中供热联网和“拆小并大”工程全面实施后,将进一步稳定大气环境质量改善效果,预计年内环境空气优良天数率将达到84.7%。

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