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“林中之城”深呼吸

2017-08-18 07:07:54   中国青年网

湖南日报记者 曹娴 通讯员 黄安怡

8月15日一早,记者乘坐高铁来到郴州,扑面而来的是清新的空气、浓浓的绿意。

郴州空气质量好,既看得到,也数得出:去年一年间,郴州有322天的空气质量为优良,优良率达到89.4%,排名全省第一。今年上半年,郴州空气质量优良率达89.5%,再次位居全省市州之首。

工业污染、面源污染也曾让郴州饱受“呼吸之痛”,令人好奇的是,这座城市如今良好的空气质量是如何炼成的?

攻重点: 淘汰燃煤锅炉,火电厂超低排放

“2个小时要扫一次灰,如果8个小时不清扫,地上的灰有一寸厚。”华润三九(郴州)制药有限公司锅炉班班长周运成向记者描述几年前烧燃煤锅炉时的情景。

8月15日,记者来到三九制药公司,看到的已是截然不同的景象,新锅炉房里干净整洁,没有刺鼻气味。

据介绍,2013年该公司投入700多万元对2台锅炉实施“煤改气”工程,2015年2月投入使用。2016年6月的检测报告显示,锅炉排放的烟尘浓度已由2014年的48毫克/立方米降为4毫克/立方米,二氧化硫、氮氧化物基本未检出。

目前,郴州市城区的燃煤锅炉已全面淘汰,累计淘汰205家企业308台(套)燃煤锅炉,市城区燃煤锅炉大气污染问题得以解决。

火力发电,曾是郴州大气污染“大户”。

湖南华润电力鲤鱼江有限公司坐落在资兴市东江河畔。8月15日17时49分,华润电力鲤鱼江公司门口竖立的大气污染物排放在线小时数据牌上滚动显示,1#机组二氧化硫、氮氧化物、烟尘浓度小时均值分别为7.3毫克/立方米、30.1毫克/立方米、2.7毫克/立方米,其浓度值均远低于国家超低排放标准35毫克/立方米、50毫克/立方米、10毫克/立方米。

火电厂的排放能达到天然气发电的水平,得益于近年实施的一系列环保节能改造。“十二五”期间,华润电力鲤鱼江公司投资2亿多元先后完成了SCR脱硝、脱硫系统一炉一塔改造等,排放大气污染物指标全部优于“史上最严”新国标。2016年以来,1#、2#机组陆续启动超低排放改造工程,并分别于2016年12月、2017年5月改造竣工,提前1年完成任务。

华润电力鲤鱼江公司不仅自己实现“绿色发电”,还帮助当地工业企业告别燃煤锅炉。华润电力鲤鱼江公司环境健康与安全监管部部长阳载文介绍,公司已为周边2家企业供热,这个月底还将完成20多家企业的管道建设,可陆续实现集中供热。

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