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变废为宝:垃圾发电厂年产2亿度电 水空调节能超30%

2017-07-12 09:23:14   工人日报

每天“吞”下200吨生活垃圾,却能“吐”出10吨水泥粉料。7月8日,记者在重庆投资近亿元建成的首条利用水泥窑处理城乡生活垃圾的生产线看到:一车车从城乡运来的生活垃圾,在重庆海螺水泥有限公司900℃的气化炉内被无公害化处理。

资料显示,由于生活习惯等问题,我国的垃圾有着水分高、热值低、不分类等特点,被国外称为“穷垃圾”。近10年来,我国垃圾以每年8%的速度递增。如何对生活垃圾进行无害化、资源化处理,已经成为世界性难题。

垃圾发电厂年产2亿度电

以前听到垃圾厂就马上想到“脏、乱、臭”,但记者在重庆丰盛垃圾焚烧发电厂,看到的却是另外一番景象:这个垃圾处理厂不仅能发电,花团锦簇的环境甚至跟公园差不多。

据了解,该电厂由重庆三峰环境产业集团投资建设,总投资10.5亿元。每天可以处理生活垃圾2400吨,差不多能处理重庆主城区三分之一的生活垃圾。每年上网电量约2.3亿千瓦时,可满足约20万户居民的用电需求。

该电厂相关负责人介绍,这个可容纳2万吨生活垃圾的储存大厅是全封闭式的,垃圾渗漏液流入下面的收集池后,分三级进行处理,达到一级排放标准。挥发性气体也有专门的收集管道引入烟气处理区域。“也就是说,整个处理过程不会对环境造成显著影响。”这名负责人说。

据了解, 焚烧炉是垃圾焚烧发电厂最核心的技术,过去国内市场一直被德国、美国等发达国家垄断。目前,三峰环境垃圾焚烧发电技术成功实现本土化、产业化,在国内市场占有率居于首位,达到国际领先水平。

重庆科技学院科研处处长、重庆垃圾焚烧发电技术研究院常务副院长周雄介绍说,垃圾焚烧可以减少碳排放,减少耕地的占用,避免地下水污染及填埋场沼气爆炸。“从社会经济效益上来说,重庆垃圾填埋70元一吨,垃圾焚烧为69.9元一吨,但一吨垃圾焚烧后可以发300多度电,不仅降低环境污染,还产生了巨大的经济效益。”

“水空调”节能超过30%

7月的山城,烈日炙烤大地。但在巨型的重庆大剧院里,居然看不到一台空调外挂机,也听不到机器运行的噪音,而观众却能在凉风劲吹的剧场里惬意地欣赏着节目。“这一切,都受益于目前国内最大的‘水空调’项目。”经营重庆大剧院的保利剧院管理有限公司人士向记者介绍。

重庆大剧院位于江北城CBD中心,为营造一个节约能源、减少排放、环境友好的城市区域,充分利用区域内的自然资源,重庆市实施江北嘴CBD区域江水源热泵集中供冷供热项目,为江北城CBD区域内的公共建筑空调系统提供冷热源。这就是市民俗称的“水空调”。

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