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秸秆综合利用新技术频出 助力农业绿色发展五大行动

2018-01-26 09:12:29 来源:中国农机网 阅读量:30981 评论

导读:东北地区是我国产玉米的大区,每年有大量的玉米秸秆产生,这些看似没有大用处的秸秆经常被农民一把火付之一炬,,既节约时间又省力,但是对环境的危害却是极大的,我国已命令禁止焚烧秸秆。

  【中国农机网 科技创新】东北地区是我国产玉米的大区,每年有大量的玉米秸秆产生,这些看似没有大用处的秸秆经常被农民一把火付之一炬,,既节约时间又省力,但是对环境的危害却是极大的,我国已命令禁止焚烧秸秆。
 
  既然不让烧,那么秸秆该如何处理呢?
 
  2017年4月26日,农业部发布关于实施农业绿色发展五大行动的通知,东北地区秸秆处理赫然在列。按照行动部署,确保到2020年,东北地区秸秆综合利用率达到80%以上,新增秸秆利用能力2700多万吨,露天焚烧显著减少。自秸秆处理行动实施以后,各地区为了秸秆综合利用做了很多努力,各种秸秆综合利用新技术频出。
 
  秸秆原料化技术:不久前,合肥工业大学以秸秆类生物质废弃物为原料,成功制备出多维数、多尺度、多形态的三维功能催化材料,可去除水体中有机及重金属有毒污染物,解决了秸秆类生物质废弃物难以利用的难题。这一合成方法具有工艺简单、产率高、结构可控及易于规模生产等技术优点,具有广阔的工业化应用前景。相关研究成果发表在环境领域重要期刊《应用催化—环境》。
 
  秸秆堆肥技术:将稻秸秆分层堆叠、浇水、洒发酵菌种,覆盖薄膜封闭,保温保湿,通过样本检测,麦秸秆、芦笋秸秆堆肥后有机质含量、总养分含量较高,PH值适度,可作有机肥利用。秸秆堆肥可以跟农村废弃物处置结合起来,进一步做好农村垃圾分类,将生活可腐垃圾与秸秆一起堆肥,达到农业废弃资源化、减量化、无害化处置目的。
 
  sunliquid生物燃料技术:代生物燃料中,燃料乙醇的生产原料主要是玉米、甘蔗等,生物柴油的生产原料主要是大豆、菜籽油等,因“与人争粮,与农争地”而饱受诟病。相比之下,以麦秆、草和木材等农林废弃物为主要原料的第二代生物燃料(纤维素乙醇、合成生物燃油等)则有着更广泛的发展空间。日前,的特种化学品公司科莱恩宣布,已批准投资新建一家全面的工业化规模工厂,采用其sunliquid技术,以农业废弃物为原料进行纤维素乙醇生产。据了解,sunliquid技术是一种、经济和可持续的生物技术工艺,能够利用麦秸秆、稻草、玉米秸秆和甘蔗渣等各种农业残渣废弃物来生产纤维素乙醇。
 
  秸秆处理一直以来是一个“老大难”的问题,如何处理秸秆与农民之间的矛盾,还需要有农民视角,站在农民的角度考虑问题,方能化解这个“老大难”的问题。
 
  本文由中国农机网(www.nongjx.com)编辑整理。
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