2024年7月18日 星期一 19:43:55

废水亦能变肥水,白沙高地淀粉厂尝到治污甜头

 

   “现在这套系统产生的沼气,返回动力系统进行再利用,效果非常好。”日前,在白沙黎族自治县七坊镇的高地淀粉厂,该厂厂长李学谷指着运转正常的废水循环利用系统对记者说:“以往,每天烧锅炉的煤就要花7000多元,现在只要2000元,光是每天节省的买煤费用就有5000元。”
   记者看到,在生产区旁边,两个庞大的水泥制的沉淀池里,装着满满的排放物。有错综的管道通往沼气系统,而经过沼气池出来的水,则变得清了许多。水从沼气池出来后,又经过3级过滤池,最后流到一个大水塘,有农民正在从水塘里抽水灌溉。
  七坊镇高地六队农民陆国成家的甘蔗,浇了塘里的水以后,绿油油的,长势喜人。陆国成说,这个大水塘为他们免费提供了肥料,不管是浇甘蔗、木薯,还是浇水稻、香蕉,都长得好。周围有5000多亩农作物,都从中受益。前些天干旱,许多村民还来争水用呢。
  李学谷介绍说,在淀粉生产过程中,不可避免要产生废水,不经处理就排放,污染很大。去年开始,他们花400多万元上马这套废水循环利用环保系统,2个月前开始试运行。该系统既节约了动力费用,又解决了环保问题,还使农民受益,可谓一举三得。
  白沙黎族自治县国土环境资源局局长王文评价说,高地淀粉厂的这套废水循环利用系统,从试运行的情况看确实很成功,而且该厂的环保系统还得到省环保部门的高度评价。
  
 

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