沼液成分与重金属含量分析  

Analysis of Biogas Slurry Composition and Heavy Metal Content

作　　者：辛格 高亚茹[2] 陈国松[2] 刘畅[1] 杨祝红[1,3] 陆小华 

机构地区：[1]南京工业大学材料化学工程国家重点实验室,江苏南京210009 [2]南京工业大学化学与分子学院,江苏南京211816 [3]南京欧帕吉医药科技有限公司,江苏南京210042

出　　处：《化工时刊》2018年第1期9-16,共8页Chemical Industry Times

基　　金：国家自然科学基金(21476106);973计划(2013CB733501)

摘　　要：沼气工程产生的大量沼液已成为制约沼气发展的瓶颈问题。我们对江苏省16家规模化养殖场的沼气工程排放沼液进行了成分和重金属含量的调查,结果表明,沼液的pH值偏高,在7.87-8.57之间,重金属元素Cr普遍超标,但As元素含量基本符合排放标准。然而总氮、总磷、COD含量都严重超标。对于降低沼液中总氮、总磷和重金属含量,提出了可能的解决方法。The large amounts of biogas slurry produced by Biogas Plants have become a bottle neck in the devel- opment of Biogas Plants. The digested piggery wastewater from sixteen large - scale farms in Jiangsu province were in- vestigated includingthe chemical oxygen demand, nitrogen, phosphorus, the pH and heavy metals content. It was shown that the pH value of the biogas slurry was high with values from 7.87 to 8.57. The content of the Cr in the bio- gas slurry exceeded the standard of national emission, while the content of the As met the discharge standard. Howev- er,the content of total nitrogen, phosphorus and COD seriously exceeded the standard. A possible solution was pro- posed to reduce the content of the total nitrogen, total phosphorus andheavy metals in the biogas slurry.

关 键 词：沼液重金属含量 总磷 总氮 

分 类 号：S216.4[农业科学—农业机械化工程]