京郊大中型沼气工程沼液养分及重金属含量分析  

Nutrient and Heavy Metal Contents in Biogas Slurry of Large Scaled Biogas Project in Suburb of Beijing

作　　者：曲明山[1] 郭宁[1] 刘自飞[1] 王一帆[1] 赵国龙 金曼 陈清[3] 

机构地区：[1]北京市土肥工作站,北京100029 [2]北京市顺义区农业科学研究所,北京101300 [3]中国农业大学资源与环境学院,北京100193

出　　处：《中国沼气》2013年第4期37-40,共4页China Biogas

基　　金：北京市农业局<沼液;沼渣农田使用技术试验示范>项目(20090608)

摘　　要：为指导沼液的高效合理施用,对4种不同发酵原料的沼液养分及重金属含量作了分析。结果发现:牛粪(n=7)和混合原料(n=4)厌氧发酵产生的沼液有机质含量比猪粪(n=6)和鸡粪(n=3)原料偏高,不同原料沼液的全氮、全磷、全钾养分含量差异不大,沼液过0.5 mm筛后,沼液有机质、全氮、全磷、全钾含量均有所降低。沼液样品中可以检出重金属铬、汞,镉等,但未超过有机肥料中对重金属含量的限量标准。The total nltrogen（TN） ,total phasphorus（TP） ,total potassium（TK） ,organic matter and heavy metals of 20 bio- gas slurry samples were analyzed. The results showed that the organic matter contents in the biogas slurry from cow dung di- gesters （ n = 7 ） and mixed raw material digesters （ n = 4） were higher comparing with that from pig manure digesters （ n = 6 ） and chicken manure digesters （ n = 3 ）. There were no significant differences in TN, rip and TK contents in biogas slur- ry from different raw materials. The contents of organic matter, TN, TP and TK in the hiogas slurry decreased after the slurry passing through the 0.5mm sieve. Heavy metals such as chromium, mercury, cadmium were found in biogas slurry, however, it did not exceed the limited heavy metals standard for organic fertilizer.

关 键 词：京郊沼气工程 农用现状 沼液养分 

分 类 号：S216.4[农业科学—农业机械化工程] X713[农业科学—农业工程]