沼液利用途径分析

Analysis on Utilization of Biogas Slurry

沼液是畜禽粪便厌氧发酵后的残留液,其中包含的矿物质丰富,如对其进行合理利用,将给人类带来一定的经济价值;如不妥善处置,沼液的随意排放将引起湖泊、河流富营养化等环境污染问题。我国沼液的主要利用方式包括直接归田、沼液浸种、叶面肥、饲料添加剂等,其中直接归田是当前沼液最主要的利用方式,但沼液直接归田也存在很大的环境风险。因此,开发低成本、高效益的沼液安全利用途径是我国今后研究的重要方向。

Biogas slurry was the anaerobic fermentation of livestock manure,which was rich in nutrients.It would bring some economic values for human beings if it′s used rationally.However,when discharged arbitrarily,it would cause lakes and rivers eutrophication and other environmental pollution if it′s.The main used of biogas slurry include turn to farmland directly,soaking seeds,foliar fertilizer,feed additives in China,in which turned to farmland directly was the most common method.However,turning to farmland may cause the environmental pollution.Developing lowcost,higheffective way of the safe use of biogas slurry was the important direction for our future research.