生物炭对畜禽粪污好氧堆肥品质影响的研究进展

Research Progress on the Effect of Carbon on the Quality of Aerobic Composting of Livestock and Poultry Manure

我国是一个畜禽养殖大国,每年产生大量畜禽粪污,传统堆肥方式易造成堆体中氮素流失,重金属含量偏高,产生CH4、H2S等有害气体,降低了堆肥品质,同时污染土壤和环境。因此,如何提高畜禽粪污好氧堆肥过程中堆体的固氮能力,减少温室气体排放,改善堆体肥料化品质是目前研究的热点。本文综述了生物炭对畜禽粪污堆肥过程中堆体理化性质、养分含量、有害气体排放、重金属钝化的影响,并对生物炭作为添加剂应用于堆肥的深入研究进行了展望。

China is a big country of livestock and poultry breeding,which produces a large amount of livestock and poultry manure every year.The traditional composting method is easy to cause the loss of nitrogen in the pile,the high content of heavy metals,CH4,H2S and other harmful gases,which reduces the composting quality and pollutes the soil and environment.Therefore,how to improve the nitrogen fixation capacity of the compost during aerobic composting of livestock and poultry manure,reduce greenhouse gas emissions and improve the composting quality of the compost is a hot research topic at present.In this paper,the effects of biochar on physical and chemical properties,nutrient content,harmful gas emission and heavy metal passivation of livestock and poultry manure composting were summarized,and the further research of biochar as additive in composting was prospected.