摘要
厌氧消化技术可以有效解决有机废弃物污染问题和实现资源化,是一种具有广阔应用前景的有机废弃物处理技术。厌氧消化处理的残余物——沼液,含有大量的磷,如果直接排放会产生污染问题,而由于我国农业和城市的特点,许多厌氧消化工程的沼液并不适合采用土地利用的方式。处理后排放,沼液中磷的达标处理成为达标处理的瓶颈。介绍了几种除磷和回收磷的方法,同时认为实现沼液的达标排放处理需要将低耗处理与附加利用技术相结合,在寻求低成本回收磷的同时,减轻沼液的后续处理压力。
Anaerobic digestion is a technology which has potential application in organic solid waste treatment,whieh can solve the pollution of organic solid waste and realize the waste reuse and reclamation. The digested effluent, containing high amount of N and P, would cause pollution if it discharge without treatment. Meanwhile,land use is not suitable for the digested effluent of mostly biogas project because of the characteristic of agriculture and eity. The concentration of P in treated effluent cannot meet the legal standard,which is a bottleneck for standard discharge. This paper presents several technology about removal and recovery of P, and it is necessary to combine low consumption treatment with utilization technology for standard discharge of digested effluent,P recovery at low cost and reducing the stress of following treatment.
出处
《安徽农业科学》
CAS
2014年第30期10701-10704,共4页
Journal of Anhui Agricultural Sciences
关键词
有机废弃物
厌氧消化
沼液
除磷
磷回收
Organic solid waste
Anaerobic digestion
Digested effluent
Phosphorus removal
Phosphorus recovery
