摘要
针对我国大中型沼气工程沼液产生量巨大,沼液还田无法广泛实施,而直接排放又会造成环境污染的问题,通过对大量的文献资料和研究结果进行分析,得出沼液处理的2种主要途径:①降解其中的污染物使其能够达标排放或安全回用,②浓缩并回收沼液中营养物,使沼液体积减量化。建议今后的研究应选择适合的工艺,克服技术难题,以沼液高效利用为目标,以防止环境污染为前提,探索低运行费用的沼液处理方法。
There are huge amount of effluent produced from large and middle scale biogas plants in China.Thus it is very difficult to apply them to farmland.The direct discharge will bring severe pollution to environment.Based on the analysis on massive documents and research results,2 approaches of biogas effluent treatments are obtained： ①degrading the pollutant to make it be discharged after reaching the standard or ②concentrating and recovering the nutrients from the anaerobic digestate,and reducing the effluent volume.It is suggested that the further research program should choose appropriate technology to overcome difficult problem,take high efficient utilization of biogas effluent as objective to prevent environmental pollution,and to explore low-cost methods for biogas effluent treatment.
出处
《中国农业科技导报》
CAS
CSCD
2011年第1期83-87,共5页
Journal of Agricultural Science and Technology
基金
国家生猪现代产业技术体系建设项目(nycytx-09)
公益性行业(农业)科研专项(200803036)
“十一五”国家科技支撑计划项目(2008BADC4B17-03)资助
关键词
沼液
厌氧消化液
处理
沼气工程
biogas effluent
anaerobic digestate
treatment
biogas engineering
