有机固废厌氧消化沼液特征及其处理和资源化利用方法综述  

Review on Characteristics of Anaerobic Digestion Biogas Liquid of Organic Solid Wastes and the Methods of Treatment and Resource Utilization

作　　者：冯洁 董滨[1] 王磊[1] FENG Jie;DONG Bin;WANG Lei(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《净水技术》2023年第9期30-40,共11页Water Purification Technology

基　　金：国家重点研发计划课题(2018YFC1900905)。

摘　　要：近年来,国内以中温厌氧消化为主的沼气工程发展迅速,产生大量沼液,沼液处理成为沼气工厂亟待解决的问题。文中从沼液的性质出发,系统总结了沼液的处理技术,包括生物处理法、物理化学法和组合工艺,以满足沼液中污染物去除和达标排放的目的。沼液中富含氮、磷等营养元素,沼液处理不能有效利用沼液资源,因此,随后分析了微藻培养、鸟粪石沉淀、氨气提-酸吸收3种沼液资源化利用途径,论述了从沼液中回收有价值产品的潜力。文章建议,未来沼气工厂的发展应逐步实现沼液资源循环利用,以减少沼气工程对环境的影响,并提高工厂的经济盈利能力。研究对于创建资源节约型、环境友好型社会具有重要意义。In recent years,the rapid development of biogas engineering with mesophilic anaerobic digestion at home has produced a large amount of biogas liquid,and the treatment of biogas liquid has become an urgent problem to be solved in biogas plants.Based on the properties of biogas liquid,a systematic summary of biogas liquid treatment technology,including biological treatment,physicalchemical treatment and combined processes,have been introduced in order to meet the nutrient removal and discharge standards.The biogas liquid is rich in nitrogen and phosphorus,and the biogas liquid treatment cannot effectively recovery the resources,therefore,three resource utilization ways including microalgae culture,struvite precipitation,ammonia stripping-acid absorption have been analyzed to explore the potential of these methods to recover valuable nutrient from biogas liquid.This paper suggests that the future development of biogas plants should gradually realize the recycling of resources from biogas liquid,in order to reduce the impact of biogas engineering on the environment,and improve the economic profitability of the plants,which is of great significance for creating a resource-saving and environment-friendly society.

关 键 词：有机固废 沼液特征 沼液处理 营养物去除 资源化利用 

分 类 号：X703[环境科学与工程—环境工程]