摘要
厌氧消化被广泛应用于餐厨垃圾、有机废弃物和高浓度废水等的资源化处理,但实际应用中,厌氧消化常由于易酸化、氨氮抑制和产甲烷菌对环境因素敏感等原因,造成消化过程不稳定、产甲烷率低等问题。生物炭具备制备简单、原料来源广泛和成本低廉等优点,将其添加至厌氧消化系统中,可维持体系稳定运行和提升厌氧消化产甲烷效率。介绍了生物炭的制备方法和理化特征,并从生物炭提升厌氧消化系统缓冲能力、吸附抑制剂从而缓解氨氮抑制及其作为微生物载体等方面,对生物炭促进厌氧消化的效果和机理进行了综述。
Anaerobic digestion is widely used in the recycling treatment of kitchen waste,urban organic waste and high-concentration wastewater.However,due to the accumulation of organic acids,inhibition of the produced ammonia nitrogen and high sensitivity of methanogenic bacteria to environmental factors,the digestion process is often unstable with low methane production rate in practical application.Biochar has the advantages of simple preparation,wide source of raw materials and low cost,and it can be added into the anaerobic digestion system to maintain the stable operation of the anaerobic digestion system and improve the efficiency of methane production.In this paper,the preparation methods,physical and chemical characteristics of biochar were introduced.Meanwhile,the effect and mechanism of biochar on anaerobic digestion were also reviewed based on the following aspects:enhancing buffering capacity of anaerobic digestion system,alleviating the inhibition of ammonia nitrogen through adsorbing the inhibitors,and serving as microbial carriers due to its abundant pores and large specific surface area.
作者
唐梦园
赵佳奇
邱春生
王冰冰
王仁杰
钟亮
孙力平
TANG Meng-yuan;ZHAO Jia-qi;QIU Chun-sheng;WANG Bing-bing;WANG Ren-jie;ZHONG Liang;SUN Li-ping(School of Environmental and Municipal Engineering,Tianjin Chengjian University,Tianjin 300384,China;Tianjin Key Laboratory of Aquatic Science and Technology,Tianjin 300384,China)
出处
《环境工程》
CAS
CSCD
北大核心
2021年第9期138-145,共8页
Environmental Engineering
基金
国家自然科学基金(51478291)
天津市大学生创新创业训练计划项目(202010792030)。
关键词
生物炭
理化特性
厌氧消化
缓冲作用
氨氮抑制
载体
biochar
physical and chemical properties
anaerobic digestion
buffering effect
ammonia nitrogen suppression
carrier