生物炭对人工快渗系统氨氮去除的影响研究  

Effect of Biochar on the Removal of Ammonia Nitrogen in Artificial Rapid Infiltration Systems

作　　者：陈佼 李晓媛 刘欢 林华峰 刘浩霖 黄雯 陆一新[1] CHEN Jiao;LI Xiaoyuan;LIU Huan;LIN Huafeng;LIU Haolin;HUANG Wen;LU Yixin(School of Materials and Environmental Engineering,Chengdu Technological University,Chengdu 611730,China;Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China)

机构地区：[1]成都工业学院材料与环境工程学院,成都611730 [2]西南交通大学地球科学与环境工程学院,成都611756

出　　处：《成都工业学院学报》2022年第3期35-41,共7页Journal of Chengdu Technological University

基　　金：四川省科技计划项目(2022YFG0307,22YYJC3490);国家环境保护水土污染协同控制与联合修复重点实验室开放基金项目(GHBK-2021-004);国家级大学生创新训练计划项目(202011116031);成都工业学院“青苗计划”项目(QM2021003)。

摘　　要：采用限氧热解法在500℃条件下制备了羊粪、兔粪、猪粪生物炭(分别标记为SMB_(500)、RMB_(500)、PMB_(500)),考察了将生物炭作为人工快渗(CRI)系统滤料时对污水中NH_(4)^(+)—N去除的影响。结果表明,SMB_(500)比RMB_(500)、PMB_(500)具有更强的NH_(4)^(+)—N吸附能力,将其作为滤料添加于CRI系统(R_(1))后NH_(4)^(+)—N平均去除率达97.8%,比未添加SMB_(500)的CRI系统(R_(2))提高了12.6个百分点。SMB_(500)的添加提高了NH_(4)^(+)—N在各滤料层的去除效率,从而使CRI系统的脱氮效果得到明显提升。动力学分析结果表明,当进水NH_(4)^(+)—N浓度为10.4~60.5 mg/L时,R_(1)的NH_(4)^(+)—N去除速率常数m值是R_(2)的1.21~1.79倍,添加SMB_(500)可使CRI系统获得更高的NH_(4)^(+)—N去除速率。SMB_(500)作为一种新的滤料类型应用于强化CRI系统的脱氮性能具有良好的可行性。Sheep manure,rabbit manure and pig manure biochar(labelled as SMB_(500),RMB_(500) and PMB_(500) respectively)were prepared by oxygen-limited pyrolysis at 500℃.The effect of biochar on the removal of NH_(4)^(+)—N in wastewater was investigated when it was used as filter media for artifical rapid infiltration(CRI)systems.The results showed that SMB_(500) had stronger NH_(4)^(+)—N adsorption ability than RMB_(500) and PMB_(500),and the average NH_(4)^(+)—N removal efficiency was 97.8%after adding it as filter media to the CRI system(R_(1)),which was 12.6 percentage points higher than that of the CRI system(R_(2))without SMB_(500) addition.The addition of SMB_(500) improved the removal efficiency of NH_(4)^(+)—N in each filter layer,thus significantly improving the nitrogen removal effect of the CRI system.The results of the kinetic analysis showed that the NH_(4)^(+)—N removal rate constant m of R_(1) was 1.21-1.79 times higher than that of R_(2) at influent NH_(4)^(+)—N concentrations of 10.4-60.5 mg/L.The addition of SMB_(500) resulted in a higher NH_(4)^(+)—N removal rate for the CRI system.SMB_(500) has good feasibility as new filter media to enhance the nitrogen removal performance of CRI systems.

关 键 词：生物炭 人工快渗系统 氨氮 去除 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]