摘要
为探索一种用于处理低碳氮比(c(C)/c(N))高速公路服务区污水的应急处理方法,采用绿沸石这种天然沸石,实现降低NH3-N质量浓度以提高污水碳氮比,并分别从污水NH3-N质量浓度高低、曝气量、投加量和重复使用等4方面开展绿沸石的污水处理效果实验。结果表明:控制曝气强度为1.5 L/min,用20 g/L绿沸石处理NH3-N质量浓度为62.92、146.14 mg/L的污水,可将NH3-N分别降至17.95、22.69 mg/L,去除率达71.47%、84.47%;当绿沸石的投加量增加到80 g/L时,也将进一步提升NH3-N去除率至95.04%,即7.35 mg/L;在曝气方面,加大曝气强度会提升NH3-N去除率,在1.0、1.5、2.0 L/min时,对应去除率分别70.98%、81.33%和89.11%;绿沸石重复使用2次,NH3-N去除率分别为84.47%和85.26%,说明绿沸石具有可重复使用性。因此,可将绿沸石作为处理高速公路服务区污水的一种应急方法予以考虑和工程应用。
Explore an emergency treatment method for treating sewage in the service area of low-carbon nitrogen ratio(c(C)/c(N))expressway,use natural zeolite as a natural zeolite to reduce the NH3-N mass concentration to improve the carbon-nitrogen ratio of sewage,and carry out experiments on the sewage treatment effect of vertegolite from four aspects,such as the level of NH3-N mass concentration,aeration,dosage and reuse.The results show that the control aeration intensity is 1.5 L/min,and the treatment of Sewage with NH3-N mass concentrations of 62.92 and 146.14 mg/L with 20 g/L pyroxene can reduce NH3-N to 17.95 and 22.69 mg/L,respectively,and the removal rate reaches 71.47%and 84.47%,respectively;when the amount of chlorite is increased to 80 g/L,the NH3-N removal rate will be further improved to 95.04%,that is,7.35 mg/L;in terms of aeration,Increasing the aeration intensity will increase the NH3-N removal rate,at 1.0,1.5,2.0 L/min,the corresponding removal rate is 70.98%,81.33%and 89.11%,respectively;chlorite is reused twice,and the NH3-N removal rate is 84.47%and 85.26%,indicating that chlorite is reusable.Therefore,verolite can be considered and applied as an emergency method for treating sewage in the highway service area.
作者
曾波
赵红
任天成
邓利智
吴永明
邓觅
ZENG Bo;ZHAO Hong;REN Tiancheng;DENG Lizhi;WU Yongming;DENG Mi(Jiangxi Transportation Research Institute Co.,Ltd.,Nanchang 330200,China;Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Education,School of Resources&Environment Nanchang University,Nanchang 330031,China;Institute of Microbiology,Jiangxi Academy of Sciences,Nanchang 330096,China)
出处
《能源研究与管理》
2022年第2期49-54,共6页
Energy Research and Management
基金
江西省重点研发计划项目(20202BBGL73084)
江西省交通运输厅重大研发专项科技项目(2021Z0003)。
关键词
绿沸石
低碳氮比污水
氨氮
应急方法
zeolite
low-carbon nitrogen ratio sewage
ammonia nitrogen
emergency methods
