摘要
以笔者所在实验室实现部分硝化的生活污水为原水,并作为厌氧序批式反应器(ASBR)进水,在温度为(24±0.5)℃、pH值为8.0~8.2时,通过添加定量的NaNO_(2)或CH_(3)COONa,分别考察基质比(NO^(-)_(2)-N/NH^(+)_(4)-N)、水力停留时间(HRT)和C/N比(COD/NH^(+)_(4)-N)对厌氧氨氧化(Anammox)耦合反硝化脱氮除碳的影响,并采用响应面法探究三者的交互作用。结果表明,当基质比为1.4~1.6、HRT为33 h、C/N比为3~5时,系统Anammox的耦合反硝化脱氮除碳效果最佳;方差分析结果显示各因素对总氮去除率(TNR)的影响程度为:C/N比>HRT>基质比;最佳匹配方案:C/N比为4.28,HRT为33.48 h,基质比为1.46,平行试验验证得到的平均TNR为90.12%。
The partial nitrificated domestic sewage treated in the autors'laboratory was added into the anaerobic ammoxation ASBR reactor as raw wastewater,and NaNO_(2) or CH_(3)COONa was added quantitatively when the temperature was(24±0.5)℃and pH was 8.0~8.2.The effects of NO^(-)_(2)-N/NH^(+)_(4)-N ratio,hydraulic retention time(HRT)and C/N ratio(COD/NH^(+)_(4)-N)on anammox coupled denitrification and decarbonization were investigated respectively.The interaction among the three factors was explored by response surface analysis method.The results show that,when the NO^(-)_(2)-N/NH^(+)_(4)-N ratio was 1.4~1.6,HRT was 33 h,and C/N ratio was 3~5,the system's anammox coupled denitrification and carbon removal efficiency were the highest.Analysis of variance(ANOVA)results show that the degree of influence of each factor on the total nitrogen removal rate(TNR)was:C/N ratio>HRT>NO^(-)_(2)-N/NH^(+)_(4)-N ratio.The optimal matching scheme is C/N ratio:4.28,HRT:33.48 h,and NO^(-)_(2)-N/NH^(+)_(4)-N ratio:1.46,and the average TNR verified by parallel experiments was 90.12%.
作者
陈永志
袁忠玲
张民安
张明
秦彦荣
安芳娇
CHEN Yongzhi;YUAN Zhongling;ZHANG Min'an;ZHANG Ming;QIN Yanrong;AN Fangjiao(School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,Gansu,China;Technical Center of Sewage Treatment Industry in Gansu,Lanzhou 730070,Gansu,China;Gansu Provincial Key Laboratory of Yellow River Water Environment,Lanzhou 730070,Gansu,China)
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2021年第11期69-79,共11页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51668033)
甘肃省自然科学基金资助项目(18JR3RA126)
甘肃省高等学校特色专业-环境工程项目(101004)。
关键词
厌氧氨氧化
脱氮除碳
响应面法
厌氧序批式反应器
基质比
anaerobic ammonium oxidation
removal of carbon and nitrogen
response surface method
anaerobic ammoxation ASBR reactor
NO^(-)_(2)-N/NH+4-N ratio
作者简介
陈永志(1969-),男,教授,博士生导师,主要从事水污染处理和过程控制、脱氮除磷等研究。E-mail:476411589@qq.com。
