桂林理工大学学报2024，Vol.44Issue(1)：131-137,7.DOI:10.3969/j.issn.1674-9057.2024.01.018
矿源比对自养反硝化深度脱氮除磷性能的影响
Deep denitrification and dephosphorization performance of autotrophic denitrification in different ore mass ratios
摘要
Abstract
Aiming at the problems of high sulfate concentration in effluent from conventional filter media of auto-trophic denitrification technology and inability to remove phosphorus synchronously,the denitrification and de-phosphorization performance of composite mineral sources filter media(MSAD)is explored through batch experi-ments,and the denitrification and dephosphorization effects of pyrite(FeS2)and siderite(FeCO3)at different mass ratios are analyzed.The results show that,compared with single FeS2 as electron donor,the composite min-eral sources(FeS2 and FeCO3)possess higher nitrate removal rate,lower sulfate concentration and more stable pH value.On the 4th day of stable operation after domestication,the system with m(FeS2)∶m(FeCO3)= 2∶1 exhib-itsd supreme denitrification performance(removal rate of NO3--N is 93%,and TN is 86%).The removal efficiency of total phosphorus in the system with m(FeS2)∶m(FeCO3)= 1∶1 is the highest(65%).Species analysis show that the microbial species responsible for sulfide autotrophic denitrification are dominant in the composite mineral source.This study provides a theoretical reference for the selection of mineral sources in engineering practice of autotrophic denitrification technology.关键词
自养反硝化/硫铁矿/菱铁矿/脱氮除磷Key words
autotrophic denitrification/pyrite/siderite/denitrification and dephosphorization分类
资源环境引用本文复制引用
钟溢健,陆祖贤,李金城,黄晶,罗雪静,王潇潇..矿源比对自养反硝化深度脱氮除磷性能的影响[J].桂林理工大学学报,2024,44(1):131-137,7.基金项目
新疆重大科技专项(2016A03008-1) （2016A03008-1）
桂林市科学研究与技术开发计划项目(20220124-7 （）
20220114-3) （）
