摘要
矿化状垃圾填埋物在长期厌氧稳定化过程中形成了一些独特的理化性质和微生物学特性,使其可用于水处理工艺。以矿化状垃圾填埋物为填充物,研究其在短程反硝化和厌氧氨氧化工艺中对系统性能的影响。结果表明:矿化状垃圾填埋物可通过短程反硝化实现亚硝酸盐积累,当进水C/N为2时NO_(2)^(-)-N积累达50%,可为后续与厌氧氨氧化耦合脱氮提供基质;批次实验表明矿化状垃圾填埋物对厌氧氨氧化具有促进作用,使NH_(4)^(+)-N和NO_(2)^(-)-N去除率分别由62%和90%增至68%和96%;连续流实验表明,填充矿化状垃圾填埋物可通过强化厌氧氨氧化工艺实现废水高效脱氮,反应器容积氮负荷达0.63 kg·m^(-3)·d^(-1),NH_(4)^(+)-N和NO_(2)^(-)-N的去除率分别为81%和91%。本研究结果可为矿化状垃圾填埋物应用于氨氮废水处理工艺,进而实现垃圾填埋物资源化利用并有效处理氨氮废水提供参考。
Distinctive physio-chemical and microbial properties have emerged over the long-term anaerobic stabilization of organics in landfill,which makes the aged refuse a promising additive for wastewater treatment.This study investigated the long-term performance of denitrification and anammox with the addition of aged refuse.The results showed that nitrite accumulated through shortcut denitrification with aged refuse At influent C/N of 2,nearly 50%NO_(2)^(-)-N was accumulated,providing the substrate for the subsequent anammox Batch tests indicated that aged refuse improved anammox performance,with the removal efficiencies of NH_(4)^(+)-N and NO_(2)^(-)-N increased from 62%and 90%to 68%and 96%,respectively.The continuous experiment showed that an enhanced anammox process could achieve efficient nitrogen removal.The reactor volumetric loading rate was 0.63 kg·m^(-3)·d^(-1).The removal efficiencies of NH_(4)^(+)-N and NO_(2)^(-)-N were 81%and 91%,respectively.It is a promising way to treat the ammonium-rich wastewater by addition of aged refuse.
作者
冯帆
柴立元
熊鑫
唐溪
柴喜林
唐崇俭
FENG Fan;CHAI Liyuan;XIONG Xin;TANG Xi;CHAI Xilin;TANG Chongjian(School of Metallurgy and Environment,Central South University,Changsha 410083,China;National Engineering Research Centre for Control and Treatment of Heavy Metal Pollution,Changsha 410083,China;Jiangxi Gaia Environmental Protection Technology Co.Ltd,Shangrao 334100,China)
出处
《环境工程学报》
CAS
CSCD
北大核心
2022年第2期409-420,共12页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(U21A20294,51878662)
湖南省科技计划重点项目(2017SK2420)
中南大学基础科研业务费专项资金(2017zzts599)。
