摘要
针对含NO3^--N与较高浓度SO_4^(2-)实际工业废水处理较难的问题,考察了不同水力停留时间(HRT)下连续运行的CO_2^-氢基质膜生物膜反应器(CO_2^-MBf R)处理模拟废水和实际工业废水的性能,结果表明,2种废水的出水NO3^--N浓度均随着HRT的减小而增大,模拟废水中NO3^--N的处理效果和电子通量分配比例均优于实际废水,但其电子通量分配的格局基本不变:NO3^--N和SO_4^(2-)的电子通量分别在90.09%～97.49%和2.51%～9.91%左右.要实现实际废水总氮达到15mg/L的排放标准,需维持HRT不少于10.4h.
Due to the difficulty of NO3--N removal during treatment of high-sulfate(SO4 2-)actual industrial wastewater(AIW)treatment,we tested the effects of hydraulic retention time(HRT)on treatment performance of simulated wastewater and AIW using CO2-hydrogen based membrane biofilm reactor(CO2-MBfR).Results show that the effluent concentrations of NO3--N from two kinds of wastewater gradually increased with decreased HRT,and the removal efficiency of NO3--N and electron flux distribution ratio(EFDR)in simulated wastewater treatment were better than that of in AIW treatment,but the electron flux distribution pattern was nearly the same:the EFDR of NO3--N and SO4 2-were 90.09%~97.49%and 2.51%~9.91%,respectively.Overall,our results reveal that CO2-MBfR could high efficiently remove NO3--N of AIW.From a practical perspective,HRT higher than 10.4h is suggested for achieving the total nitrogen emission standard of 15mg/L in the actual wastewater treatment.
作者
冉雅郡
杨潇潇
汪作炜
吴成阳
周云
夏四清
RAN Ya-jun;YANG Xiao-xiao;WANG Zuo-wei;WU Cheng-yang;ZHOU Yun;XIA Si-qing(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China;Environmental Protection and Water Administration Bureau of Shenzhen Nanshan District,Shenzhen 518000,China)
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2018年第9期3322-3327,共6页
China Environmental Science
基金
国家自然科学基金资助项目(51678422)。
关键词
二氧化碳-氢基质膜生物膜反应器
实际工业废水
水力停留时间
硝酸盐氮
硫酸盐
carbon dioxide-hydrogen based membrane biofilm reactor(CO2-MBfR)
actual industrial wastewater
hydraulic retention time(HRT)
NO3--N
SO4 2-
