HRT对CO2-MBfR去除高SO42-废水中NO3--N的影响

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摘要

针对含NO₃^--N与较高浓度SO₄^2-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CO₂-氢基质膜生物膜反应器（CO₂-MBfR）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SO₄^2-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.

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	冉雅郡
	杨潇潇
	汪作炜
	吴成阳
	周云
	夏四清

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

Abstract：

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.

Key words： carbon dioxide-hydrogen based membrane biofilm reactor (CO₂-MBfR) actual industrial wastewater hydraulic retention time (HRT) NO₃^--N SO₄^2-

收稿日期: 2018-02-12

X703

基金资助:

国家自然科学基金资助项目（51678422）

通讯作者: 夏四清,教授,siqingxia@tongji.edu.cn E-mail: siqingxia@tongji.edu.cn

作者简介: 冉雅郡(1995-),女,重庆垫江人,同济大学硕士研究生,研究方向为水污染控制及资源化研究.发表论文1篇.

引用本文:

冉雅郡, 杨潇潇, 汪作炜, 吴成阳, 周云, 夏四清. HRT对CO₂-MBfR去除高SO₄^2-废水中NO₃^--N的影响[J]. 中国环境科学, 2018, 38(9): 3322-3327. RAN Ya-jun, YANG Xiao-xiao, WANG Zuo-wei, WU Cheng-yang, ZHOU Yun, XIA Si-qing. Effects of HRT on the removal of NO₃^--N from high SO₄^2- wastewater using CO₂-MBfR. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(9): 3322-3327.

链接本文:

http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2018/V38/I9/3322

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