基质浓度对ABR厌氧氨氧化反硝化脱氮除碳效能影响及动力学特征  

The nitrogen/carbon removal and kinetic characteristics of ABR anammox reactor under different substrate concentrations

作　　者：陈重军[1,2,3,4] 张敏 喻徐良[1] 姜滢 汪瑶琪[1] 徐乐中 沈耀良[1,2,3] CHEN Chongjun;ZHANG Min;YU Xuliang;JIANG Ying;WANG Yaoqi;XU Lezhong;SHEN Yaoliang(School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009;Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Suzhou 215009;Jiangsu Key Laboratory of Environmental Science and Engineering,Suzhou 215009 4.Jiangsu Key Laboratory of Anaerobic Biotechnology,Wuxi 214122)

机构地区：[1]苏州科技大学环境科学与工程学院,苏州215009 [2]江苏高校水处理技术与材料协同创新中心,苏州215009 [3]江苏省环境科学与工程重点实验室,苏州215009 [4]江苏省厌氧生物技术重点实验室,无锡214122

出　　处：《环境科学学报》2018年第9期3552-3560,共9页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.51508366;51578353);江苏省厌氧生物技术重点实验室开放基金(No.KFLAB201701)~~

摘　　要：采用厌氧折流板反应器(ABR)为研究对象,以一定COD、NH+4-N和NO-2-N比例增加进水基质浓度,以明确基质负荷提高对ABR厌氧氨氧化和反硝化协同体系脱氮除碳的影响,并通过基质去除模型获得反应器对基质的耐受程度.研究表明,ABR反应器能够实现厌氧氨氧化反硝化耦合脱氮除碳,当进水基质COD、NO-2-N和NH+4-N浓度从220、168和60 mg·L^(-1)提高至420、270和110 mg·L^(-1)时,反应器脱氮效能下降,COD、NO-2-N、NH+4-N和TN去除率分别为97%、94%、30%和78%,厌氧氨氧化对TN去除的贡献率从43.08%骤降至16.49%,反硝化脱氮贡献率从53.81%增至82.07%.动力学模型拟合发现,Stover-Kincannon模型(R2=0.937,TN;R2=0.975,COD)较一级基质去除模型(R2=0.314,TN;R2=0.016,COD)更适合评价反应器对基质的承受力;Stover-Kincannon模型表明,反应器对TN和COD的最大基质利用率分别为1.43 g·L-1·d-1和3.33 g·L-1·d-1,饱和常数(KB)分别为1.2和3.79,研究认为ABR协同脱氮除碳体系理论上还有继续提升基质负荷的潜力.In order to identify the synergistic anammox and denitrification process in anaerobic baffled reactor（ ABR）,the concentrations of COD,NO-2-N and NH＋4-N were controlled to investigate the effect of substrate concentrations on nitrogen and carbon removal. The results show that the removal efficiencies of COD,NO-2-N,NH＋4-N and TN were about 97%,94%,30% and 78%,respectively when the influent COD,NO-2-N,NH＋4-N concentrations were increased from 220,168 and 60 mg·L^-1 to 420,270 and 110 mg·L^-1. With the influent substrate concentrations increased,the contribution of Anammox to TN removal decreased from 43.08% to 16.49%,while the contribution of denitrification increased from 53.81% to 82.07%.The kinetic analysis results show the Stover-Kincannon model（ R2= 0. 937,TN; R2= 0. 975,COD） is more appropriate than the First-order substrate removal model（ R2= 0.314,TN; R2= 0. 016,COD） to describe the tolerance of substrates on the system. The maximum TN and COD utilization rateobtained by Stover-Kincannon model was 1.43 g·L-1·d-1 and 3.33 g·L-1·d-1,while the saturation constant（ KB） was 1.2 and 3.79,respectively. Therefore,it is believed that the ABR,which acts as a synergistic denitrification and decarbonization system,has the potential of increasing the matrix load.

关 键 词：厌氧折流板反应器 基质浓度 脱氮除碳 厌氧氨氧化菌 动力学特征 

分 类 号：X506[环境科学与工程—环境工程] X703