摘要
为探讨短程反硝化耦合厌氧氨氧化快速启动过程及不同进水ρ(COD)/ρ(NO_(3)^(-)-N)对耦合系统脱氮性能的影响,采用UASB反应器接种缺氧池污泥成功启动短程反硝化耦合厌氧氨氧化反应。第一阶段在ρ(COD)/ρ(NO_(3)^(-)-N)值为2的条件下启动耦合工艺,92d后NH_(4)^(+)-N和NO_(3)^(-)-N去除率分别达到98.54%、54.27%,反应器启动成功;第二阶段在进水中加入不同浓度的有机碳源,研究ρ(COD)/ρ(NO_(3)^(-)-N)对氮素转化效果的影响,当进水ρ(COD)/ρ(NO_(3)^(-)-N)值为3.5时NH_(4)^(+)-N去除率最高,达到了99.22%;当进水ρ(COD)/ρ(NO_(3)^(-)-N)值为4.0时NO_(3)^(-)-N去除率最高,达到了79.55%。三维荧光光谱技术结合平行因子法分析结果表明,出水中溶解性有机物(DOM)主要成分为类蛋白质、类富里酸和类胡敏酸。随着反应器启动时间的延长(1~92d),3种组分的荧光强度得分逐渐降低后趋于稳定;当进水中有机碳源的浓度发生改变时(93~164d),荧光强度得分均呈波动式变化,且类蛋白质在进水ρ(COD)/ρ(NO_(3)^(-)-N)值为4.0时达到最大值。
In order to investigate the effect of rapid start-up process of short-cut denitrification coupled with anammox andρ(COD)/ρ(NO_(3)^(-)-N)value on the nitrogen removal performance of the coupled system,the short-cut denitrification coupled with anammox was successfully initiated using UASB reactor inoculation with sludge in anoxic pond.In the first stage,the coupled process was started under the condition thatρ(COD)/ρ(NO_(3)^(-)-N)value was 2,the removal rates of NH_(4)^(+)-N and NO_(3)^(-)-N reached 98.54%and 54.27%respectively after 92 days,which indicated the start-up was successful.In the second stage,organic carbon sources with different concentrations was added into the influent water,so as to investigate the effect ofρ(COD)/ρ(NO_(3)^(-)-N)value on nitrogen transformantion,when the values ofρ(COD)/ρ(NO_(3)^(-)-N)were 3.5 and 4.0 respectively,the highest removal rates of NH_(4)^(+)-N and NO3-N were obtained,which reached 99.22%and 79.55%respectively.The analysis results of three-dimensional fluorescence spectrum technology combined with parallel factor method showed that,the main components of dissolved organic matters(DOM)in the effluent water were protein-like,fulvic-like and humoidslike substances.With the prolongation of the startup time of the reactor(1~92 d),the fluorescence intensity score of the three components gradually decreased and then stabilized;when the concentration of the organic carbon source in the influent water was changed(93-164 d),the fluorescence intensity score fluctuated,and protein-like reached the maximum value when theρ(COD)/ρ(NO_(3)^(-)-N)value was 4.0.
作者
叶冬梅
李卫华
薛同站
余丽
YE Dongmei;LI Weihua;XUE Tongzhan;YU Li(School of Environmental and Energy Engineering,Anhui Jianzhu University,Hefei230601China;Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse,Hefei230601China)
出处
《工业用水与废水》
CAS
2023年第1期18-23,50,共7页
Industrial Water & Wastewater
基金
国家自然科学基金资助项目(51978003)
安徽省自然科学基金项目(2108085ME186)
安徽高校自然科学研究项目(KJ2020A0467,KJ2020A0469)
安徽省住房城乡建设科学技术计划项目(2020YF37)
环境污染控制与废弃物资源化利用安徽省重点实验室主任基金(2020EPC01)
中国长江三峡集团有限公司科研项目——长江中游地区村镇污水处理模式研究(合同编号:202003082)。
关键词
短程反硝化
厌氧氨氧化
脱氮
三维荧光光谱
pattial denitrification
anammox
nitrogen removal
three dimensional fluorescence spectrum
