基于DO和ORP一阶导数的短程硝化SBR实时控制研究
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摘要
以序批式生物反应器(Sequencing Batch Reactor,SBR)为基础,研究了短程硝化SBR启动过程中在线监测信号(溶解氧(DO)和氧化还原电位(ORP))的变化规律,考察了不同进水氨氮负荷下DO和ORP一阶导数的变化特征,并对SBR中不同阶段的微生物群落结构进行了对比分析.结果表明,在特定的运行条件下(29～30℃,初始pH>8.2,SRT=14),避免硝化阶段的过度曝气,可在第6 d实现短程硝化-反硝化SBR的快速启动.SBR对氨氮去除率维持在97%以上,亚硝化率(NAR)可长期稳定在98%以上.对SBR运行过程中的DO和ORP进行了长期监测,并对它们的一阶导数进行实时计算,结果发现,在短程硝化终点和反硝化终点处,DO与ORP的一阶导数均出现了极值,并且在不同进水氨氮负荷下,极值基本维持稳定.微生物群落分析结果表明,全程硝化阶段的污泥中同时含有氨氧化菌(AOB)和亚硝酸氧化菌(NOB),短程硝化污泥中几乎不含NOB.研究表明,利用DO和ORP的一阶导数极值作为控制参数是稳定可行的,对实现短程硝化SBR工艺的实时控制具有潜在的研究和应用价值.
This study focused on the variation of online signals(DO and ORP) based on the sequencing batch reactor(SBR), and investigated the variation characteristics of the first-derivatives of DO and ORP with different NH~+_4-N loads, and analyzed the microbial community structure in different operation stages of SBR. The results showed that the nitritation-denitrification SBR started rapidly on the 6~(th) day with controlled operation conditions(temperature 29～30 ℃, initial pH>8.2, SRT=14 d) and avoiding excessive aeration. The removal efficiency of ammonium was more than 97%, and the nitrite accumulation rate(NAR) was higher than 98%. The first-derivatives of DO and ORP were monitored on for a long time. The first-derivatives of both DO and ORP had extremums at the end of nitritation and denitrification periods,and the values were stable under different ammonium loads. The analysis results of microbial community showed that nitrification sludge contained both AOB and NOB, while nitritation sludge almost did not contain NOB. The results demonstrate that it is stable and feasible using the extremum values of first-derivative of DO and ORP as the control parameters in nitritation SBR, which has a potentially application value to realize the real-time control on nitritation SBR.
This study focused on the variation of online signals(DO and ORP) based on the sequencing batch reactor(SBR), and investigated the variation characteristics of the first-derivatives of DO and ORP with different NH~+_4-N loads, and analyzed the microbial community structure in different operation stages of SBR. The results showed that the nitritation-denitrification SBR started rapidly on the 6~(th) day with controlled operation conditions(temperature 29～30 ℃, initial pH>8.2, SRT=14 d) and avoiding excessive aeration. The removal efficiency of ammonium was more than 97%, and the nitrite accumulation rate(NAR) was higher than 98%. The first-derivatives of DO and ORP were monitored on for a long time. The first-derivatives of both DO and ORP had extremums at the end of nitritation and denitrification periods,and the values were stable under different ammonium loads. The analysis results of microbial community showed that nitrification sludge contained both AOB and NOB, while nitritation sludge almost did not contain NOB. The results demonstrate that it is stable and feasible using the extremum values of first-derivative of DO and ORP as the control parameters in nitritation SBR, which has a potentially application value to realize the real-time control on nitritation SBR.
引文
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Claros J,Serralta J,Seco A,et al.2012.Real-time control strategy for nitrogen removal via nitrite in a SHARON reactor using pH and ORP sensors[J].Process Biochemistry,47(10):1510-1515
丁文川,吴丹,曾晓岚,等.2012.不同曝气量对SBBR短程硝化微生物特性及氮转化的影响[J].环境科学学报,32(9):2112-2118
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高大文,彭永臻,杨庆,等.2003.应用实时控制实现和稳定短程硝化反硝化[J].中国给水排水,19(12):1-5
高景峰,彭永臻,王淑莹,等.2001.以DO、ORP、pH控制SBR法的脱氮过程[J].中国给水排水,17(4):6-11
Guo J H,Peng Y Z,Wang S Y,et al.2009.Effective and robust partial nitrification to nitrite by real-time aeration duration control in an SBR treating domestic wastewater[J].Process Biochemistry,44(9):979-985
Hulle S W V,Volcke E I,Teruel J L,et al.2007.Influence of temperature and pH on the kinetics of the Sharon nitritation process[J].Journal of Chemical Technology & Biotechnology Biotechnology,82(5):471-480
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李嘉懿,杜青平,刘嵩,等.2018.有机负荷对垃圾沥滤液短程硝化系统影响及微生物相探析[J].环境科学学报,38(6):2334-2341
李彭.2014.不同电子供体深度脱氮工艺及微生物群落特征研究[D].北京:清华大学
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刘宏,彭永臻,卢炯元,等.2017.温度对间歇曝气SBR短程硝化及硝化活性的影响[J].环境科学,38(11):4656-4663
刘文龙,彭永臻,苗圆圆,等.2015.好氧饥饿对膨胀污泥硝化性能及污泥特性的影响[J].化工学报,66(3):1142-1149
毛巍.2014.短程硝化工艺的实现与耐盐驯化及其微生物群落结构变化研究[D].杭州:浙江大学
彭永臻.2011.SBR法污水生物脱氮除磷及过程控制[M].北京:科学出版社
Pérez J,Lotti T,Kleerebezem R,et al.2014.Outcompeting nitrite-oxidizing bacteria in single-stage nitrogen removal in sewage treatment plants:a model-based study[J].Water Research,66:208
Regmi P,Miller M W,Holgate B,et al.2014.Control of aeration,aerobic SRT and COD input for mainstream nitritation/denitritation[J].Water Research,57(5):162-171
Wang B,Peng Y,Guo Y,et al.2016.Illumina MiSeq sequencing reveals the key microorganisms involved in partial nitritation followed by simultaneous sludge fermentation,denitrification and anammox process[J].Bioresource Technology,207:118
吴军,张悦,徐婷,严刚.2016.AOB溶解氧亲和力低于NOB条件下序批反应器中NOB淘汰的实现机制[J].中国环境科学,36(12):3583-3590
信欣,管蕾,姚艺朵,等.2016.低DO下AGS-SBR处理低COD/N生活污水长期运行特征及种群分析[J].环境科学,37(6):2259-2265
邢丽贞,郑德瑞,孔进,等.2016.高氨氮废水短程硝化过程中N2O释放试验研究[J].环境科学学报,36(4):1260-1265
徐婷,王丽,吴军.2016.不同pH条件下短程硝化序批实验和数学模拟[J].环境工程学报,10(6):2840-2846
杨庆,杨玉兵,杨忠启,黄斯婷,周薛扬,刘秀红.2018.溶解氧对短程硝化稳定性及功能菌群的影响[J].中国环境科学,38(9):3328-3334
Yang J,Trela J,Plaza E,et al.2016.Oxidation‐reduction potential (ORP) as a control parameter in a single‐stage partial nitritation/anammox process treating reject water[J].Journal of Chemical Technology & Biotechnology,91(10):2582-2589
张功良,李冬,张肖静,等.2014.低温低氨氮SBR短程硝化稳定性试验研究[J].中国环境科学,34(3):610-616
周露,郎建,李桥.2012.短程硝化反硝化快速启动及稳定运行研究[J].土木建筑与环境工程,34(5):132-135
祝贵兵,彭永臻,郭建华.2008.短程硝化反硝化生物脱氮技术[J].哈尔滨工业大学学报,1(10):1552-1557
Zanetti L,Frison N,Nota E,et al.2012.Progress in real-time control applied to biological nitrogen removal from wastewater:A short-review[J].Desalination,286(1):1-7
Claros J,Serralta J,Seco A,et al.2012.Real-time control strategy for nitrogen removal via nitrite in a SHARON reactor using pH and ORP sensors[J].Process Biochemistry,47(10):1510-1515
丁文川,吴丹,曾晓岚,等.2012.不同曝气量对SBBR短程硝化微生物特性及氮转化的影响[J].环境科学学报,32(9):2112-2118
Daverey A,Su S H,Huang Y T,et al.2013.Partial nitrification and anammox process:a method for high strength optoelectronic industrial wastewater treatment[J].Water Research,47(9):2929-2937
高大文,彭永臻,杨庆,等.2003.应用实时控制实现和稳定短程硝化反硝化[J].中国给水排水,19(12):1-5
高景峰,彭永臻,王淑莹,等.2001.以DO、ORP、pH控制SBR法的脱氮过程[J].中国给水排水,17(4):6-11
Guo J H,Peng Y Z,Wang S Y,et al.2009.Effective and robust partial nitrification to nitrite by real-time aeration duration control in an SBR treating domestic wastewater[J].Process Biochemistry,44(9):979-985
Hulle S W V,Volcke E I,Teruel J L,et al.2007.Influence of temperature and pH on the kinetics of the Sharon nitritation process[J].Journal of Chemical Technology & Biotechnology Biotechnology,82(5):471-480
Kornaros M,Dokianakis S N,Lyberatos G.2010.Partial nitrification/denitrification can be attributed to the slow response of nitrite oxidizing bacteria to periodic anoxic disturbances[J].Environmental Science & Technology,44(19):7245
李嘉懿,杜青平,刘嵩,等.2018.有机负荷对垃圾沥滤液短程硝化系统影响及微生物相探析[J].环境科学学报,38(6):2334-2341
李彭.2014.不同电子供体深度脱氮工艺及微生物群落特征研究[D].北京:清华大学
刘宏,南彦斌,李慧,等.2018.间歇曝气模式下曝气量对短程硝化恢复的影响[J].环境科学,39(2):865-871
刘宏,彭永臻,卢炯元,等.2017.温度对间歇曝气SBR短程硝化及硝化活性的影响[J].环境科学,38(11):4656-4663
刘文龙,彭永臻,苗圆圆,等.2015.好氧饥饿对膨胀污泥硝化性能及污泥特性的影响[J].化工学报,66(3):1142-1149
毛巍.2014.短程硝化工艺的实现与耐盐驯化及其微生物群落结构变化研究[D].杭州:浙江大学
彭永臻.2011.SBR法污水生物脱氮除磷及过程控制[M].北京:科学出版社
Pérez J,Lotti T,Kleerebezem R,et al.2014.Outcompeting nitrite-oxidizing bacteria in single-stage nitrogen removal in sewage treatment plants:a model-based study[J].Water Research,66:208
Regmi P,Miller M W,Holgate B,et al.2014.Control of aeration,aerobic SRT and COD input for mainstream nitritation/denitritation[J].Water Research,57(5):162-171
Wang B,Peng Y,Guo Y,et al.2016.Illumina MiSeq sequencing reveals the key microorganisms involved in partial nitritation followed by simultaneous sludge fermentation,denitrification and anammox process[J].Bioresource Technology,207:118
吴军,张悦,徐婷,严刚.2016.AOB溶解氧亲和力低于NOB条件下序批反应器中NOB淘汰的实现机制[J].中国环境科学,36(12):3583-3590
信欣,管蕾,姚艺朵,等.2016.低DO下AGS-SBR处理低COD/N生活污水长期运行特征及种群分析[J].环境科学,37(6):2259-2265
邢丽贞,郑德瑞,孔进,等.2016.高氨氮废水短程硝化过程中N2O释放试验研究[J].环境科学学报,36(4):1260-1265
徐婷,王丽,吴军.2016.不同pH条件下短程硝化序批实验和数学模拟[J].环境工程学报,10(6):2840-2846
杨庆,杨玉兵,杨忠启,黄斯婷,周薛扬,刘秀红.2018.溶解氧对短程硝化稳定性及功能菌群的影响[J].中国环境科学,38(9):3328-3334
Yang J,Trela J,Plaza E,et al.2016.Oxidation‐reduction potential (ORP) as a control parameter in a single‐stage partial nitritation/anammox process treating reject water[J].Journal of Chemical Technology & Biotechnology,91(10):2582-2589
张功良,李冬,张肖静,等.2014.低温低氨氮SBR短程硝化稳定性试验研究[J].中国环境科学,34(3):610-616
周露,郎建,李桥.2012.短程硝化反硝化快速启动及稳定运行研究[J].土木建筑与环境工程,34(5):132-135
祝贵兵,彭永臻,郭建华.2008.短程硝化反硝化生物脱氮技术[J].哈尔滨工业大学学报,1(10):1552-1557
Zanetti L,Frison N,Nota E,et al.2012.Progress in real-time control applied to biological nitrogen removal from wastewater:A short-review[J].Desalination,286(1):1-7
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