Abstract:An integrated anoxic/oxic-moving bed biofilm reactor (A/O-MBBR) with a scale of 100m3/d was adopted to treat domestic sewage. The performance of carbon and nitrogen removal under multi-factor disturbances was investigated through a 265 day pilot study. Furthermore, the dynamic changes of the microbial community structure in different treatment phases were studied. Results revealed that the integrated A/O-MBBR system showed excellent COD and nitrogen removal performance. Under the conditions of 2.5~3.5mg/L dissolved oxygen (DO) in aerobic tank and influent carbon to nitrogen (COD/N) ratio of (7.9±2.0), the removal rates of COD, NH4+-N and TN could reach (93.3±5.4)%, (99.1±0.6)%, (67.9±10.5)%, respectively. Proteobacteria, Bacteroidetes and Chloroflexi were abundant in different running phases, which ensured the efficient removal of organic matters. In the initial running phase, denitrification functional bacteria of A/O-MBBR system were mainly distributed in activated sludge with relatively low abundance. After a long-term operation, a large number of nitrifying and denitrifying bacteria were simultaneously detected in both biofilm and activated sludge, and the nitrifying bacteria with the highest relative abundance was Nitrospira, which was mainly distributed on the biofilm (19.48%~28.05%). Meanwhile, Thauera, Terrimonas and Dokdonella were the dominant denitrifying bacteria in the later running phase.
赖永恒, 刘敏. A/O-MBBR工艺处理生活污水性能及菌群结构[J]. 中国环境科学, 2022, 42(5): 2120-2128.
LAI Yong-heng, LIU Min. Performance and microbial community of anoxic/oxic-moving bed biofilm reactor (A/O-MBBR) process treating domestic sewage. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(5): 2120-2128.
Lin S S, Shen S L, Zhou A N, et al. Assessment and management of lake eutrophication: A case study in Lake Erhai, China [J]. Science of the Total Environment, 2021,751:141618.
[2]
Wang Q B, Chen Q W. Simultaneous denitrification and denitrifying phosphorus removal in a full-scale anoxic-oxic process without internal recycle treating low strength wastewater [J]. Journal of Environmental Sciences, 2016,39:175-183.
[3]
Gao J S, Duan C S, Huang X, et al. The tolerance of anoxic-oxic (A/O) process for the changing of refractory organics in electroplating wastewater: performance, optimization and microbial characteristics [J]. Processes, 2021,9(6):962.
[4]
Di Trapani D, Mannina G, Torregrossa M, et al. Comparison between hybrid moving bed biofilm reactor and activated sludge system: a pilot plant experiment [J]. Water Science and Technology, 2010,61(4):891- 902.
[5]
王 杰,薛同来,彭永臻,等.A/O系统中不同缺氧/好氧体积比对活性污泥沉降性能的影响 [J]. 中国环境科学, 2016,36(2):443-452. Wang J, Xue T L, Peng Y Z, et al. Effect of different anoxic/aerobic volume ratio on activated sludge settleability in A/O system [J]. China Environmental Science, 2016,36(2):443-452.
[6]
Abdelfattah A, Hossain M I, Cheng L. High-strength wastewater treatment using microbial biofilm reactor: a critical review [J]. World Journal of Microbiology & Biotechnology, 2020,36(5):75.
[7]
Ødegaard H, Rusten B, Westrum T. A new moving-bed biofilm reactor-applications and results [J]. Water Science and Technology, 1994,29(10/11):157-165.
[8]
Yang X F, López-Grimau V, Vilaseca M, et al. Treatment of textile wastewater by CAS, MBR, and MBBR: a comparative study from technical, economic, and environmental perspectives [J]. Water, 2020, 12(5):1306.
[9]
di Biase A, Kowalski M S, Devlin T R, et al. Moving bed biofilm reactor technology in municipal wastewater treatment: A review [J]. Journal of Environmental Management, 2019,247:849-866.
[10]
路 晖,辛 涛,吴 迪,等.MBBR工艺在污水处理厂提量增效中的应用 [J]. 中国给水排水, 2019,35(4):100-105. Lu H, Xin T, Wu D, et al. Application of MBBR in increasing capacity and improving efficiency of a wastewater treatment plant [J]. China Water & Wastewater, 2019,35(4):100-105.
[11]
吴 迪,周家中,郑志佳,等.MBBR用于山西某污水厂提标改造效果分析 [J]. 中国给水排水, 2018,34(15):6-11. Wu D, Zhou J Z, Zheng Z J, et al. Application of MBBR process to upgrading and reconstruction of WWTP in Shanxi Province [J]. China Water & Wastewater, 2018,34(15):6-11.
[12]
栾志翔,吴 迪,韩文杰,等.北方某污水厂MBBR工艺升级改造后的高效脱氮除磷效果 [J]. 环境工程学报, 2020,14(2):333-341. Luan Z X, Wu D, Han W J, et al. Effect of high efficiency nitrogen and phosphorus removal in a wastewater treatment plant in North China [J]. Chinese Journal of Environmental Engineering, 2020,14(2):333-341.
[13]
吴 迪.MBBR在国内的工程应用与发展前景 [J]. 中国给水排水, 2018,34(16):22-31. Wu D. Application and development prospect of MBBR in China [J]. China Water & Wastewater, 2018,34(16):22-31.
[14]
周家中,韩文杰,吴 迪,等.MBBR泥膜复合系统泥膜竞争关系的影响因素 [J]. 中国环境科学, 2020,40(11):4735-4743. Zhou J Z, Han W J, Wu D, et al. Factors influencing the competition between activated sludge and biofilm in hybrid MBBR nitrification system [J]. China Environmental Science, 2020,40(11):4735-4743.
[15]
黄 崇,袁林江,牛晚霞,等.投加填料对微生物群落结构的影响及对水质的变化研究 [J]. 中国环境科学, 2021,41(1):207-213. Huang C, Yuan L J, Niu W X, et al. Effect of dosing suspended fillers on microbial community structure and investigation on variation in water quality [J]. China Environmental Science, 2021,41(1):207-213.
[16]
李 韧,于莉芳,张兴秀,等.硝化生物膜系统对低温的适应特性:MBBR和IFAS [J]. 环境科学, 2020,41(8):3691-3698. Li R, Yu L F, Zhang X X, et al. Adaptability of nitrifying biofilm systems to low temperature: MBBR and IFAS [J]. Environmental Science, 2020,41(8):3691-3698.
[17]
魏小涵,毕学军,尹志轩,等.温度和DO对MBBR系统硝化和反硝化的影响 [J]. 中国环境科学, 2019,39(2):612-618. Wei X H, Bi X J, Yin Z X, et al. Effects of temperature and dissolved oxygen on nitrification and denitrification in MBBR system [J]. China Environmental Science, 2019,39(2):612-618.
[18]
Iannacone F, Di Capua F, Granata F, et al. Effect of carbon-to- nitrogen ratio on simultaneous nitrification denitrification and phosphorus removal in a microaerobic moving bed biofilm reactor [J]. Journal of Environmental Management, 2019,250:109518.
[19]
Nhut H T, Hung N T Q, Sac T C, et al. Removal of nutrients and organic pollutants from domestic wastewater treatment by sponge- based moving bed biofilm reactor [J]. Environmental Engineering Research, 2020,25(5):652-658.
[20]
吴 迪.水处理用悬浮载体填料行业标准解读与投加量设计 [J]. 中国给水排水, 2017,33(16):13-17. Wu D. Interpretation of high density polyethylene suspended carrier for water treatment and calculation of added amount of suspended carrier [J]. China Water & Wastewater, 2017,33(16):13-17.
[21]
国家环境保护总局.水和废水监测分析方法 [M]. 4版.北京:中国环境科学出版社, 2002:227-281. State Environmental Protection Administration. Water and wastewater monitoring and analysis methods [M]. Beijing: China Environmental Science Press, 2002:227-281.
[22]
刘国华,刘禹琛,陈 燕,等.低DO对活性污泥系统碳和氮去除影响的研究 [J]. 中国环境科学, 2020,40(6):2503-2512. Liu G H, Liu Y C, Chen Y, et al. Effects of low dissolved oxygen on carbon and nitrogen removal in activated sludge process [J]. China Environmental Science, 2020,40(6):2503-2512.
[23]
Luo Y S, Yao J Q, Wang X Y, et al. Efficient municipal wastewater treatment by oxidation ditch process at low temperature: Bacterial community structure in activated sludge [J]. Science of the Total Environment, 2020,703:135031.
[24]
Machat H, Boudokhane C, Roche N, et al. Effects of C/N ratio and DO concentration on carbon and nitrogen removals in a hybrid biological reactor [J]. Biochemical Engineering Journal, 2019,151:107313.
[25]
Wang X B, Gao C Y, Jin P K, et al. Nitrogen removal performance and bacterial community in a full-scale modified Orbal oxidation ditch with internal nitrate recycle and biocarriers [J]. Journal of Water Process Engineering, 2020,40:101791.
[26]
王歆鹏,陈 坚,华兆哲,等.硝化菌群在不同条件下的增殖速率和硝化活性 [J]. 应用与环境生物学报, 1999,5(1):64-68. Wang X P, Chen J, Hua Z Z, et al. The optimum growth and nitrification conditions of nitrifying bacteria [J]. Chinese Journal of Applied & Environmental Biology, 1999,5(1):64-68.
[27]
郑 敏,杨 波,汪诚文,等.中试MBBR装置强化NH4+-N去除速率的影响条件研究 [J]. 中国环境科学, 2012,32(10):1778-1783. Zheng M, Yang B, Wang C W, et al. Enhanced ammonia removal rate in a pilot-scale MBBR [J]. China Environmental Science, 2012,32(10): 1778-1783.
[28]
王学江,夏四清,陈 玲,等.DO对MBBR同步硝化反硝化生物脱氮影响研究 [J]. 同济大学学报(自然科学版), 2006,34(4):514-517,538. Wang X J, Xia S Q, Chen L, et al. Effect of DO on simultaneous nitrification and denitrification in MBBR [J]. Journal of Tongji University (Natural Science), 2006,34(4):514-517,538.
[29]
刘良军,万先凯,乐翠华,等.关键参数对MBBR工艺生物膜活性的影响研究 [J]. 环境工程, 2014,12(S1):358-363. Liu L J, Wan X K, Le C H, et al. The effects of key parameters on biomembrane activity of MBBR process [J]. Environmental Engineering, 2014,12(S1):358-363.
[30]
郭莉芳,朱宇峰,滕良方,等.MBBR用于南方某污水厂强化脱氮效果分析 [J]. 中国给水排水, 2020,36(7):101-107. Guo L F, Zhu Y F, Teng L F, et al. Analysis of denitrification efficiency of a wastewater treatment plant in south China enhanced by MBBR [J]. China Water & Wastewater, 2020,36(7):101-107.
[31]
韩文杰,吴 迪,周家中,等.长三角地区MBBR泥膜复合污水厂低温季节微生物多样性分析 [J]. 环境科学, 2020,41(11):5037-5049. Han W J, Wu D, Zhou J Z, et al. Microbial diversity analysis of WWTPs based on hybrid-MBBR process in a low temperature season in the Yangtze River Delta [J]. Environmental Science, 2020,41(11): 5037-5049.
[32]
Liu J B, Tian Z Y, Zhang P Y, et al. Influence of reflux ratio on two-stage anoxic/oxic with MBR for leachate treatment: Performance and microbial community structure [J]. Bioresource Technology, 2018, 256:69-76.
[33]
Cydzik-Kwiatkowska A, Zielinska M. Bacterial communities in full- scale wastewater treatment systems [J]. World Journal of Microbiology & Biotechnology, 2016,32:66.
[34]
方德新,吉芳英,许晓毅,等.高原高寒污水处理系统的微生物群落特征 [J]. 中国环境科学, 2020,40(3):1081-1088. Fang D X, Ji F Y, Xu X Y, et al. Microbial community characteristics of wastewater treatment systems in high-altitude and cold regions [J]. China Environmental Science, 2020,40(3):1081-1088.
[35]
支 尧,张光生,郑凯凯,等.生物吸附/A2O组合工艺处理城市污水效能及其微生物群落结构 [J]. 应用与环境生物学报, 2017,23(5): 892-899. Zhi Y, Zhang G S, Zheng K K, et al. Operation performance and microbial structure in a combined biological adsorption/A2O system [J]. Chinese Journal of Applied & Environmental Biology, 2017,23 (5):892-899.
[36]
Iannaconea F, Di Capuab F, Granataa F, et al. Simultaneous nitrification, denitrification and phosphorus removal in a continuous- flow moving bed biofilm reactor alternating microaerobic and aerobic conditions [J]. Bioresource Technology, 2020,310:123453.
[37]
信 欣,管 蕾,姚艺朵,等.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, 2016,37(6):2259- 2265. Xin X, Guan L, Yao Y D, et al. Long-term performance and bacterial community composition analysis of AGS-SBR treating the low COD/N sewage at low DO concentration condition [J]. Environmental Science, 2016,37(6):2259-2265.
[38]
Guo X C, Li B, Zhao R X, et al. Performance and bacterial community of moving bed biofilm reactors with various biocarriers treating primary wastewater effluent with a low organic strength and low C/N ratio [J]. Bioresource Technology, 2019,287:121424.
[39]
Gao N, Xia M, Dai J C, et al. Both widespread PEP-CTERM proteins and exopolysaccharides are required for floc formation of Zoogloea resiniphila and other activated sludge bacteria [J]. Environmental Microbiology, 2018,20(5):1677-692.
[40]
Rodriguez-Sanchez A, Leyva-Diaz J C, Gonzalez-Martinez A, et al. Linkage of microbial kinetics and bacterial community structure of MBR and hybrid MBBR-MBR systems to treat salinity-amended urban wastewater [J]. Biotechnology Progress, 2017,33(6):1483-1495.
[41]
Zhang Q, Chen X, Zhang Z Y, et al. Performance and microbial ecology of a novel moving bed biofilm reactor process inoculated with heterotrophic nitrification-aerobic denitrification bacteria for high ammonia nitrogen wastewater treatment [J]. Bioresource Technology, 2020,315:125831.
[42]
Yuan H Z, Li Y, Wang K. Effect of influent ammonia nitrogen concentration on microbial community in MBBR reactor [J]. Water Science and Technology, 2021,83(1):162-172.
[43]
Liu T, He X L, Jia G Y, et al. Simultaneous nitrification and denitrification process using novel surface-modified suspended carriers for the treatment of real domestic wastewater [J]. Chemosphere, 2020,247:125831.
[44]
Pishgar R, Dominic J A, Sheng Z Y, et al. Denitrification performance and microbial versatility in response to different selection pressures [J]. Bioresource Technology, 2019,281:72-83.
[45]
杨 平,周家中,管勇杰,等.基于MBBR的AAO和Bardenpho工艺改造效果对比 [J]. 中国给水排水, 2021,37(7):11-19. Yang P, Zhou J Z, Guan Y J, et al. Comparison of AAO and Bardenpho process [J]. China Water & Wastewater, 2021,37(7):11-19.