A<sup>2</sup>O工艺和A<sup>2</sup>O+BCO工艺的脱氮除磷性能比较

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Abstract A²O and A²O+BCO process were employed to treat domestic wastewater with low carbon to nitrogen ratio (C/N=3.96) to compare their nutrient removal performance,respectively. The influent loading and operation condition were kept consistent for 134 days, A²O+BCO system achieved a higher nitrogen and phosphorus removal efficiency than A²O system because of the application of denitrifying phosphorus removal technology and two-sludge theory, which could use carbon resource more efficiently and solve the SRT contradiction between nitrifiers and PAOs. PAOs accounts for 22% in the stable A²O+BCO system higher than 7% in the A²O system, which explain the mechanism for the superior nutrient removal performance.

Key words： low C/N ratio A²O process A²O+BCO process denitrifying phosphorus removal two sludge

Received: 20 August 2018

PACS:

X703.5

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	Articles by authors
	ZHAO Wei-hua
	WANG Mei-xiang
	LI Jian-wei
	FENG Yan
	LIU Bo
	LI Xi-yao
	PENG Yong-zhen

Cite this article:

ZHAO Wei-hua,WANG Mei-xiang,LI Jian-wei等. Nitrogen and phosphorus removal performance comparison between A²O and A²O+BCO system[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(3): 994-999.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I3/994

[1]	Wang X L, Peng,Y Z, Wang S Y, et al. Influence of wastewater composition on nitrogen and phosphorus removal and process control in A2O process[J]. Bioprocess and Biosystems Engineering, 2006, 28(6):397-404.
[2]	Kapagiannidis A G, Zafiriadis I, Aivasidis A. Upgrading the efficiency of an external nitrification BNR system-The modified Dephanox process[J]. Chemical Engineering Journal, 2011,175:124-135.
[3]	Sorm R, Bortone G, Saltarelli R, et al. Phosphate uptake under anoxic conditions and fixed-film nitrification in nutrient removal activated sludge system[J]. Water Research, 1996,30(7):1573-1584.
[4]	毕学军,张波.倒置A2/O工艺生物脱氮除磷原理及其生产应用[J]. 环境工程, 2006,(3):29-30. Bi Xuejun, Zhang Bo. The principle and full-scale application of reversed A2O process for removing nitrogen and phosphorus[J]. Environmental Engineering, 2006,(3):29-30.
[5]	Zeng W, Bai X, Zhang L, et al. Population dynamics of nitrifying bacteria for nitritation achieved in Johannesburg (JHB) process treating municipal wastewater[J]. Bioresource Technology, 2014,162:30-37.
[6]	Kapagiannidis A G, Zafiriadis I, Aivasidis A. Comparison between UCT type and DPAO biomass phosphorus removal efficiency under aerobic and anoxic conditions[J]. Water Science and Technology, 2009,60(10):2695-2703.
[7]	王聪,王淑莹,张淼,等.硝化液回流比对A2/O-BCO工艺反硝化除磷特性的影响[J]. 中国环境科学, 2014,(11):2844-2850. Wang Cong, Wang Shuying, Zhang Miao, et al. Effect of nitrate recycling ratio on denitrifying phosphorus removal characteristics in A2/O-BCO process[J]. China Environmental Science, 2014,(11):2844-2850.
[8]	Kuba T, Vanloosdrecht M, Heijnen J J. Phosphorus and nitrogen removal with minimal cod requirement by integration of denitrifying dephosphatation and nitrification in a two-sludge system[J]. Water Research, 1996,30(7):1702-1710.
[9]	Zilles J L, Peccia J, Kim M W, et al. Involvement of Rhodocyclusrelated organisms in phosphorus removal in full-scale wastewater treatment plants[J]. Appled and Envionmental Microbiology, 2002, 68(6):2763-2769.
[10]	张杰,臧景红,杨宏,等.A2/O工艺的固有缺欠和对策研究[J]. 给水排水, 2003,29(3):22-26. Zhang Jie, Zang Jinghong, Yang Hong, et al. A Study on the inherent shortcomings and countermeasures of the A2/O process[J]. 2003,29(3):22-26.
[11]	张淼,彭永臻,王聪,等.三段式硝化型生物接触氧化反应器的启动及特性[J]. 中国环境科学, 2015,(1):101-109. Zhang Miao, Peng Yongzhen, Wang Cong, et al. The start-up and characterization of a three-stage nitrification biological contact oxidation reactor[J]. China Environmental Science, 2015,(1):101-109.
[12]	Guo J, Ma F, Chang C, et al. Start-up of a two-stage bioaugmented anoxic-oxic (A/O) biofilm process treating petrochemical wastewater under different DO concentrations[J]. Bioresource Technology, 2009, 100(14):3483-3488.
[13]	Malsumoto S, Terada A, Tsuneda S. Modeling of membrane-aerated biofilm:Effects of C/N ratio, biofilm thickness and surface loading of oxygen on feasibility of simultaneous nitrification and denitrification[J]. Biochemical Engineering Journal, 2007,37(1):98-107.
[14]	Grisa A M C, Paese C, Dotto O J, et al. Chemometric analysis of an sanitary landfill leachate[J]. Journal of Water Resource and Protection, 2012,04(1):16-24.
[15]	李银波,周少奇,邱育真,等.回流比对投料A2/O工艺脱氮除磷影响的中试研究[J]. 环境科学与技术, 2010,(2):142-145. Li Yinbo, Zhou Shaoqi, Qiu Yuzhen, et al. Effect of mixed-liquid return ratio on A2/O Process Performance[J]. Environmental Science & Technology. 2010,(2):142-145.
[16]	杨小梅,邓猛,王羽华,等.硝化液回流比对A2/O-MBBR工艺反硝化除磷效果的影响[J]. 环境工程, 2015,33(8):13-16, 41. Yang Xiaomei, Deng Meng, Wang Yuhua, et al. Effect of nitrification liquid reflux ratio on denitrifying phosphorus removal in an A2/O-MBBR process[J]. Environmental Engineering, 2015,33(8):13-16,41.
[17]	Chen Y Z, Peng C Y, Wang J H, et al. Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic (A(2)/O)-biological aerated filter (BAF) system[J]. Bioresource Technology, 2011,102(10):5722-5727.
[18]	Wang Y Y, Peng Y Z, Stephenson T. Effect of influent nutrient ratios and hydraulic retention time (HRT) on simultaneous phosphorus and nitrogen removal in a two-sludge sequencing batch reactor process[J]. Bioresource Technology, 2009,100(14):3506-3512.
[19]	Hu Z R, Wentzel M C, Ekama G A. Anoxic growth of phosphateaccumulating organisms (PAOs) in biological nutrient removal activated sludge systems[J]. Water Research, 2002,36(19):4927-4937.
[20]	Zhao W H, Zhang Y, Lv D M, et al. Advanced nitrogen and phosphorus removal in the pre-denitrification anaerobic/anoxic/aerobic nitrification sequence batch reactor (preA2NSBR) treating low carbon/nitrogen (C/N) wastewater[J]. Chemical Engineering Journal, 2016,(302):296-304.
[21]	Chen Y, Li B, Ye L, et al. The combined effects of COD/N ratio and nitrate recycling ratio on nitrogen and phosphorus removal in anaerobic/anoxic/aerobic (A2/O)-biological aerated filter (BAF) systems[J]. Biochemical Engineering Journal, 2015,93:235-242.
[22]	Zhang W T, Peng Y Z, Ren N Q, et al. Improvement of nutrient removal by optimizing the volume ratio of anoxic to aerobic zone in AAO-BAF system[J]. Chemosphere, 2013,93(11):2859-2863.
[23]	Zhao W H, Wang M X, Huang Y, et al. Denitrifying phosphorus removal optimization in the pre-A2NSBR system:nitrate recycling, carbon/nitrogen ratio and carbon source type[J]. Front. Environ. Sci. Eng. 2018,12(5):8.
[24]	赵伟华,王梅香,吕冬梅,等.前置A2NSBR工艺系统的启动特性研究. 中国环境科学[J]. 2016,36(9):2689-2695. Zhao Weihua, Wang Meixiang, Lv Dongmei, et al. Start-up characteristics of the pre-A2NSBR Process. China Environmental Science[J]. 2016,36(9):2689-2695.