Effect of HRT and aeration rate on performance of AAO-BAF system for denitrifying phosphorus removal

doi:10.3969/j.issn.0438-1157.2014.04.039

CIESC Journal ›› 2014, Vol. 65 ›› Issue (4): 1436-1442.DOI: 10.3969/j.issn.0438-1157.2014.04.039

Previous Articles Next Articles

Effect of HRT and aeration rate on performance of AAO-BAF system for denitrifying phosphorus removal

ZHANG Weitang¹, HOU Feng^2,3, LIU Qingsong¹, SHAO Yanqing^2,3, XUE Xiaofei^2,3, PENG Yongzhen¹

1 Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
2 Beijing Beihuaqingchuang Environmental Science and Technology Co., Ltd., Beijing 100124, China;
3 Beijing Enterprises Water Group(China) Investment Limited, Beijing 100124, China

Received:2013-07-22 Revised:2013-09-10 Online:2013-10-21 Published:2014-04-05
Supported by:
supported by the Science and Technology Projects of Beijing (D121100000112001) and the Scientific Research Base and Scientific Innovation Platform of Beijing Municipal Education Commission.

HRT和曝气量对AAO-BAF系统反硝化除磷性能的影响

张为堂¹, 侯锋^2,3, 刘青松¹, 邵彦青^2,3, 薛晓飞^2,3, 彭永臻¹

1 北京工业大学北京市水质科学与水环境恢复重点实验室, 北京 100124;
2 北京北华清创环境科技有限公司, 北京 100124;
3 北控水务（中国）投资有限公司, 北京 100124

通讯作者: 彭永臻
作者简介:张为堂（1978—），男，博士研究生。
基金资助:
北京市科技计划项目（D121100000112001）；北京市教委科技创新平台项目。

Abstract

Abstract: Integrated anaerobic/anoxic/oxic process with biological aerated filter, AAO-BAF system was used to treat domestic wastewater with low C/N ratio of about 4. By adjusting influent flow rate of the AAO reactor and aeration rate of BAF, the effect of hydraulic retention time (HRT) and aeration rate on the performance of the AAO-BAF system was investigated. The results showed that air/liquid ratio and hydraulic load rate (HLR) of BAF had great influence on NH₄⁺ removal. At air/liquid ratio 3:1, NH₄⁺ removal rate decreased to 72%. Further, when HRT = 4 h and HLR of BAF was 3 m³·m^-2·h^-1, NH₄⁺ could not be removed completely even with a high air/liquid ratio of 8:1. This work confirmed that there was an obvious relationship between PO₄^3- and NH₄⁺ removal efficiencies in the AAO-BAF system. The NH₄⁺ removal should reach 98% for over 90% of the PO₄^3- removal. When HRT of the AAO reactor was greater than 6 h, and air/liquid ratio of BAF was greater than 4:1, the average removal efficiencies of COD, NH₄⁺, TN and PO₄³^-could reach 87%, 99%, 80% and 95% respectively.

Key words: denitrifying phosphorous removal, biotechnology, aeration, oxidation, waste water

摘要： 以COD/TN为4左右的生活污水为处理对象，通过调节系统进水流量和曝气生物滤池（BAF）曝气量，研究了水力停留时间（HRT）和BAF气水比对AAO-BAF反硝化除磷系统运行性能的影响。结果表明，气水比和水力负荷（HLR）对BAF的硝化性能有显著影响，BAF气水比为3：1时，NH₄⁺去除率降低到了72%；当AAO的HRT为4 h，BAF的HLR为3 m³·m^-2·h^-1时，即使BAF的气水比达到8：1，也不能保证NH₄⁺的完全去除。试验得出，AAO-BAF反硝化除磷系统的PO₄^3-去除率与NH₄⁺去除率存在良好的相关关系，为保证90%以上的磷去除率，NH₄⁺去除率应该达到98%。当AAO的HRT≥6 h，BAF气水比≥4：1时，AAO-BAF系统对COD、NH₄⁺、TN和PO₄^3-的去除率分别可达87%、99%、80%和95%。

关键词: 反硝化除磷, 生物技术, 曝气, 氧化, 废水

CLC Number:

X703.1

ZHANG Weitang, HOU Feng, LIU Qingsong, SHAO Yanqing, XUE Xiaofei, PENG Yongzhen. Effect of HRT and aeration rate on performance of AAO-BAF system for denitrifying phosphorus removal[J]. CIESC Journal, 2014, 65(4): 1436-1442.

张为堂, 侯锋, 刘青松, 邵彦青, 薛晓飞, 彭永臻. HRT和曝气量对AAO-BAF系统反硝化除磷性能的影响[J]. 化工学报, 2014, 65(4): 1436-1442.

References

[1] Kuba T, van Loosdrecht M C 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 Res., 1996, 30(7): 1702-1710
[2] Zhou Y, Pijuan M, Yuan Z G. Development of a 2-sludge, 3-stage system for nitrogen and phosphorous removal from nutrient-rich wastewater using granular sludge and biofilms [J]. Water Res., 2008, 42(12): 3207-3217
[3] Carvalho G, Lemos P C, Oehmen A, Reis M. Denitrifying phosphorus removal: Linking the process performance with the microbial community structure [J]. Water Res., 2007, 41(19): 4383-4396
[4] Ma Y, Peng Y Z, Wang X L. Improving nutrient removal of the AAO process by an influent bypass flow by denitrifying phosphorus removal [J]. Desalination, 2009, 246(1-3): 534-544
[5] Xu X Y, Liu G, Zhu L. Enhanced denitrifying phosphorous removal in a novel anaerobic/aerobic/anoxic (AOA) process with the diversion of internal carbon source [J]. Bioresource Technol., 2011, 102(22): 10340-10345
[6] Chen Y Z, Peng C Y, Wang J H, Ye L, Zhang L C, Peng Y Z. Effect of nitrate recycling ratio on simultaneous biological nutrient removal in a novel anaerobic/anoxic/oxic (A₂/O)-biological aerated filter (BAF) system [J]. Bioresource Technol., 2011, 102(10): 5722-5727
[7] Wang Jianhua(王建华), Chen Yongzhi(陈永志), Peng Yongzhen(彭永臻). Biofilm formation and startup of nitrification biological aeration filter [J]. Chinese Journal of Environmental Engineering(环境工程学报), 2010, 4(10): 2199-2203
[8] Wang Y Y, Geng J J, Ren Z J, He W T, Xing M Y, Wu M, Chen S W. Effect of anaerobic reaction time on denitrifying phosphorus removal and N₂O production [J]. Bioresource Technol., 2011, 102(10): 5674- 5684
[9] Brdjanovic D, Slamet A, van Loosdrecht M, Hooijmans C M, Alaerts G, Heijnen J J. Impact of excessive aeration on biological phosphorus removal from wastewater [J]. Water Res., 1998, 32(1):200-208
[10] Brown P, Ong S K, Lee Y W. Influence of anoxic and anaerobic hydraulic retention time on biological nitrogen and phosphorus removal in a membrane bioreactor [J]. Desalination, 2011, 270(1/2/3): 227-232
[11] Wang Ximing(王希明), Liu Ying(刘莹), Peng Yongzhen(彭永臻). Effect of re-aerobic tank HRT on the nutrient removal performance of a modified A2N process [J]. Acta Scientiae Circumstantiae(环境科学学报), 2010, 30(9): 1772-1777
[12] Mendoza-Espinosa L, Stephenson T. A review of biological aerated filters for wastewater treatment [J]. Environ. Eng. Sci., 1999, 16: 201-216
[13] He S, Xue G, Kong H. The performance of BAF using natural zeolite as filter media under conditions of low temperature and ammonium shock load [J]. J. Hazard. Mater., 2007, 143: 291-295
[14] Ha J, Ong S, Surampalli R. Impact of media type and various operating parameters on nitrification in polishing biological aerated filters [J]. Environ. Eng. Res., 2010, 15(2): 79-84
[15] Albuquerque A, Makinia J, Pagilla K. Impact of aeration conditions on the removal of low concentrations of nitrogen in a tertiary partially aerated biological filter [J]. Ecological Engineering, 2012, 44: 44-52
[16] APHA. Standard Methods for the Examination of Water and Wastewater [M]. 21st ed. Washington, DC: American Public Health Association/American Water Works Association/Water Environment Federation, 2005
[17] Bassin J P, Kleerebezem R, Dezotti M, van Loosdrecht M. Simultaneous nitrogen and phosphate removal in aerobic granular sludge reactors operated at different temperatures [J]. Water Res., 2012, 46(12): 3805-3816
[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 Technol., 2009, 100(14): 3506-3512
[19] Wu Changyong(吴昌永), Peng Yongzhen(彭永臻), Wang Shuying(王淑莹), Ren Nanqi(任南琪), Wan Chunli(万春黎). Effect of enhancing denitrifying phosphorus removal on microbial population variation in A₂O process [J]. CIESC Journal (化工学报), 2010, 61(1): 186-191
[20] Wang Rongchang(王荣昌), Si Shupeng(司书鹏), Yang Dianhai(杨殿海), Li Jianquan(励建全), Zhao Jianfu(赵建夫). Effects of temperature on denitrifying phosphorus removal in enhanced biological phosphorus removal (EBPR)process [J]. Acta Scientiae Circumstantiae(环境科学学报), 2013, 33(6): 1535-1544
[21] Li Simin(李思敏), Du Guoshuai(杜国帅), Tang Fengbing(唐锋兵). Experimental study on treatment of low C/N wastewater by combined A₂/O process with multipoint feeding [J]. CIESC Journal (化工学报), 2013, 64(10): 3805-3811

Effect of HRT and aeration rate on performance of AAO-BAF system for denitrifying phosphorus removal

HRT和曝气量对AAO-BAF系统反硝化除磷性能的影响

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Baiyu YANG, Yue KOU, Juntao JIANG, Yali ZHAN, Qinghong WANG, Chunmao CHEN. Chemical conversion of dissolved organic matter in petrochemical spent caustic along a wet air oxidation pretreatment process [J]. CIESC Journal, 2023, 74(9): 3912-3920.
[2]	Xuejin YANG, Jintao YANG, Ping NING, Fang WANG, Xiaoshuang SONG, Lijuan JIA, Jiayu FENG. Research progress in dry purification technology of highly toxic gas PH₃ [J]. CIESC Journal, 2023, 74(9): 3742-3755.
[3]	Xin YANG, Xiao PENG, Kairu XUE, Mengwei SU, Yan WU. Preparation of molecularly imprinted-TiO₂ and its properties of photoelectrocatalytic degradation of solubilized PHE [J]. CIESC Journal, 2023, 74(8): 3564-3571.
[4]	Linzheng WANG, Yubing LU, Ruizhi ZHANG, Yonghao LUO. Analysis on thermal oxidation characteristics of VOCs based on molecular dynamics simulation [J]. CIESC Journal, 2023, 74(8): 3242-3255.
[5]	Jintong LI, Shun QIU, Wenshou SUN. Oxalic acid and UV enhanced arsenic leaching from coal in flue gas desulfurization by coal slurry [J]. CIESC Journal, 2023, 74(8): 3522-3532.
[6]	Kaixuan LI, Wei TAN, Manyu ZHANG, Zhihao XU, Xuyu WANG, Hongbing JI. Design of cobalt-nitrogen-carbon/activated carbon rich in zero valent cobalt active site and application of catalytic oxidation of formaldehyde [J]. CIESC Journal, 2023, 74(8): 3342-3352.
[7]	Pan LI, Junyang MA, Zhihao CHEN, Li WANG, Yun GUO. Effect of the morphology of Ru/α-MnO₂ on NH₃-SCO performance [J]. CIESC Journal, 2023, 74(7): 2908-2918.
[8]	Bin LI, Zhenghu XU, Shuang JIANG, Tianyong ZHANG. Clean and efficient synthesis of accelerator CBS by hydrogen peroxide catalytic oxidation method [J]. CIESC Journal, 2023, 74(7): 2919-2925.
[9]	Yuming TU, Gaoyan SHAO, Jianjie CHEN, Feng LIU, Shichao TIAN, Zhiyong ZHOU, Zhongqi REN. Advances in the design, synthesis and application of calcium-based catalysts [J]. CIESC Journal, 2023, 74(7): 2717-2734.
[10]	Yanmei ZHANG, Tao YUAN, Jiang LI, Yajie LIU, Zhanxue SUN. Study on the construction of high-efficient SRB mixed microflora and its performance under acid stress [J]. CIESC Journal, 2023, 74(6): 2599-2610.
[11]	Xueyan WEI, Yong QIAN. Experimental study on the low to medium temperature oxidation characteristics and kinetics of micro-size iron powder [J]. CIESC Journal, 2023, 74(6): 2624-2638.
[12]	Chen WANG, Xiufeng SHI, Xianfeng WU, Fangjia WEI, Haohong ZHANG, Yin CHE, Xu WU. Preparation of Mn₃O₄ catalyst by redox method and study on its catalytic oxidation performance and mechanism of toluene [J]. CIESC Journal, 2023, 74(6): 2447-2457.
[13]	Quanbi ZHANG, Yijin YANG, Xujing GUO. Catalytic degradation of dissolved organic matter in rifampicin pharmaceutical wastewater by Fenton oxidation process [J]. CIESC Journal, 2023, 74(5): 2217-2227.
[14]	Ruikang LI, Yingying HE, Weipeng LU, Yuanyuan WANG, Haodong DING, Yongming LUO. Study on the electrochemical enhanced cobalt-based cathode to activate peroxymonosulfate [J]. CIESC Journal, 2023, 74(5): 2207-2216.
[15]	Xu GUO, Yongzheng ZHANG, Houbing XIA, Na YANG, Zhenzhen ZHU, Jingyao QI. Research progress in the removal of water pollutants by carbon-based materials via electrooxidation [J]. CIESC Journal, 2023, 74(5): 1862-1874.