Abstract：A novel magnetic activated carbon-based activated sludge process (named by number 1#) was constructed by adding 140mesh of 1.00g/L magnetic activated carbon in a sequential batch activated sludge reactor (SBR) in order to improve nitrogen and phosphorus removal performance in the traditional activated sludge process. At the same time, the traditional activated sludge system without any magnetic material was taken as the control group (named by number 0#). The effects of magnetic activated carbon on the decontamination performance and the microbial structural composition were studied. Meanwhile, the mechanisms of magnetic activated carbon to enhance nitrogen and phosphorus removal were also discussed. The results showed that the average removal efficiency of TN and TP in the 1# was 68.59% and 78.25% respectively. While the average removal efficiency of control group (0#) for TN and TP was 53.17% and 54.10%. The concentration of NO3--N from the 1# decreased by 7.03mg/L on average. However, the removal efficiency of NH4+-N and COD in the 0# and 1# were both above 95.00%. The declining rate of TN, NH4+-N, TP and COD in the 1# was faster than the control group 0#. The efficiency of synchronous nitrification and denitrification in the reactor 0# was 60.31%. The rate of denitrification was 4.44mg/(L·h), and the efficiency of synchronous nitrification and denitrification was 80.74%. The rate of denitrification in the reactor 1# 6.13mg/(L·h). The denitrification efficiency in the reactor 1# was significantly faster than that in the reactor 0#. High-throughput sequencing results indicated that the dominant phylum in the reactor 1# were Saccharibacteria (38.74%), Proteobacteria (22.52%), Actinobacteria (18.54%) and Chloroflexi (8.40%). In addition, compared with the reactor 0#, the relative abundance of microorganisms in Actinobacteria, which is closely related to sludge swelling decreased significantly in the 1#. The relative abundances of micropruina, shinella, norank_f_Anaerolineaceae and norank_f_Xanthomonadaceae, which are related to nitrogen and phosphorus removal bacteria population, were significantly higher than the control group. Adding a certain amount of magnetic activated carbon in the SBR system could not only inhibit the growth of microorganisms that caused sludge expansion, but also facilitate the enrichment of microorganisms for nitrogen and phosphorus removal. The 1# showed the good stability and nitrogen and phosphorus removal performance.
杨豪, 信欣, 曹惜霜, 文茜, 张馨予, 彭琦, 鄂荻. 磁性活性炭强化SBR脱氮除磷及微生物种群分析[J]. 中国环境科学, 2021, 41(3): 1199-1207.
YANG Hao, XIN Xin, CAO Xi-shuang, WEN Qian, ZHANG Xin-yu, PENG Qi, E Di. Analysis of SBR loaded magnetic activated carbon for enhanced nitrogen and phosphorus removal and its microbial population. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(3): 1199-1207.
Zhang W J. Study on the Combined process of aerobic granular sludge SBR and MBR to treat urban domestic sewage[D]. Harbin:Harbin Institute of Technology, 2018.
[2]
Chang Z, Sun N, Jiang R. Study on activated carbon promoting Sulfide promoting short-course nitrification and denitrification sludge Granulation[J]. Environmental Engineering, 2019,37(8):12-15,26.
[3]
冯显露,刘新颖,孙德智,等.投加颗粒活性炭强化餐厨垃圾的厌氧处理[J]. 中国环境科学, 2018,38(4):1324-1328. Feng X L, Liu X Y, Sun D Z, et al. Granular activated carbon was added to enhance the anaerobic treatment of kitchen waste[J]. China Environmental Science, 2018,38(4):1324-1328.
[4]
潘怡然,崔康平,张硕,等.颗粒活性炭促进高温厌氧消化的研究[J]. 中国环境科学, 2018,38(4):1324-1328. Pan Y R, Cui K P, Zhang S, et al. Study on the Promotion of high temperature anaerobic digestion by granular activated carbon[J]. China Environmental Science, 2018,38(4):1324-1328.
[5]
Sakai Y, Tani K, Takahashi F. Sewage treatment under conditions of balancing microbial growth and cell decay with a high concentration of activated sludge supplemented with ferromagnetic powder[J]. Journal of Fermentation and Bioengineering, 1992,74(6):413-417.
[6]
Nakamura K, Okuno K, Ano T, et al. Effect of high magnetic field on the growth of Bacillus sutbitlis measured in a newly developed super conduction magnet biosystem[J]. Bioelectro chemistry and Bioenergetics, 1997,43(1):123-128.
[7]
Yan A, Jiang C, Xiu F W, et al. phenol degradation catalyzed by magnetically immobilized Tyrosinase[A], Proceedings of 5th INWFPPC & 3rd ISETPP[C]. Guangzhou:South China University of Technology, 2006.
[8]
Yavuz H, Celebi S S. A typical application of magnetic field in wastewater treatment with fiuidized bed biofilm reactor[J]. Chemical Engineering Communications, 2003,190(5-8):599-609.
[9]
Marcin S, Tomasz K, Lidia W. Determination of permanent, electromagnetic field influence on sewage sludges conditioning[J]. Environmental Protection Engineering, 2002,2(1):49-53.
[10]
赵秋燕,胡丽丽.磁化活性污泥法耦合MBR处理印染废水的研究[J]. 长春工程学院学报(自然科学版) 2019,20(2):40-43. Zhao Q Y, Hu L L. Study on the treatment of dyeing wastewater by magnetizing activated sludge coupled with MBR[J]. Journal of Changchun Institute of Engineering (Natural Science edition), 2019, 20(2):40-43.
[11]
Chen J L, Xu S H, Xu Y B, et al. Deep Treatment of electroplating wastewater by magnetic powder-Weak magnetic field coupled activated sludge system[J]. Electroplating and finishing, 2017,39(12):41-46.
[12]
Pi K W. Study on application of magnetic effect in water treatment[J]. Environmental science and technology, 2003,S1(26):79-81.
[13]
Wu J. Study on preparation of ferric activated carbon and adsorption of dye wastewater[D]. Kunming:Kunming University of Science and Technology, 2014.
[14]
郭丽燕,马伟,扈振友,等.赋磁活性炭粉去除饮用水中的有机物[J]. 中国给水排水, 2001,17(2):71-72. Guo L Y, Ma W, Fu Z Y, et al. Removal of organic matter from drinking water by magnetic activated carbon powder[J]. China Water Wastewater, 2001,17(2):71-72.
[15]
Huang H M. Preparation of ferric activated carbon and adsorption of refractory organic matter in water[D]. Tianjin:Tianjin Urban Architecture College, 2012.
[16]
Shahamat Y D, Farzadkia M, Nasseri S, et al. Magnetic heterogeneous catalytic ozonation:a new removal method for phenol in industrial wastewater[J]. Journal of Environmental Health Science and Engineering, 2014,12(1):50.
[17]
国家环境保护总局.水和废水监测分析方法[M]. 北京:中国环境科学出版社, 2002. State Environmental Protection Administration. Methods for monitoring and analysis of water and wastewater[M]. Beijing:China Environmental Science Press, 2002.
[18]
刘植昌,凌立成,吕春祥,等.铁催化活化制备沥青基球状活性炭中孔形成的机理研究[J]. 燃料化学学报, 2000,28(4):320-323. Liu Z C, Ling L C, Lv C X, et al. Mechanism of mesopore formation in preparation of asphalt-based spherical activated carbon by iron catalytic activatio[J]. Journal of Fuel Chemistry, 2000,28(4):320-323.
[19]
Ida T, Kugimiya M, Takahashi R, et al. Phylogenetic relationships among ammonia-oxidizing bacteria as revealed by gene sequences of glyceraldehyde 3-phosphate dehydrogenase and phosphoglycerate kinase[J]. Journal of Bioscience and Bioengineering, 2005,99(6):569-576.
[20]
Regina N, Luís F M. Competition between Nitrospira spp. and Nitrobacter spp. in nitrite-oxidizing bioreactors[J]. Biotechnology & Bioengineering, 2006,95(1):169-175.
[21]
Marin B, Nowack E C, Glöckner G, et al. The ancestor of the Paulinella chromatophore obtained a carboxysomal operon by horizontal gene transfer from a Nitrococcus-like γ-proteobacterium-1[J]. Bmc Evolutionary Biology, 2007,7(1):85.
[22]
尚越飞,王申,宗倪,等.污水生物处理工艺低温下微生物种群结构[J]. 环境科学, 2020,41(10):4637-4643. Shang Y F, Wang S, Zong N, et al. Microbial population structure of wastewater biological treatment process at low temperature[J]. Environmental Science, 2020,41(10):4637-4643.
[23]
Gao C D, Zhang N, Han W, et al. Microbial diversity of filamentous sludge at low temperature[J]. Environmental Science, 2020,41(7):3373-3383.
[24]
秦嘉伟,信欣,鲁航,等.连续流SNAD工艺处理猪场沼液启动过程中微生物种群演变及脱氮性能[J]. 环境科学, 2020,41(5):2349-2357. Qin J W, Xin X, Lu H, et al. Microbial population evolution and denitrification performance of biogas slurry from pig farms treated by continuous flow SNAD process[J]. Environmental Science, 2020, 41(5):2349-2357.
[25]
Zhang Y, Sun Q, Zhou J, et al. Reduction in toxicity of wastewater from three wastewater treatment plants to alga (Scenedesmus obliquus) in northeast China[J]. Ecotoxicology and Environmental Safety, 2015,119:132-139.
[26]
Domaradzka D, Guzik U, Wojcieszyńska D. Biodegradation and biotransformation of polycyclic non-steroidal anti-inflammatory drugs[J]. Reviews in Environmental Science and Bio/Technology, 2015,14(2):229-239.
[27]
Li J T, Ji S L, Liu Z P, et al. The bacterial composition of aerobic granular sludge was analyzed by 16S rDNA clone library method[J]. Environmental Science Research, 2009,22(10):1218-1223.
[28]
潘丹,黄巧云,陈雯莉.两株异养硝化细菌的分离鉴定及其脱氮特性[J]. 微生物学报, 2011,51(10):1382-1389. Pan D, Huang Q Y, Chen W L. Screening and identification of two heterotrophic nitrifying bacteria and characterizotion of their capacity for nitrogen removal[J]. Acta Microbiologica Sinica, 2011,51(10):1382-1389.
[29]
Wang J, Qi R, Liu M M, et al. The potential role of ‘Candidatus Microthrix parvicella’ in phosphorus removal duringsludge bulking in two full-scale enhanced biological phosphorus removal plants[J]. Water Science & Technology, 2014,70(2):367-375.
[30]
信欣,管蕾,郭俊元,等.SBR加载不同粒径磁性活性炭对其污泥颗粒化进程的影响机制[J]. 环境科学, 2017,38(11):4679-4686. Xin X, Guan L, Guo J Y, et al. Influence mechanism of magnetic activated carbon with different particle size on sludge granulation process of SBR[J]. Environmental Science, 2017,38(11):4679-4686.
[31]
陈燕,刘国华,范强,等.活性污泥法中细菌多样性综述[J]. 环境保护科学, 2015,41(4):70-78. Chen Y, Liu G H, Fan Q, et al. A review of bacterial diversity in activated sludge process[J]. Environmental Protection Science, 2015, 41(4):70-78.
[32]
Yavuz H, Celebi S S. Effects of magnetic field on activityof Activated sludge in wastewater treatment[J]. Enzyme and Mi-crobial Technology, 2000,26(1):22-27.
[33]
Li L H, Zhui W S. Experimental study on the Effect of magnetic treatment on COD in organic wastewater[J]. Journal of Wuhan University, 2004,37(6):51-54.
[34]
Zhao X, Wang R, Cao R Y, et al. Study on the application of high intensity magnetic technology to algae killing in landscape water body[J]. Water Purification Technology, 2006,25(1):55-57,71.
