亚硝酸盐对生物膜CANON工艺脱氮性能和N_2O释放的影响
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摘要
通过调控进水NO_2~--N浓度分别为0、25、50和100 mg·L~(-1),研究不同初始NO_2~--N浓度对CANON工艺脱氮效果和N_2O释放的影响。结果表明:SBBR中,初始NO_2~--N浓度分别为0、25、50和100 mg·L~(-1)时,TN去除率分别达到81.65%、89.09%,87.75%和88.39%;对应的N_2O释放率分别为7.03%、7.93%、10.21%和11.94%;前1/2周期内N_2O释放量分别占总释放量的46%、53%、68%和75%。通过分析可知,较高初始NO_2~--N浓度,可以增加TN去除率,但是会刺激CANON工艺中N_2O释放量的增加。
The effects of different initial NO_2~--N concentrations on nitrogen removal and N_2O release of CANON process were studied by controlling the influent NO_2~--N concentrations which were 0, 25, 50 and 100 mg·L~(-1),respectively. The results indicated that when the initial NO_2~--N concentrations were 0, 25, 50 and 100 mg·L~(-1), the total nitrogen removal efficiencies were 81.65%, 89.09%, 87.75% and 88.39%, respectively. The N_2O emission rates were 7.03%, 7.93%, 10.21% and 11.94%, respectively. The N_2O emissions in the first 1/2 experimental period were46%, 53%, 68% and 75%, respectively. Through analysis, the higher initial NO_2~--N concentrations could increase TN removal rate, but stimulate the increase of N_2O emissions in the CANON process.
The effects of different initial NO_2~--N concentrations on nitrogen removal and N_2O release of CANON process were studied by controlling the influent NO_2~--N concentrations which were 0, 25, 50 and 100 mg·L~(-1),respectively. The results indicated that when the initial NO_2~--N concentrations were 0, 25, 50 and 100 mg·L~(-1), the total nitrogen removal efficiencies were 81.65%, 89.09%, 87.75% and 88.39%, respectively. The N_2O emission rates were 7.03%, 7.93%, 10.21% and 11.94%, respectively. The N_2O emissions in the first 1/2 experimental period were46%, 53%, 68% and 75%, respectively. Through analysis, the higher initial NO_2~--N concentrations could increase TN removal rate, but stimulate the increase of N_2O emissions in the CANON process.
引文
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[19]付昆明,张杰,曹相生,等.改性聚乙烯填料CANON反应器的启动与运行[J].化工学报,2014,65(11):4406-4412.
[20] XIAO P Y, CAI Q, ZHANG D J, et al. Characteristics of nitrogen removal and nitrous oxide production in CANON process[J].Journal of Chemical Technology&Biotechnology,2014,89(4):552-558. DOI:10.1002/jctb.4153.
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[23] ZHOU Y, PIJUAN M, ZENG R J, et al. Free nitrous acid inhibition on nitrous oxide reduction by a denitrifying-enhanced biological phosphorus removal sludge[J]. Environmental Science&Technology,2008,42(22):8260-8265. DOI:10.1021/es800650j.
[24] YUE J, WANG D, ZHANG W. Effects of substrates on N2O emissions in an anaerobic ammonium oxidation(anammox)reactor[J].Springerplus,2016,5(1):741-752. DOI:10.1186/s40064-016-2392-1.
[2] LIANG Z, LIU J X. Landfill leachate treatment with a novel process:Anaerobic ammonium oxidation(anammox)combined with soil infiltration system[J]. Journal of Hazardous Materials,2008,151(1):202-212. DOI:10.1016/j.jhazmat.2007.05.068.
[3] JOSS A, SALAGEBER D, EUGSTER J, et al. Full-scale nitrogen removal from digester liquid with partial nitritation and anammox in one SBR[J]. Environmental Science&Technology,2009,43(14):5301-5306. DOI:10.1021/es900107w.
[4] OKABE S, OSHIKI M, TAKAHASHI Y, et al. N2O emission from a partial nitrification-anammox process and identification of a key biological process of N2O emission from anammox granules[J]. Water Research,2011,45(19):6461-6470. DOI:10.1016/j.watres.2011.09.040.
[5]王长科,罗新正,张华.全球增温潜势和全球温变潜势对主要国家温室气体排放贡献估算的差异[J].气候变化研究进展,2013,9(1):49-54.
[6] PALUTIKOF B B Z K. Climate change and water. Technical paper of the intergovernmental panel on climate change, IPCC Secretariat[R].Geneva,2008.
[7] KIM S W, MIYAHARA M, FUSHINOBU S, et al. Nitrous oxide emission from nitrifying activated sludge dependent on denitrification by ammonia-oxidizing bacteria[J]. Bioresource Technology,2010,101(11):3958-3963. DOI:10.1016/j.biortech.2010.01.030.
[8] POTH M, FOCHT D D. 15N kinetic analysis of N2O production by nitrosomonas europaea:An examination of nitrifier denitrification[J]. Applied&Environmental Microbiology,1985,49(5):1134-1141.
[9] JIA W, LIANG S, ZHANG J, et al. Nitrous oxide emission in low-oxygen simultaneous nitrification and denitrification process:Sources and mechanisms[J]. Bioresource Technology,2013,136(3):444-451. DOI:10.1016/j.biortech.2013.02.117.
[10] ZHOU Y, OEHMEN A, LIM M, et al. The role of nitrite and free nitrous acid(FNA)in wastewater treatment plants[J]. Water Research,2011,45(15):4672-4682. DOI:10.1016/j.watres.2011.06.025.
[11] ALINSAFI A, ADOUANI N, BELINE F, et al. Nitrite effect on nitrous oxide emission from denitrifying activated sludge[J]. Process Biochemistry,2008,43(6):683-689. DOI:10.1016/j.procbio.2008.02.008.
[12]王会芳.全程自养脱氮(CANON)工艺中N2O释放研究[D].北京:北京建筑大学,2016.
[13]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,2002:63-64.
[14] ANTHONISEN A C, LOEH R C, PRAKASAM T B, et al. Inhibition of nitrification by ammonia and nitrous-acid[J]. Journal Water Pollution Control Federation,1976,48(5):835-852. DOI:10.2307/25038971.
[15]付昆明,王会芳,苏雪莹,等.初始p H值对序批式CANON工艺脱氮效果和N2O释放的影响[J].环境科学,2016,37(11):4261-4267. DOI:10.13227/j.hjkx.201604221.
[16]付昆明,张杰,曹相生,等. NH4+-N与NO2--N对连续流CANON反应器运行性能的影响[J].北京工业大学学报,2011,37(7):1038-1044.
[17] ZHANG D, CAI Q, CONG L. Enhancing completely autotrophic nitrogen removal over nitrite by trace NO2 addition to an AUSB reactor[J]. Journal of Chemical Technology&Biotechnology,2010,85(2):204-208. DOI:10.1002/jctb.2288.
[18] ZU B, ZHANG D J, YAN Q. Effect of trace NO2 and kinetic characteristics for anaerobic ammonium oxidation of granular[J].Environmental Science,2008,29(3):683-687.
[19]付昆明,张杰,曹相生,等.改性聚乙烯填料CANON反应器的启动与运行[J].化工学报,2014,65(11):4406-4412.
[20] XIAO P Y, CAI Q, ZHANG D J, et al. Characteristics of nitrogen removal and nitrous oxide production in CANON process[J].Journal of Chemical Technology&Biotechnology,2014,89(4):552-558. DOI:10.1002/jctb.4153.
[21] SZATKOWSKA B, CEMA G, PLAZA E, et al. A one-stage system with partial nitritation and anammox processes in the moving-bed biofilm reactor[J]. Water Science&Technology,2007,55(8/9):19-26. DOI:10.2166/wst.2007.237.
[22] POTH M. Dinitrogen production from nitrite by a nitrosomonas isolate[J]. Applied&Environmental Microbiology,1986,52(4):957-959.
[23] ZHOU Y, PIJUAN M, ZENG R J, et al. Free nitrous acid inhibition on nitrous oxide reduction by a denitrifying-enhanced biological phosphorus removal sludge[J]. Environmental Science&Technology,2008,42(22):8260-8265. DOI:10.1021/es800650j.
[24] YUE J, WANG D, ZHANG W. Effects of substrates on N2O emissions in an anaerobic ammonium oxidation(anammox)reactor[J].Springerplus,2016,5(1):741-752. DOI:10.1186/s40064-016-2392-1.