Effect of Ammonium and Nitrite on Performance of Continuous CANON Reactor
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摘要: 为提高CANON反应器的TN去除效率,采用在好氧条件下直接启动的CANON反应器进行试验.试验过程中,控制温度在35℃±1℃、pH在7.39~8.01、曝气量为31.2 m3/(m3·h)、ρ(DO)约1.5~2.0 mg/L,水力停留时间为3.7 h,分别进行了ρ(NH4+-N)与ρ(NO2--N)的试验.试验发现,在曝气量恒定的条件下,ρ(NH4+-N)过高或过低都不利于TN去除率的提高,在上述试验条件下,当ρ(NH4+-N)为310~360 mg/L时,获得超过75%的TN去除率.提高反应器中的ρ(NH4+-N)与ρ(NO2--N)有利于TN负荷的提高,但二者超过50 mg/L时,继续提高无益.在进水不包含有机碳源的条件下,CANON反应器出水的ρ(TN)依然较高,还需要进一步的处理来满足排放标准.Abstract: To increase the TN (total inorganic nitrogen) removal efficiency,a CANON (completely autotrophic nitrogen-removal over nitrite) reactor,which started directly under aerobic conditions in the laboratory was used.The temperature was controlled at 35 ℃±1 ℃,aeration rate was 31.2 m3/(m3·h),dissolved oxygen was about 1.5-2.0 mg/L,hydraulic retention time was 3.7 h respectively.Tests of ammonium and nitrite concentration on performance of CANON reactor were conducted.It is found that when the aeration rate is kept stable,it is not suitable to obtain high TN removal rate when the ammonium concentration is too high or too low.When the ammonium concentration is about 310-360 mg/L,a TN removal rate of more than 75% is gained under the above-mentioned conditions.Increasing the concentration of ammonium and nitrite in the reactor is beneficial to improve the TN removal load until both concentrations of ammonium and nitrite is more than 50 mg/L.When the CANON reactor is used to treat ammonium-rich wastewater without any organic carbon,the TN concentration in effluent is still high,and a further step is necessary to meet discharge standards.
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Keywords:
- ammonium-rich wastewater /
- nitrite /
- CANON /
- anammox
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[1] THIRD K A,SLIEKERS A O,KUENEN J G,et al.The CANON system(completely autotrophic nitrogen-removal overnitrite)under ammonium limitation:interaction and competition between three groups of bacteria[J].Systematic and AppliedMicrobiology,2001,24(4):588-596.
[2] STROUS M,HEIJNEN J J,KUENEN J G,et al.The sequencing batch reactor as a powerful tool for the study of slowlygrowing anaerobic ammonium-oxidizing microorganisms[J].Applied Microbiology and Biotechnology,1998,50(5):589-596.
[3] SLIEKERS A O,DERWORTN,GOMEZ J,et al.Completely autotrophic nitrogen removal over nitrite in one single reactor[J].Water Research,2002,36(10):2475-2482.
[4] STROUS M,FUERSTJ A,KRAMER E,et al.Missing lithotroph identified as new planctomycete[J].Nature,1999,400(6743):446-449.
[5] SLIEKERS A O,THIRD K A,ABMAW,et al.CANONand Anammox in a gas-lift reactor[J].FEMS Microbiology Letters,2003,218(2):339-344.
[6] QIAO S,KAWAKUBO Y,CHENG Y J,et al.Anammox process for synthetic and practical wastewater treatment using anovel kind of biomass carriers[J].Water Science and Technology,2008,58(6):1335-1341.
[7] V ZQUEZ-PAD N J R,POZO MJ,JARPAM,et al.Treatment of anaerobic sludge digester effluents by the CANONprocessin an air pulsing SBR[J].Journal of Hazardous Materials,2009,166(1):336-341.
[8] 付昆明,张杰,曹相生,等.好氧条件下CANON工艺的启动研究[J].环境科学,2009,30(6):1689-1694.FU Kun-ming,ZHANG JIe,CAO Xiang-sheng,et al.Study of CANON process start-up under aerobic conditions[J].Environmental Science,2009,30(6):1689-1694.(in Chinese) [9] 国家环保总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:271-281. [10] 中华人民共和国卫生部.GB/T5750.5—2006.生活饮用水标准检验方法———无机非金属指标[S].北京:中国标准出版社,2006:20-21. [11] ZHANG L,ZHENG P,TANG C J,et al.Anaerobic ammonium oxidation for treatment of ammonium-rich wastewaters[J].Journal of Zhejiang University-Science B,2008,9(5):416-426.
[12] DAPENA-MORA A,FERNANDEZ I,CAMPOS J L,et al.Evaluation of activity and inhibition effects on Anammox processby batch tests based on the nitrogen gas production[J].Enzyme and Microbial Technology,2007,40(4):859-865.
[13] ISAKA K,SUMINO T,TSUNEDA S.High nitrogen removal performance at moderately low temperature utilizing anaerobicammonium oxidation reactions[J].Journal of Bioscience and Bioengineering,2007,103(5):486-490.
[14] ANTHONISEN A C,LOEHR 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.
[15] STROUS M,KUENEN J G,JETTEN M.Key physiology of anaerobic ammonium oxidation[J].Applied and EnvironmentalMicrobiology,1999,65(7):3248-3250.
[16] 金仁村,郑平,唐崇俭.厌氧氨氧化固定床反应器脱氮性能和过程动力学特性[J].化工学报,2008,59(10):2518-2525.JIN Ren-cun,ZHENG Ping,TANG Chong-jian.Performance and process kinetics characteristics of ANAMMOX fixed-bedreactor[J].Journal of Chemical Industry and Engineering(China),2008,59(10):2518-2525.(in Chinese) [17] FURUKAWA K,LIEU P K,TOKITOH H,et al.Development of single-stage nitrogen removal using anammox and partialnitritation(SNAP)and its treatment performances[J].Water Science and Technology,2006,53(6):83-90.
[18] THIRD K A,PAXMAN J,SCHMID M,et al.Treatment of nitrogen-rich wastewater using partial nitrification and Anammoxin the CANON process[J].Water Science and Technology,2005,52(4):47-54.
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