基于复合铁碳材料的好氧颗粒污泥培养及脱氮研究
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摘要
通过投加复合铁碳材料,经过70 d,在序批式活性污泥反应器(SBR)内培养出粒径为0. 5～4 mm、具有良好脱氮效果的成熟好氧颗粒污泥。在此过程中复合铁碳材料在提高污泥沉降性、加快颗粒化进程、提高脱氮效率等方面发挥了积极的作用。成熟好氧颗粒污泥的脱氮性能会受到pH值、DO浓度、C/N值的影响,最佳pH值为7. 0、DO为(2. 0±0. 1) mg/L、C/N值为8,相应的NH_4~+-N去除率分别为95. 60%、95. 78%、97. 87%,TN去除率分别为93. 64%、94. 28%、96. 28%。
Mature aerobic granular sludge,with particle sizes of 0. 5-4 mm and good denitrification efficiency,was cultivated in a sequencing batch activated sludge reactor( SBR) with the addition of iron-carbon composites. The iron-carbon composites contributed to sludge settling,granulation process and nitrogen removal efficiency. The denitrification performance of mature aerobic granular sludge was sensitive to p H value,DO concentration and C/N ratio. In the optimized condition when pH value was7. 0,DO was( 2. 0 ± 0. 1) mg/L,and C/N ratio was 8,the NH_4~+-N removal rates were 95. 60%,95. 78%,97. 87%,and TN removal rates were 93. 64%,94. 28% and 96. 28%,respectively.
Mature aerobic granular sludge,with particle sizes of 0. 5-4 mm and good denitrification efficiency,was cultivated in a sequencing batch activated sludge reactor( SBR) with the addition of iron-carbon composites. The iron-carbon composites contributed to sludge settling,granulation process and nitrogen removal efficiency. The denitrification performance of mature aerobic granular sludge was sensitive to p H value,DO concentration and C/N ratio. In the optimized condition when pH value was7. 0,DO was( 2. 0 ± 0. 1) mg/L,and C/N ratio was 8,the NH_4~+-N removal rates were 95. 60%,95. 78%,97. 87%,and TN removal rates were 93. 64%,94. 28% and 96. 28%,respectively.
引文
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[19]李小明,谢珊,曾光明,等.好氧微生物颗粒污泥脱氮机理[J].净水技术,2004,23(3):29-31.Li Xiaoming,Xie Shan,Zeng Guangming,et al.The mechanism of nitrogen removal by aerobic granular sludge[J].Water Purification Technology,2004,23(3):29-31(in Chinese).
[20]Shilo M.Lysis of blue-green algae by myxobacter[J].JBacteriol,1970,104(1):453-461.
[21]Liu Y C,Shi H C,Xia L,et al.Study of operational conditions of simultaneous nitrification and denitrification in a Carrousel oxidation ditch for domestic wastewater treatment[J].Bioresour Technol,2010,101(3):901-906.
[2]于鲁冀,何青,王震.好氧颗粒污泥的培养及处理味精废水[J].环境工程学报,2012,6(6):1929-1935.Yu Luji,He Qing,Wang Zhen.Cultivation of aerobic granule sludge and its application in treatment of monosodium glutamate wastewater[J].Chinese Journal of Environmental Engineering,2012,6(6):1929-1935(in Chinese).
[3]王硕,于水利,徐巧,等.好氧颗粒污泥特性、应用及形成机理研究进展[J].应用与环境生物学报,2014,20(4):732-742.Wang Shuo,Yu Shuili,Xu Qiao,et al.Characteristics,application and formation mechanisms of aerobic granular sludge:recent advances[J].Chinese Journal of Applied and Environmental Biology,2014,20(4):732-742(in Chinese).
[4]高景峰,吴桂霞,苏凯,等.处理垃圾渗滤液好氧颗粒污泥的培养及其脱氮特性[J].安全与环境学报,2015,15(5):244-250.Gao Jingfeng,Wu Guixia,Su Kai,et al.Cultivation of the aerobic granular sludge and denitrogenation of the landfill leachate[J].Journal of Safety and Environment,2015,15(5):244-250(in Chinese).
[5]姚力,信欣,鲁航,等.连续流态下以实际低基质生活污水培养好氧颗粒污泥及其脱氮性能[J].环境科学,2015,36(7):2626-2632.Yao Li,Xin Xin,Lu Hang,et al.Cultivation of aerobic granular sludge with real low concentration domestic wastewater and its denitrogenation performance under the continuous flow[J].Environmental Science,2015,36(7):2626-2632(in Chinese).
[6]李雪,刘苏彤,梁红,等.温度对好氧颗粒污泥处理纤维素乙醇废水脱氮效能的影响[J].环境科学学报,2017,37(4):1436-1443.Li Xue,Liu Sutong,Liang Hong,et al.Effect of temperature on nitrogen removal from cellulosic ethanol wastewater by aerobic granular sludge[J].Acta Scientiae Circumstantiae,2017,37(4):1436-1443(in Chinese).
[7]刘绍根,梅子鲲,谢文明,等.处理城市污水的好氧颗粒污泥培养及形成过程[J].环境科学研究,2010,23(7):918-923.Liu Shaogen,Mei Zikun,Xie Wenming,et al.Cultivation and granulation process of aerobic granular sludge applied to treat municipal wastewater[J].Research of Environmental Sciences,2010,23(7):918-923(in Chinese).
[8]王亚利,刘永军,刘喆,等.聚合氯化铝投加时间对好氧颗粒污泥的形成和胞外聚合物的影响[J].化工进展,2015,34(1):278-284.Wang Yali,Liu Yongjun,Liu Zhe,et al.Influence of poly aluminium chloride dosing time on formation and EPSof aerobic granular sludge[J].Chemical Industry and Engineering Progress,2015,34(1):278-284(in Chinese).
[9]王良杰,湛含辉,孙璨.以脱水污泥为接种污泥促进好氧污泥颗粒化[J].中国环境科学,2016,36(11):3405-3411.Wang Liangjie,Zhan Hanhui,Sun Can.Enhancing aerobic granulation by seeding dewatered sludge[J].China Environmental Science,2016,36(11):3405-3411(in Chinese).
[10]Bindhu B K,Madhu G.Influence of three selection pressures on aerobic granulation in sequencing batch reactor[J].Indian Journal of Chemical Technology,2016,22(5):241-247.
[11]Deng S,Li D,Yang X,et al.Biological denitrification process based on the Fe(0)-carbon micro-electrolysis for simultaneous ammonia and nitrate removal from low organic carbon water under a microaerobic condition[J].Bioresour Technol,2016,219:677-686.
[12]Deng S,Li D,Yang X,et al.Process of nitrogen transformation and microbial community structure in the Fe(0)-carbon-based bio-carrier filled in biological aerated filter[J].Environ Sci Pollut Res Int,2016,23(7):6621-6630.
[13]张琪,李德生,邓时海,等.基于铁碳内电解的物化-生物耦合深度脱氮[J].水处理技术,2016,42(10):92-96,101.Zhang Qi,Li Desheng,Deng Shihai,et al.Advanced nitrogen removal by a physicochemical and biological coupling process based on iron-carbon internal electrolysis[J].Technology of Water Treatment,2016,42(10):92-96,101(in Chinese).
[14]高景峰,张倩,王金惠,等.颗粒活性炭对SBR反应器中好氧颗粒污泥培养的影响研究[J].应用基础与工程科学学报,2012,20(3):345-354.Gao Jingfeng,Zhang Qian,Wang Jinhui,et al.Enhanced aerobic sludge granulation in sequencing batch reactor by granular activated carbon augmentation[J].Journal of Basic Science and Engineering,2012,20(3):345-354(in Chinese).
[15]唐朝春,简美鹏,刘名,等.强化好氧颗粒污泥稳定性的研究进展[J].化工进展,2013,32(4):919-924.Tang Chaochun,Jian Meipeng,Liu Ming,et al.Research advances in aerobic granule stability enhancement[J].Chemical Industry and Engineering Progress,2013,32(4):919-924(in Chinese).
[16]Ni B J,Xie W M,Liu S G,et al.Granulation of activated sludge in a pilot-scale sequencing batch reactor for the treatment of low-strength municipal wastewater[J].Water Res,2009,43(3):751-761.
[17]Gao D,Liu L,Liang H,et al.Comparison of four enhancement strategies for aerobic granulation in sequencing batch reactors[J].J Hazard Mater,2011,186(1):320-327.
[18]郎龙麒,万俊锋,王杰,等.SBAR内不同有机负荷下2种好氧颗粒污泥形成及除磷性能[J].环境工程学报,2015,9(1):51-57.Lang Longqi,Wan Junfeng,Wang Jie,et al.Formation of two typical aerobic granules cultivated in one single SBAR and phosphorus removal performances at different organic loading rates[J].Chinese Journal of Environmental Engineering,2015,9(1):51-57(in Chinese).
[19]李小明,谢珊,曾光明,等.好氧微生物颗粒污泥脱氮机理[J].净水技术,2004,23(3):29-31.Li Xiaoming,Xie Shan,Zeng Guangming,et al.The mechanism of nitrogen removal by aerobic granular sludge[J].Water Purification Technology,2004,23(3):29-31(in Chinese).
[20]Shilo M.Lysis of blue-green algae by myxobacter[J].JBacteriol,1970,104(1):453-461.
[21]Liu Y C,Shi H C,Xia L,et al.Study of operational conditions of simultaneous nitrification and denitrification in a Carrousel oxidation ditch for domestic wastewater treatment[J].Bioresour Technol,2010,101(3):901-906.