A/SMBBR工艺处理高氨氮戊二胺废水
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摘要
采用A/SMBBR工艺进行中试实验,探究该工艺处理高氨氮DN5废水的可行性,反应器进水分别为DN5废水与预处理过的D)废水混合(I阶段)和单一DN5废水(Ⅱ阶段)。结果表明,第I阶段进水氨氮质量浓度由50mg/L提升到450 mg/L,尽管进水中COD和氨氮波动幅度大,但A/SMBBR工艺对污水中COD和氨氮的平均去除率可达到96.23%和97.03%,其中氨氮的平均出水质量浓度为3.56 mg/L,此阶段A/SMBBR工艺表现出极强的抗氨氮冲击负荷能力和系统破坏后较快的恢复能力,而氨氮冲击负荷严重影响总磷的去除效果。第II阶段在系统总停留时间5.2 d,DO质量浓度为(3.5±0.5)mg/L,上清液回流比为200%的操作条件下,A/SMBBR工艺可稳定处理氨氮质量浓度550 mg/L左右的DN5废水,出水COD保持在(60±10)mg/L,氨氮质量浓度在(2±1.5)mg/L,出水水质满足GB 5084-2005。
A combined pilot-scale A/SMBBR process was used for high ammonia nitrogen DN5 wastewater treatment, and the feasibility was investigated. The A/SMBBR biofilm reactor was fed with effluent which were DC wastewater and DN5 wastewater mixture(phase I) and DN5wastewater(phase II). Results showed that, the ammonia nitrogen concentration of influent in phase I enhanced from 50 mg/L to 450 mg/L through three phases(150,250,350 mg/L). The fluctuations of COD and ammonia nitrogen of influent were large, but the average removal rate of COD and ammonia nitrogen which was treated by A/SMBBR process in the effluent were 96.23% and 97.03%. The average concentration of ammonia nitrogen in the effluent was 3.56 mg/L. A/SMBBR showed high resistance to impact loading and faster recovery after the destruction of system. However ammonia nitrogen impact load had great effect on TP removing. Under the conditions of reaction HRT was 5.2 d, DO was(3.5±0.5) mg/L, Reflux ratio was 200%,the influent concentration of ammonia nitrogen was 550 mg/L at phase II, COD and ammonia nitrogen removal efficiencies were momentary reduced,concentrations kept steadily(60±10) mg/L and(2±1.5) mg/L. The effluent water quality met the integrated "farmland irrigation water quality standard"(GB 5084-2005).
A combined pilot-scale A/SMBBR process was used for high ammonia nitrogen DN5 wastewater treatment, and the feasibility was investigated. The A/SMBBR biofilm reactor was fed with effluent which were DC wastewater and DN5 wastewater mixture(phase I) and DN5wastewater(phase II). Results showed that, the ammonia nitrogen concentration of influent in phase I enhanced from 50 mg/L to 450 mg/L through three phases(150,250,350 mg/L). The fluctuations of COD and ammonia nitrogen of influent were large, but the average removal rate of COD and ammonia nitrogen which was treated by A/SMBBR process in the effluent were 96.23% and 97.03%. The average concentration of ammonia nitrogen in the effluent was 3.56 mg/L. A/SMBBR showed high resistance to impact loading and faster recovery after the destruction of system. However ammonia nitrogen impact load had great effect on TP removing. Under the conditions of reaction HRT was 5.2 d, DO was(3.5±0.5) mg/L, Reflux ratio was 200%,the influent concentration of ammonia nitrogen was 550 mg/L at phase II, COD and ammonia nitrogen removal efficiencies were momentary reduced,concentrations kept steadily(60±10) mg/L and(2±1.5) mg/L. The effluent water quality met the integrated "farmland irrigation water quality standard"(GB 5084-2005).
引文
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[13]沈雁群,胡安辉,杨岳平.MBBR处理低C/N生活污水影响因素研究[J].浙江大学学报(理学版),2011(06):671-676.
[14]MASIC A,BENGTSSON J,Christensson M.Measuring and modeling the oxygen profile in a nitrifying moving bed bio-film reactor[J].Mathematical Biosciences,2010,227(1):1-11.
[15]王社平,邵军峰,万琼,等.A2/O工艺中二沉池污泥上浮的原因与对策[J].中国给水排水,2010(13):43-45.
[16]彭赵旭,彭永臻,桂丽娟,等.氨氮冲击负荷对硝化过程的短期影响[J].中国给水排水,2010(11):9-12.
[17]赵建邦,袁辉洲,柯水洲.厌氧MBBR处理生活污水的特性研究[J].工业用水与废水,2011,42(3):35-39,99
[2]VADIVELU V M,KELLER J,YUAN Z G.Effect of free ammonia and free nitrous acid concentration on the anabolic and catabolic processes of an enriched Nitrosomonas culture[J].Biotechnol Bioeng,2006,95(5):830-839.
[3]崔树军,谷立坤,张建云,等.高氨氮废水的处理技术及研究应用现状[J].中国给水排水,2010(14):26-29.
[4]刘亚敏,郝卓莉.高氨氮废水处理技术及研究现状[J].水处理技术,2012(S1):7-11.
[5]黄军,邵永康.高效吹脱法+折点氯化法处理高氨氮废水[J].水处理技术,2013(08):131-133.
[6]李晓婷.高氨氮皮草皮革废水处理的应用研究[J].水处理技术,2013(10):132-135.
[7]中丹康灵(北京)生物技术有限公司.生物膜填料:201330132291.6[P].2013-12-04.
[8]张楠,初里冰,丁鹏元,等.A/O生物膜法强化处理石化废水及生物膜种群结构研究[J].中国环境科学,2015,35(1):80-86.
[9]王学江,夏四清,陈玲,等.DO对MBBR同步硝化反硝化生物脱氮影响研究[J].同济大学学报(自然科学版),2006(04):514-517.
[10]黎永坚,胡晓东,熊紫娟,等.高浓度氨氮对SBR工艺处理制药废水的影响[J].中国给水排水,2009(13):92-94.
[11]徐云侠,张耀斌,全燮,等.MBBR与A/O法对污水中有机物及氮处理效果的研究[J].环境工程学报,2007,1(7):19-23.
[12]汪传新,王广华,隋军.改良MBR处理高氨氮生活污水及回用的中试研究[J].中国给水排水,2009(01):60-63.
[13]沈雁群,胡安辉,杨岳平.MBBR处理低C/N生活污水影响因素研究[J].浙江大学学报(理学版),2011(06):671-676.
[14]MASIC A,BENGTSSON J,Christensson M.Measuring and modeling the oxygen profile in a nitrifying moving bed bio-film reactor[J].Mathematical Biosciences,2010,227(1):1-11.
[15]王社平,邵军峰,万琼,等.A2/O工艺中二沉池污泥上浮的原因与对策[J].中国给水排水,2010(13):43-45.
[16]彭赵旭,彭永臻,桂丽娟,等.氨氮冲击负荷对硝化过程的短期影响[J].中国给水排水,2010(11):9-12.
[17]赵建邦,袁辉洲,柯水洲.厌氧MBBR处理生活污水的特性研究[J].工业用水与废水,2011,42(3):35-39,99