多级流化床-曝气生物滤池中试处理高氨氮废水
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摘要
采用多级流化床-曝气生物滤池组合工艺,以高氨氮工业废水为处理对象,研究了中试系统的启动方法、稳定运行阶段对污染物的去除效能及与传统活性污泥法相比的优势。结果表明:采用控制进水流量和逐步增加进水负荷的运行方法,历时近50 d,可实现中试系统的启动;启动阶段,系统对COD和NH_4~+-N的平均去除率分别为68.74%和97.92%,出水COD和NH_4~+-N的质量浓度平均分别为176.35 mg·L~(-1)和13.52 mg·L~(-1);稳定运行阶段,系统在进水流量为2.0 m~3?d~(-1)的工况下,对COD和NH_4~+-N的平均去除率分别为92.66%和99.32%,出水COD和NH_4~+-N的质量浓度平均分别为152.24 mg·L~(-1)和1.32 mg·L~(-1),其中,出水的NH_4~+-N可以稳定达到地表水IV类水标准。与传统活性污泥法工艺相比较,该中试系统可以实现对COD的去除率从85.37%增加到92.66%,对NH_4~+-N的去除率从72.53%增加到99.32%。
The combination pilot process of multi-stage fluidized bed-biological aerated filter was used to treat high-strength ammonia-nitrogen industrial wastewater.The start-up method of this pilot system and pollutants removal efficiency during its stable operation stage were studied,and its superiority over traditional activated sludge processes were also determined.The results showed that the start-up of this pilot system could be accomplished within about 50 d through controlling the flow rate and gradually elevating the inflow load.At the start-up stage,the removal efficiencies of COD and NH_4~+-N were 68.74%and 97.92%,respectively.The COD and NH_4~+-N concentrations in effluent were 176.35 mg·L~(-1) and 13.52 mg·L~(-1),respectively.At the stable stage with the flow rate of 2.0 m~3·d~(-1),the average removal efficiencies of COD and NH_4~+-N were 92.66%and 99.32%,respectively,and the average COD and NH_4~+-N concentrations in effluent were 152.24 mg·L~(-1) and 1.32 mg·L~(-1),respectively.Of which the NH_4~+-N concentration in effluent could meet the requirement of class IV water standard for surface water.Compared with the traditional activated sludge process,the pilot system of multi-stage fluidized bed-biological aerated filter could improve the COD and NH_4~+-N removal efficiencies from 85.37% to92.66% and from 72.53% to 99.32%,respectively.
The combination pilot process of multi-stage fluidized bed-biological aerated filter was used to treat high-strength ammonia-nitrogen industrial wastewater.The start-up method of this pilot system and pollutants removal efficiency during its stable operation stage were studied,and its superiority over traditional activated sludge processes were also determined.The results showed that the start-up of this pilot system could be accomplished within about 50 d through controlling the flow rate and gradually elevating the inflow load.At the start-up stage,the removal efficiencies of COD and NH_4~+-N were 68.74%and 97.92%,respectively.The COD and NH_4~+-N concentrations in effluent were 176.35 mg·L~(-1) and 13.52 mg·L~(-1),respectively.At the stable stage with the flow rate of 2.0 m~3·d~(-1),the average removal efficiencies of COD and NH_4~+-N were 92.66%and 99.32%,respectively,and the average COD and NH_4~+-N concentrations in effluent were 152.24 mg·L~(-1) and 1.32 mg·L~(-1),respectively.Of which the NH_4~+-N concentration in effluent could meet the requirement of class IV water standard for surface water.Compared with the traditional activated sludge process,the pilot system of multi-stage fluidized bed-biological aerated filter could improve the COD and NH_4~+-N removal efficiencies from 85.37% to92.66% and from 72.53% to 99.32%,respectively.
引文
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[3]刘亚敏,郝卓莉.高氨氮废水处理技术及研究现状分析[J].水处理技术,2014,3(5):7-11.
[4]WEN X,GONG B Z,ZHOU J,et al.Efficient simultaneous partial nitrification,anammox and denitrification(SNAD)system equipped with a real-time dissolved oxygen(DO)intelligent control system and microbial community shifts of different substrate concentrations[J].Water Research,2017,119:201-211.
[5]郝火凡,胡晓明.高氮垃圾渗滤液SBBR生物脱氮工艺特性研究[J].水处理技术,2013,35(9):48-51.
[6]于跃,李渊博.A2O氧化沟-混凝沉淀-反硝化深床滤池工艺在大型经开区污水处理中的应用[J].工业用水与废水,2016,47(3):3-5.
[7]郑彭生,吴雪茜,周如禄,等.处理高氨氮废水亚硝化细菌培养实验研究[J].水处理技术,2018,44(2):60-62.
[8]刘平,王晓,刘春.微气泡曝气生物流化床反应器SNAD过程脱氮性能研究[J].水处理技术,2018,44(5):113-118.
[9]KERMANSHAHI A,KARAMANEV D,MARGARITIS A.Biodegradation of petroleum hydrocarbons in an immobilized cell airlift bioreactor[J].Water Research,2015,39(15):3704-3714.
[10]SARAVANAN P,PAKSHIRAJAN K,SAHA P.Biodegradation of phenol and m-cresol in a batch and fed batch operated internal loop airlift bioreactor by indigenous mixed microbial culture predominantly pseudomonas[J].Bioresource Technology,2014,99(18):8553-8558.
[11]吴锦华,李平,谭展机,等.三相生物流化床处理苯胺废水的硝化特性研究[J].水处理技术,2015,33(9):30-33.
[12]DENG L J,GUO W S,NGO H H.New functional biocarriers for enhancing the performance of a hybrid moving bed biofilm reactor-membrane bioreactor system[J].Bioresource Technology,2016,208:87-93.
[13]KRITHIKA D,PHILIPI P.Treatment of wastewater from water based paint industries using submerged attached growth reactor[J].Bioresource Technology,2016,93(16):8467-8471.
[14]BASSIN J P,DIAS I N,CAO S M S,et al.Effect of increasing organic loading rates on the performance of moving-bed biofilm reactors filled with different support media:Assessing the activity of suspended and attached biomass fractions[J].Process Safety and Environmental Protection,2016,100:131-141.
[15]何岩,周恭明,赵由才,等.亚硝酸型硝化-厌氧氨氧化联合工艺处理“中老龄”垃圾渗滤液[J].给水排水,2016,32(10):43-46.
[16]ZHANG L,LIU J L,LIU C.Performance of a fixed-bed biofilm reactor with microbubble aeration in aerobic wastewater treatment[J].Water Science and Technology,2016,74(1):138-146.
[17]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.