UASB-A~2/O-MBR组合工艺处理餐厨废水工程
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摘要
采用上流式厌氧污泥床(UASB)-A~2/O-MBR组合工艺系统进行处理高浓有机餐厨废水工程试验研究,分析了COD、NH_3~-N、TN和TP等污染物在各工艺段的降解过程和机理,以及污染物减量和工艺稳定性。结果表明,系统对4种主要污染物的去除率分别达到了96.8%、96.4%、70%、80%,且系统出水水质良好,达到DB 44/26-2001规定中第二时段三级排放标准,且抗冲击负荷能力强。UASB对于COD的去除率贡献最大,为94.33%;A~2/O-MBR系统对NH_4~+-N、TN和TP的去除率贡献最大,分别为76.23%、77.22%和58.05%。系统抗污染物负荷冲击能力依次为COD>NH_4~+-N>TP>TN。
Upflow anaerobic sludge blanket(UASB) reactor combined with A~2/O-membrane bioreactor(A~2/O-MBR) system was employed to treat high strength organic restaurant wastewater. The degradation process and mechanism of COD, NH_4~+-N, TN and TP in each process stage, pollutant decrement and process stability were analyzed. The results showed that, the removal rate of COD, NH_4~+-N, TN and TP reached 96.8%, 96.4%, 70% and 80% respectively,the quality of system effluent was good which reached the three level discharge standard of the second period of DB 44/26-2001, and had good resistance to impact load. UASB contributed to 94.33% of COD removal and A~2/O-MBR system contributed to 76.23%, 77.22% and 58.05% of NH_4~+-N, TN and TP removal respectively. In terms of stability of combined system, the resistance to shock load of different pollutants were COD>NH_4~+-N>TP>TN.
Upflow anaerobic sludge blanket(UASB) reactor combined with A~2/O-membrane bioreactor(A~2/O-MBR) system was employed to treat high strength organic restaurant wastewater. The degradation process and mechanism of COD, NH_4~+-N, TN and TP in each process stage, pollutant decrement and process stability were analyzed. The results showed that, the removal rate of COD, NH_4~+-N, TN and TP reached 96.8%, 96.4%, 70% and 80% respectively,the quality of system effluent was good which reached the three level discharge standard of the second period of DB 44/26-2001, and had good resistance to impact load. UASB contributed to 94.33% of COD removal and A~2/O-MBR system contributed to 76.23%, 77.22% and 58.05% of NH_4~+-N, TN and TP removal respectively. In terms of stability of combined system, the resistance to shock load of different pollutants were COD>NH_4~+-N>TP>TN.
引文
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[2]ZHANG R,EL-MASHAD H,HARTMAN K,et al.Characterization of food waste as feedstock for anaerobic digestion[J].Bioresource Technology,2007,98(4):929-935.
[3]LI R,CHEN S,LI X.Anaerobic co-digestion of kitchen waste and cattle manure for methane production[J].Energy Sources Part ARecovery Utilization&Environmental Effects,2009,31(20):1848-1856.
[4]秦华明,尹华,张娜,等.生物强化技术处理含油脂废水的研究[J].水处理技术,2007,33(3):33-35.
[5]TIAN X,GAO X,WANG C,et al.An enhanced anaerobic membrane bioreactor treating bamboo industry wastewater by bamboo charcoal addition:Performance and microbial community analysis[J].Bioresour Technol,2016,220:26-33.
[6]MO譙INO P,AGUADO D,BARAT R,et al.A new strategy to maximize organic matter valorization in municipalities:Combination of urban wastewater with kitchen food waste and its treatment with An MBR technology[J].Waste Management,2017,62:274-289.
[7]XIAO X,HUANG Z,RUAN W,et al.Evaluation and characterization during the anaerobic digestion of high-strength kitchen waste slurry via a pilot-scale anaerobic membrane bioreactor[J].Bioresource Technology,2015,193:234-242.
[8]陶霞,蒋剑虹,唐清畅,等.混凝沉淀工艺处理餐厨废水的研究[J].环境科学与管理,2016,41(7):121-124.
[9]蒋剑虹,陶霞,唐清畅,等.Fenton氧化法深度处理餐厨废水[J].环境卫生工程,2017,25(2):44-47.
[10]黄振兴,席克忠,肖小兰,等.污泥停留时间对厌氧膜生物反应器处理餐厨废水效能的影响[J].环境工程学报,2016,10(11):6357-6363.
[11]赵锦辉,常小燕,何成达,等.厌氧-好氧填料床联合处理餐饮废水的研究[J].环境科学与管理,2007,32(5):105-108.
[12]广东水污染物排放限值:DB 44/26-2001[S].
[13]国家环境保护总局《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.
[14]王罕,杨海亮,赵应群,等.内循环厌氧反应器处理餐厨废水的酸化及恢复[J].水处理技术,2014(5):108-111.
[15]王罕,王晨,田兴,等.气升环流反应器处理去油脂餐厨垃圾废水[J].工业安全与环保,2014(9):23-26.
[16]胡志强,储茵,马友华.ABR-SBR组合工艺系统处理餐饮废水的试验研究[J].水处理技术,2011,37(3):72-75.
[17]DAIGGER G T,HELEN X L.Characterization of simultaneous nutrient removal in staged,closed-loop bioreactors[J].Water Environment Research,2000,72(3):330-339.
[18]张小玲,刘茜湘,赵剑强.COD/TP比及NO2--N/TP对短程反硝化聚磷的影响[J].环境科学与技术,2010,33(12):28-31.