弹性填料强化A/O工艺处理炼化废水试验
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摘要
目的改良A/O工艺的传统工艺,解决生物法处理炼化废水效能较差的问题.方法进行A/O工艺的小试驯化研究,在A/O工艺的好氧池内增加弹性填料,以期提高微生物活性,强化炼化废水的处理效果.结果填料的增加对工艺的启动效率,微生物的活性以及污染物的去除效果都有显著的提高.弹性填料的弹性结构,可以较稳定且持久地吸附炼化废水中的少量油份及微生物,这不但提高了被吸附截留的微生物的污泥龄,有助于其种群富集与特异性优化,而且减少了油份对悬浮污泥的影响,提高了悬浮污泥的微生物活性.填料对曝气气泡的切割,增加了溶解氧质量浓度,减少了厌氧池带来的质量浓度梯度对好氧池的影响,也提高了硝化细菌等好氧细菌的活性.改良后的A/O工艺COD去除率提高10%,氨氮去除率提高10%,总氮去除率提高15%.结论弹性填料的增加,有效地提高了生物法处理炼化废水的综合效能.
In order to improve the performance of biological treatment for the refinery wastewater by traditional process of A/O process,a small-scale domestication study of the A/O process was performed. In the aerobic tank of the A/O process,an elastic filler is added to increase the microbial activity and enhance the treatment effect of the refinery wastewater. The filler has a significant increase in the starting efficiency of the process,the activity of microorganisms,and the removal effect of pollutants. The small amount of oil and microorganisms can be stably and lastingly absorbed because of the elastic structure of the elastic filler. As a result of it,not only the sludge age of the microorganisms that have been adsorbed and trapped has been increased,which contributes to their population enrichment and specificity optimization,but also reduced the impact of oil onsuspended sludge and improved the microbial activity of suspended sludge. The cutting of aeration bubbles by the filler increases the dissolved oxygen concentration,reduces the influence of the concentration gradient resulted from by the anaerobic tank on the aerobic tank,and increases the activity of aerobic bacteria such as nitrifying bacteria. The COD removal rate was increased 10%,ammonia nitrogen removal rate was increased by 10%,and total nitrogen removal rate was increased by 15% by modified A/O process. Above all,the comprehensive efficiency of refinery wastewater by biological treatment can be improved effectively by elastic filler added.
In order to improve the performance of biological treatment for the refinery wastewater by traditional process of A/O process,a small-scale domestication study of the A/O process was performed. In the aerobic tank of the A/O process,an elastic filler is added to increase the microbial activity and enhance the treatment effect of the refinery wastewater. The filler has a significant increase in the starting efficiency of the process,the activity of microorganisms,and the removal effect of pollutants. The small amount of oil and microorganisms can be stably and lastingly absorbed because of the elastic structure of the elastic filler. As a result of it,not only the sludge age of the microorganisms that have been adsorbed and trapped has been increased,which contributes to their population enrichment and specificity optimization,but also reduced the impact of oil onsuspended sludge and improved the microbial activity of suspended sludge. The cutting of aeration bubbles by the filler increases the dissolved oxygen concentration,reduces the influence of the concentration gradient resulted from by the anaerobic tank on the aerobic tank,and increases the activity of aerobic bacteria such as nitrifying bacteria. The COD removal rate was increased 10%,ammonia nitrogen removal rate was increased by 10%,and total nitrogen removal rate was increased by 15% by modified A/O process. Above all,the comprehensive efficiency of refinery wastewater by biological treatment can be improved effectively by elastic filler added.
引文
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[20] SCHAFER M,BROCARD AURLIE,et al.Treatment of acidic wastewater arising from the refining of vegetable oil by crossflowmicrofiltration at very lowtransmembrane pressure[J]. Process biochemistry,2007,42(4):693-699.
[21] BROWNING K,MUNCH M. Nutrient removal and plant biomass in a subsurface flowconstructed wetland in Brisbane Australia[J]. Water science and technology,2003,48(5):183-189.
[2]陈平,王晨,刘明伟,等.含油废水处理技术的研究进展[J].当代化工,2016(6):1286-1288.(CHEN Ping,WANG Chen,LIU Mingwei,et al. Research progress of oily wastewater treatment technology[J]. Contemporary chemical industry,2016(6):1286-1288.)
[3]李思,赵红阳,张金辉,等.生物法处理炼油废水的研究进展[J].当代化工,2013(11):1621-1623.(LI Si,ZHAO Hongyang,ZHANG Jinhui,et al. Research progress in oil refinery wastewater treatment by biological methods[J]. Contemporary chemical industry,2013(11):1621-1623.)
[4] LIU Xianling,WEN Jianping,YUAN Qing,et al. The pilot study for oil refinery wastewater treatment using a gas-liquid-solid three-phase flowairlift loop bioreactor[J]. Biochemical engineering journal,2005,27(1):40-44.
[5] JETTE M,WAGNER K. A pilot study for oil refinery wastewater treatment using a fixed bioreactor[J]. Advances in environment research,2007,7(2):463-469.
[6]雍文彬,邬向东,李力,等.膜生物反应器(MBR)处理炼油污水[J].水处理技术,2005,31(11):79-81.(YONG Wenbin,WU Xiangdong,LI Li,et al.Treatment of oil-refining wastewater by membrane biological reactor(MBR)[J]. Technolo-gy of water treatment,2005,31(11):79-81.)
[7]谭周亮,杨俊仕,李旭东.微生物菌剂强化处理炼油废水的中试研究[J].水处理技术,2007(2):67-70.(TAN Zhouliang,YANG Junshi,LI Xudong.Pilot-scale research on oil refinery wastewater treatment by microorganism agent[J]. Technology of water treatment,2007(2):67-70.)
[8] ZEEMAN B H,LUOSTARINEN S A. Treatment technologies for petroleum refinery effluents:A review[J]. Process safety and environmental protection,2011,89(2):95-105.
[9]曹艳晓,龙腾锐,黄祥荣,等.水解/AMBBR/好氧工艺和传统A/O工艺处理低碳源污水的对比研究[J].环境工程学报,2010,4(12):2776-2780.(CAO Yanxiao,LONG Tengrui,HUANG Xiangrong,et al. Comparative study of lowcarbon source wastewater treatment by hydrolysis acidification/anoxicmoving biological biofilm reactor/aerobic process and conventional anoxic/aerobic process[J]. Chinese journal of environmental engineering, 2010, 4(12):2776-2780.)
[10]于玲红,隋秀斌,杨文焕,等. AMBBR/SMBBR与A/O工艺处理石油发酵工业废水的对比研究[J].现代化工,2017,37(3):179-182.(YU Linghong,SUI Xiubin,YANG Wenhuan,et al. A comparative study on treatment of petroleum fermentation industrial wastewater by AMBBR/SMBBR and A/O processes[J].Modern chemical industry,2013,37(3):179-182.)
[11] YANG Ruihong,ZHU Jianzhong,ZHANG Hui,et al. Study of pre-treatment of oil refinery wastewater by eef-enhanced micro-electrolysis[J]. Ozone:science&engineering,2016,38(6):472-481.
[12]李辰,陈洪斌,刘富强,等.两级AO工艺处理黑水研究[J].水处理技术,2013(3):94-98.(LI Chen,CHEN Hongbin,LIU Fuqiang,et al. Study on treatment of blackwater using two-stage AO process[J]. Technology of water treatment,2013(3):94-98.)
[13]邓纪鹏,张轶凡,马劲,等.悬浮填料AO工艺处理城市污水中试研究[J].天津建设科技,2009(6):53-55.(DENG Jipeng,ZHANG Yifan,MA Jin,et al.Pilot study on municipal wastewater treatment by suspended filler AO process[J]. Tianjin construction science and technology,2009(6):53-55.)
[14]周东凯.新型纤维挂膜填料污水处理研究[D].北京:北京化工大学,2013.(ZHOU Dongkai. Novel fibrous fillers in biofilm process for wastewater treatment[D].Beijing:Beijing University of Chemical Technology,2013.)
[15]赵玉华,赵杰,李艳凤,等.组合填料生物滤床处理污水脱碳氮磷性能试验[J].沈阳建筑大学学报(自然科学版),2011,27(5):957-961.(ZHAO Yuhua,ZHAO Jie,LI Yanfeng,et al.Experimental Study on Characteristics of Biological Filter with Combination Packing for Removal C,N and P from Sewage[J]. Journal of Shenyang jianzhu university(natural science edition),2011,27(5):957-961.)
[16] LIMP E,MARK K Y,MOHAMED N,et al.Removal and speciation of heavy metals along the treatment path of wastewater in subsurfaceflowconstructed wetlands[J]. Water science and technology,2003,48(5):307-313.
[17]王宝贞,王琳.水污染治理新技术:新工艺、新概念、新理论[M].北京:科学出版社,2004.(WANG Baozhen,WANG Lin. Newtechnology of water pollution control:newtechnology,newconcept,newtheory[M]. Beijing:Science Press,2004.)
[18] MURAT S,HANAEUS J. The design and performance of a vertical flowreed red for the treatment of high ammonia,lowsuspended solid organic effluents[J]. Water science technology,1997,35(5):197-204.
[19]丛轮刚,南海娟,王翠翠,等.煤化工综合废水处理技术及应用进展[J].环境工程,2015(增刊1):20-24.(CONG Lungang,NAN Haijuan,WANG Cuicui,et al. Application progress and treatment technology of wastewater from coal chemical industry[J]. Environmental engineering,2015(S1):20-24.)
[20] SCHAFER M,BROCARD AURLIE,et al.Treatment of acidic wastewater arising from the refining of vegetable oil by crossflowmicrofiltration at very lowtransmembrane pressure[J]. Process biochemistry,2007,42(4):693-699.
[21] BROWNING K,MUNCH M. Nutrient removal and plant biomass in a subsurface flowconstructed wetland in Brisbane Australia[J]. Water science and technology,2003,48(5):183-189.