管式O_3/UV-BAF处理印染生化尾水的中试实验
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摘要
以印染污水生化处理出水为研究对象,组建了集管式臭氧/紫外(O_3/UV)反应系统、臭氧发生系统、气液分离系统、臭氧破坏系统和生物曝气滤池(BAF)系统为一体的中试集成设备。分别研究了各单元及O_3/UV-BAF一体化设备的运行效果。结果表明,COD范围为62.3～102.1 mg·L~(-1),平均值为83.2 mg·L~(-1)时的进水经过O_3/UV处理后,BOD5浓度可增加3倍以上,该处理单元可提高污水的生化性能;而单独BAF处理,COD去除率仅为22.5%,表明该污水生化性能较差(BOD5/COD=0.117)且出水COD浓度也不能达到排放标准;O_3/UV-BAF联合工艺对印染废水则呈现良好的处理,出水COD去除率达到46.93%,UV_(254)去除率为39.73%。此外,该联合工艺对色度、TN和TP也具有较好的去除效果,去除率分别为54%、34.52%和53.81%,均可达到排放标准。通过对O_3/UV-BAF一体化中试设备的评估,为管式O_3/UV高级氧化大规模工程应用提供技术支撑。
In this study, the biochemical secondary effluent of treating printing and dyeing wastewater was used to test the an O_3/UV-BAF integrated pilot equipment including the tubular O_3/UV reaction system, the ozone generation system, the gas-liquid separation system, the ozone destruction system and the biological aeration filter(BAF) system. The performances of this equipment and its units were studied. The results showed that the influent with COD of 62.3～102.1 mg·L~(-1)(average COD of 83.2 mg·L~(-1)) was treated by O_3/UV, its BOD5 concentration could increase by more than 3 times, which indicated that O_3/UV treatment could increase the biodegradability of this influent. However, single BAF treatment only reduced 22.5% COD of influent with a poor biodegradability(BOD5/COD=0.117), and the effluent didn't meet the discharge standard. The integrated process of O_3/UV-BAF showed a good performance on printing and dyeing wastewater treatment, the removal efficiencies of COD and UV_(254) could reach 46.93% and 39.73%, respectively. In addition, this integrated process also presented good removal for chroma, TN and TP, and their efficiencies were 54%, 34.52% and 53.81%,respectively. The evaluation of an O_3/UV-BAF integrated pilot equipment in this study could support the largescale engineering application of the tubular O_3/UV advanced oxidation.
In this study, the biochemical secondary effluent of treating printing and dyeing wastewater was used to test the an O_3/UV-BAF integrated pilot equipment including the tubular O_3/UV reaction system, the ozone generation system, the gas-liquid separation system, the ozone destruction system and the biological aeration filter(BAF) system. The performances of this equipment and its units were studied. The results showed that the influent with COD of 62.3～102.1 mg·L~(-1)(average COD of 83.2 mg·L~(-1)) was treated by O_3/UV, its BOD5 concentration could increase by more than 3 times, which indicated that O_3/UV treatment could increase the biodegradability of this influent. However, single BAF treatment only reduced 22.5% COD of influent with a poor biodegradability(BOD5/COD=0.117), and the effluent didn't meet the discharge standard. The integrated process of O_3/UV-BAF showed a good performance on printing and dyeing wastewater treatment, the removal efficiencies of COD and UV_(254) could reach 46.93% and 39.73%, respectively. In addition, this integrated process also presented good removal for chroma, TN and TP, and their efficiencies were 54%, 34.52% and 53.81%,respectively. The evaluation of an O_3/UV-BAF integrated pilot equipment in this study could support the largescale engineering application of the tubular O_3/UV advanced oxidation.
引文
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[25]BADER H,HOIGNE J.Determination of ozone in water by the indigo method[J].Water Research,2013,15(4):449-456.
[26]王树涛.O3/BAF联合工艺深度处理生活污水二级出水的研究[D].哈尔滨:哈尔滨工业大学,2007.
[2]邹新,史晓燕,李秀峰,等.工业园区污水处理模式探讨和建议[J].江西科学,2010,28(3):341-343.
[3]HAN S,NAM S,KANG J.·OH radical monitoring technologies for AOP advanced oxidation process[J].Water Science and Technology,2002,46(11/12):7-12.
[4]AMAT A M,ARQUES A,MIRANDA M A,et al.Use of ozone and/or UV in the treatment of effluents from board paper industry[J].Chemosphere,2005,60(8):1111-1117.
[5]SHANG N C,CHEN Y H,MA H W,et al.Oxidation of methyl methacrylate from semiconductor wastewater by O3and O3/UVprocesses[J].Journal of Hazardous Materials,2007,147(1):307-312.
[6]席彩文,刘彬彬.臭氧氧化法处理难去除有机废水[J].工业安全与环保,2006,31(11):15-17.
[7]杨正庆,杨丽霞,候一宁,等.臭氧氧化法处理实验室苯酚废水[J].环境科学与管理,2007,31(9):119-122.
[8]王军芳,朱世云,程鼎,等.臭氧氧化法处理染料废水技术进展[J].工业水处理,2008,28(6):8-11.
[9]王树涛,马军,田海,等.污水厂二级处理出水的臭氧氧化特性及其动力学[J].中国给水排水,2007,23(23):78-81
[10]曹国民,盛梅,刘勇弟.高级氧化-生化组合工艺处理难去除有机废水的研究进展[J].化工环保,2010,30(1):1-7.
[11]王树涛,马军,田海,等.臭氧预氧化/曝气生物滤池污水深度处理特性研究[J].现代化工,2007,26(11):32-36.
[12]刘剑玉,汪晓军,陈彦.臭氧预氧化-BAF深度处理造纸废水[J].中国造纸,2009,28(9):36-38.
[13]于德淼,马军.臭氧高级氧化与BAF联合污水深度处理工艺比较与研究[D].哈尔滨:哈尔滨工业大学,2006.
[14]TAMBO N,KAMEI T.Treatability evaluation of general organic matter.Matrix conception and its application for a regional water and waste water system[J].Water Research,1978,12(11):931-950.
[15]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
[16]CHIN A,BERUBE P R.Removal of disinfection by-product precursors with ozone-UV advanced oxidation process[J].Water Research,2005,39(10):2136-2144.
[17]郭召海,刘文保,沈骏,等.臭氧/生物滤池组合工艺深度处理印染废水[J].中国给水排水,2009,25(13):35-37.
[18]谢春生,黄瑞敏,肖继波,等.曝气生物滤池-纳滤深度处理印染废水的研究[J].中国给水排水,2007,23(15):69-72.
[19]ARSLAN-ALATON I,ALATON I.Degradation of xenobiotics originating from the textile preparation,dyeing,and finishing industry using ozonation and advanced oxidation[J].Ecotoxicology and Environmental Safety,2007,68(1):98-107.
[20]MARTINS R C,QUINTA-FERREIRA R M.Remediation of phenolic wastewaters by advanced oxidation processes(AOPs)at ambient conditions:Comparative studies[J].Chemical Engineering Science,2011,66(14SI):3243-3250.
[21]ABOUZLOM M,OUVRARD R,MEHDI D,et al.An optunal control of a wastewater treatment reactor by catalytic ozonation[J].Control Engineering Practice,2013,21(1):105-112.
[22]SNYDER S A,WERT E C,REXING D J,et al.Ozone oxidation of endocrine disruptors and pharmaceuticals in surface water and wastewater[J].Ozone:Science and Engineering,2006,28(6):445-460
[23]CHANG M C,SHU H Y,YU H H.An integrated technique using zero-valent iron and UV/H2O2sequential process for complete decolorization and mineralization of CI acid black 24 wastewater[J].Journal of Hazardous Materials,2006,138(3):574-581.
[24]汪晓军.臭氧-曝气生物滤池处理酸性玫瑰红染料废水[J].环境污染治理技术与设备,2006,7(7):43-46.
[25]BADER H,HOIGNE J.Determination of ozone in water by the indigo method[J].Water Research,2013,15(4):449-456.
[26]王树涛.O3/BAF联合工艺深度处理生活污水二级出水的研究[D].哈尔滨:哈尔滨工业大学,2007.
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