MBR PROCESS DESIGN IN A RECLAIMED WATER PLANT IN NORTH CHINA
-
摘要: MBR因其显著的优势成为市政污水深度处理领域最有效的技术之一,但高昂的运行成本限制了MBR的推广应用。以北方某再生水厂大型MBR污水处理工程为例,探究所采用的新型膜装置以及合理的工艺设计对膜污染及运行能耗的控制效果。实际运行数据分析得出以下结论:1)进水污染物浓度虽然有较大波动,但其出水水质稳定,各项指标优于排放标准(DB 11/890—2012《城镇污水处理厂水污染物排放标准》)中B标准的要求。2)MBR系统采用PVDF材质,TIPS工艺制造的膜产品,膜丝强度大,组器填充密度高达895 m2/m3。3)MBR工艺采用先进的预处理系统和高强度脉冲曝气系统有效缓解膜污染,节省曝气量约25%。Abstract: MBR had become one of the most effective technologies in the field of municipal wastewater advanced treatment due to its obvious advantages, but its high operating cost limited its promotion and application. Taking a large MBR sewage treatment project of a reclaimed water plant in North China for example, membrane pollution and operation energy consumption were explored by adopting new membrane device and reasonable process design. The following conclusions were drawn by analyzing the actual operation data as follows:1) although the concentration of the influent pollutants fluctuated greatly, the effluent quality was stable and water quality indices were superior than the class B requirements specified in Water Pollutants for Municipal Wastewater Treatment Plants(DB 11/890-2012); 2) the membrane products in applied in the MBR system was PVDF material and prepared by TIPS method. The membrane featured high strength and high filling density, reaching 895 m2/m3; 3) advanced pre-treatment system and high intensity pulse aeration system were adopted in the MBR to effectively reduce the membrane fouling, and then the aeration cost was reduced by about 25%.
-
[1] 黄霞,文湘华.水处理膜生物反应器原理与应用[M].北京:科学出版社,2012. [2] CHIEMCHAISRI C,YAMAMOTO K.Performance of membrane separation bioreactor at various temperatures for domestic wastewater treatment[J].Journal of Membrane Science,1994,87(1/2):119-129. [3] KRAUME M,DREWS A.Membrane bioreactors in waste water treatment-status and trends[J].Chemical Engineering & Technology,2010,33(8):1251-1259. [4] WANG Z W,WU Z C.A review of membrane fouling in MBRs:characteristics and role of sludge cake formed on membrane surfaces[J].Separation Science and Technology,2009,44(15):3571-3596. [5] 李慧.MFC-MBR耦合系统污水处理效能及膜污染控制研究[D].哈尔滨:哈尔滨工业大学,2016. [6] 贾海涛,周厚方,贺佳杰,等.地下式MBR污水处理厂运行效果及能耗分析[J].给水排水,2016,42(8):40-43. [7] DEFRANCE L,JAFFRIN M Y,GUPTA B,et al.Contribution of various constituents of activated sludge to membrane bioreactor fouling[J].Bioresource Technology,2000,73(2):105-112. [8] INABA T,HORI T,NAVARROA R R,et al.Revealing sludge and biofilm microbiomes in membrane bioreactor treating piggery wastewater by non-destructive microscopy and 16S rRNA gene sequencing[J].Chemical Engineering Journal,2018,331:75-83. [9] WANG J W,FANE A G,CHEW J W.Effect of bubble characteristics on critical flux in the microfiltration of particulate foulants[J].Journal of Membrane Science,2017,535:279-293. [10] WU Q,YAN X X,XIAO K,et al.Optimization of membrane unit location in a full-scale membrane bioreactor using computational fluid dynamics[J].Bioresource Technology,2018,249:402-409. [11] 王志,甄寒菲,王世昌,等.膜过程中防治膜污染强化渗透通量技术进展(Ⅰ)操作策略[J].膜科学与技术,1999,(1):1-11. [12] POLICE A,LAERA G,SATURNO D,et al.Effects of sludge retention time on the performance of a membrane bioreactor treating municipal sewage[J].Journal of Membrane Science,2008,317:65-70. [13] TARDIEU E,GRASMICK A,GEAUGEY V,et al.Hydrodynamic control of bioparticle deposition in a MBR applied to wastewater treatment[J].Journal of Membrane Science,1998,147:1-12. [14] 陈俊平,杨昌柱,葛守飞,等.膜生物反应器在污水处理过程中的膜污染控制[J].净水技术,2005,24(3):38-44. [15] ZONDERVAN E,BETLEM B H L,BLANKERT B,et al.Modeling and optimization of a sequence of chemical cleaning cycles in dead-end ultrafiltration[J].Journal of Membrane Science,2008,308:207-217. [16] HONG S P,BAE T H,TAK T M,et al.Fouling control in activated sludge submerged hollow fiber membrane bioreactors[J].Desalination,2002,143:219-228. [17] WU Q,YAN X X,XIAO K,et al.Optimization of membrane unit location in a full-scale membrane bioreactor using computational fluid dynamics[J].Bioresource Technology,2018,249:402-409. [18] 柳蒙蒙,陈梅雪,杨敏,等.基于CFD的大型膜生物反应器的设计及运行优化[J].环境工程学报,2018,12(2):552-558. [19] 梁汀,蒋岚岚,张万里,等.中空纤维膜MBR污水处理工艺中细格栅系统设计探讨[J].给水排水,2014,40(4):99-101. [20] 操建华,朱宝库,左丹英,等.热诱导相分离法制备聚合物微孔膜研究进展[J].高分子材料科学与工程,2004,20(5):10-14. [21] 张彬,甄宗晴,郑晓红,等.热致相分离法制备PVDF超滤膜处理饮用水中试[J].水处理技术,2014,40(6):107-109. [22] 王盼,邹伟国,王志伟.反应器构型对MBR运行性能的影响研究[J].城市道桥与防洪,2016(1):164-167. [23] 蒋岚岚,龚兆宇,胡邦,等.无锡城北污水处理厂MBR系统运行效果分析与探讨[J].环境工程,2013,31(2):1-4. [24] 孙寓姣,王勇,黄霞.MBR系统内丝状菌污泥膨胀的分子生态学解析[J].环境科学,2004,25(6):56-58. [25] 李艺,黄鸥,曹志农,等.给水排水设计手册[M].3版.北京:中国建筑工业出版社,2017.
点击查看大图
计量
- 文章访问数: 244
- HTML全文浏览量: 30
- PDF下载量: 17
- 被引次数: 0