基于对流扩散方程和ASM2D的氧化沟耦合模型研究
摘要
基于ASM2D模型和对流-扩散方程,建立一维氧化沟的生化反应耦合模型,采用过程工程法对模型中溶解氧传质系数、聚磷菌的乙酸半饱和系数和最大自养菌生长比速率三个模型参数进行修正。以桂林某污水处理厂氧化沟为例,校正后模型模拟了连续61d实际运行过程,计算所得NH3-N和PO3-4-P去除率平均误差分别为15.35%和3.39%,表明所建立的模型能较好模拟氧化沟中的脱氮除磷过程,最后模拟讨论了可能的优化方案。
引文
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9 Henze M,Gujer W,mino T,et al.Activated sludge model no.2 D,ASM2D.Water science and technology,1999,39(1):165~182
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12 Fayolle Y,Cockx A,Gillot S,et al.Oxygen transfer prediction in aeration tanks using CFD.Chemical Engineering Science,2007,62(24):7163~7171
2 杨跃.三沟式氧化沟工艺数值模拟与优化运行研究:[学位论文].哈尔滨:哈尔滨工业大学,2010
3 Liu Y,Shi H,Wang Z,et al.Approach to enhancing nitrogen removal performance with fluctuation of influent in an oxidation ditch system.Chemical Engineering Journal,2013,219:520~526
4 Littleton H X,Daigger G T,Strom P F.Application of computational fluid dynamics to closed-loop bioreactors:II.Simulation of biological phosphorus removal using computational fluid dynamics.Water environment research,2007,79(6):613~624
5 孙培德,吴革.A/O工艺污水处理厂FCASM3-Hydro耦合模型及现场校验.环境科学学报,2008,28(12):2456~2464
6 Zima P,Makinia J,Swinarski M,et al.Combining computational fluid dynamics with a biokinetic model for predicting ammonia and phosphate behavior in aeration tanks.Water Environment Research,2009,81(11):2353~2362
7 许丹宇,张代钧,唐运平,等.污泥—废水2相湍流与生物反应耦合模型及应用.应用基础与工程科学学报,2010,18(05):723~733
8 王敦球,赵成根,孙晓杰,等.桂林市七里店污水净化厂氧化沟升级改造.中国给水排水,2010,26(22):69~71
9 Henze M,Gujer W,mino T,et al.Activated sludge model no.2 D,ASM2D.Water science and technology,1999,39(1):165~182
10 孙培德,宋英琦,王如意,等.活性污泥动力学模型机数值模拟.北京:化学工业出版社,2009
11 杨亚红,彭党聪,韩芸,等.无厌氧池的氧化沟脱氮除磷功效分析.中国给水排水,2011,27(9):5~8
12 Fayolle Y,Cockx A,Gillot S,et al.Oxygen transfer prediction in aeration tanks using CFD.Chemical Engineering Science,2007,62(24):7163~7171