李敏毕业论文2015技术总结.doc

2015届毕业设计(论文) 课题题目： 院 （系）： 生物与制药工程学院 专 业： 工程 学 号： P130 姓 名： 指导教师： 博导 起迄日期： 201.12—2015.6 摘要 我国环境污染问题的问题越来越引严重，废水污染已成为环境污染中比较难解决的严重问题。然而，现有废水处理技术有能耗大，投资和建设费用高，使用面积大等问题。所以必须马上开发低耗，高效，占地面积少的新型废水处理技术。 本论文将进行厌氧生物流化床处理高浓度PTA废水的实验研究，并获得生物流化床来处理污水的优化工艺及其参数。借助计算流体力学（CFD）手段对流化床内流场进行数值模拟，归纳总结能有效描述反应器内部复杂流动的设和计放大规律。 反应器分别以颗粒活性炭和PP有机填料为微生物载体，均显示出良好的污染物降解效能。 反应器在分别装填两种不同载体情况下，COD和TA去除率均随着HRT的缩短呈现一定程度的下滑，系统有机容积负荷增加。 （3）以Monod方程为基础，建立快速传质厌氧生物流化床底物降解动力学模型：，通过改变系统运行参数进行数据拟合，得到动力学方程：，饱和常数Ks为2422.10mg/L，最大降解速率νmax为3.32d-1。ABSTRACT Nowadays, the environmental pollution in our country is very serious; was te water treatment is an important is sure to be resolved. However, the problems such as large energy exhaustion, high investment and operating cost, and large covering are ubiquitous in the present was te water treatment This paper will be of PTA wastewater anaerobic biological fluidized bed processing research of experimental research, and optimization of process and its parameters of biological fluidized bed sewage. With the help of computational fluid dynamics (CFD) method, a numerical simulation of the flow field in the fluidized bed generalizations can effectively describe the counsels and reactor complex internal flow law of amplification. （1）Two kinds of granular activated carbon is organic filler and PP microbial carrier reactor, all show good degradation efficiency of pollutants. Reactor under the condition of loading two different carrier, COD removal efficiency and TA are increased with the shorten of HRT presents a cert a in degree of decline, or ganic volume load increase. （3）Based on Monod equation, build fast mass transfer an aerobic biological fluidized bed kinetics of substrate degradation model,by changing the system operation parameters for data fitting, dynamics equation is obtained: saturation constant Ksis2422.10mg/L, maxi mum degradation rate argument Ma