基于玻璃微珠填料生物滤池生物堵塞模型  

Biological clogging model based on biological filter packed with glass beads

作　　者：邵川[1] 周正伟[1] 李俊[1] 吴军[1] SHAO Chuan ZHOU Zhengwei LI Jun WU Jun(State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China)

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,南京210023

出　　处：《环境工程学报》2017年第10期5368-5374,共7页Chinese Journal of Environmental Engineering

摘　　要：颗粒填料生物滤池运行过程中,微生物在颗粒填料表层不断生长积累,造成生物堵塞,严重影响生物滤池长期稳定运行。针对生物滤池颗粒填料层动态堵塞过程,综合基质迁移与降解模型、微生物生长与衰亡模型、孔隙率变化模型和渗滤系数变化模型,构建颗粒填料生物滤池生物堵塞模型。微生物生长动力学参数采用原位测定方法,能够反映附着生物膜生长情况。基于玻璃微珠填料生物滤池研究表明,修正生物堵塞模型能较好地模拟玻璃微珠生物滤池颗粒填料层的动态堵塞过程。During the operation period of particle packing biological filters,biological clogging caused by accumulations of biomass in the top layer could be considered as one of crucial factors affecting their long term stable operation.In order to simulate the dynamic bio-clogging procedure,a biological clogging model in a biological filter packed with glass beads was established by combining the substrates convective diffusion and degradation model,the microorganism growth and decay model,the porosity variation model and the permeability variation model.Biological kinetics parameters were measured by in situ measurement method so as to reflect the actual growth characteristics of the attached biofilm.The results demonstrated that the modified biological clogging model could properly simulate the dynamic clogging process in the glass bead packing biological filter.

关 键 词：颗粒填料生物滤池 动力学参数 渗滤系数 生物堵塞 数学模型 

分 类 号：X703[环境科学与工程—环境工程]