升流式曝气生物滤池运行特性及动力学

发布时间：2017-12-26 18:34

本文关键词：升流式曝气生物滤池运行特性及动力学　出处：《化工进展》2017年10期 　论文类型：期刊论文

【摘要】：研究采用升流式曝气生物滤池(UBAF)处理亚甲基蓝模拟废水,进行了长期连续实验,考察了UBAF启动和挂膜情况,分析了曝气生物滤池池体内部生物量随填料高度的变化及沿程污染物去除规律,根据不同水力负荷下不同填料层高度有机底物降解效果,建立了有机底物降解动力学模型。结果表明:UBAF持续挂膜43天后,填料表面附着大量的微生物,生物相丰富,COD、NH_3-N和色度去除率分别为80.93%、73.81%和56.79%;在最佳工况下稳定运行,生物膜厚度、微生物量和沿程污染物降解速率均随填料高度增加而降低,COD、NH_3-N和色度的去除主要集中在填料高度35cm以下。通过分析不同水力负荷下不同填料高度COD的变化情况,得到有机底物降解动力学模型,动力学模型参数n和K_2分别为0.2022和0.0406。
[Abstract]:Study on the up flow biological aerated filter (UBAF) with methylene blue in wastewater, the long-term continuous experiment, the effects of UBAF and start the biofilm, analyses the change of body biomass biological aerated filter pool with the filling height and along the regularity of pollutant removal, according to different hydraulic load under different organic packing layer height the effect of substrate degradation, a substrate degradation kinetics model. The results show that the UBAF film hanging for 43 days, the filler surface attached to a large number of microorganisms, biological phase rich in COD, NH_3-N and color removal rate were 80.93%, 73.81% and 56.79%; stable operation in the best conditions, biofilm thickness, microbial biomass and pollutant degradation rate along with the filling height increases. The removal of COD, NH_3-N and chroma are mainly concentrated in the filling height below 35cm. By analyzing the change of COD of different packing height under different hydraulic loads, the kinetic model of organic substrate degradation was obtained. The kinetic parameters of N and K_2 were 0.2022 and 0.0406, respectively.
【作者单位】：东北电力大学化学工程学院;
【基金】：国家自然科学基金(51678119) 吉林省科技发展计划(20150204052SF,20160101268JC,20150519020JH)项目
【分类号】：X703
【正文快照】： 废气的生物处理理论与工艺研究。E-mail:1252589367@qq.com。联系人:张兰河,博士,教授,主要从事废水及废气的治理工作。E-mail:zhanglanhe@163.com。曝气生物滤池(BAF)是一种新型的好氧生物处理工艺,该工艺集滤层的截留过滤作用和生物膜的强氧化降解作用于一体[1],具有占地面

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