微压流化式复合生物反应器的同步脱氮  

Simulataneous Nitrogen Removal in the Micro-Pressurized Fluidized Hybrid Biological Reactor

作　　者：刘淼[1] 陈睿阳[1] 李广柱[1] 郎贵林[1] 

机构地区：[1]吉林大学地下水资源与环境教育部重点实验室,长春130021

出　　处：《吉林大学学报（地球科学版）》2012年第3期832-837,共6页Journal of Jilin University：Earth Science Edition

基　　金：科技部重大专项(2012ZX07202009)

摘　　要：通过对曝气系统的调节,微压流化式复合生物反应器(MP-FHBR)内可以实现好氧区和缺氧区共存,利用这一特点和MP-FHBR中同时存在的活性污泥﹑悬浮生物膜复合生物体系,进行了同步脱氮的试验研究。结果表明,MP-FHBR在好氧-缺氧条件下,实现了同步脱氮过程,TN和COD的平均去除率分别达到77.5%和98.3%。降低DO质量浓度使反应器内形成完全缺氧环境,对MP-FHBR同步脱氮效果没有显著影响,但会降低系统去除COD的效果;而提高DO质量浓度使反应器内形成完全好氧环境,MP-FHBR同步脱氮效果显著下降。在一定范围内提高进水COD/TN有利于提高MP-FHBR同步脱氮效果,COD/TN由2升高到10,TN平均去除率由58.4%提高到78.8%,而继续提高COD/TN对系统同步脱氮效果的影响并不明显。在反应器允许的条件下,提高污泥质量浓度(MLSS)有利于提高系统反硝化脱氮效果,TN去除率随MLSS的增加而提高。By regulating aeration system,anoxic and aerobic areas can coexist in the micro-pressurized fluidized hybrid biological reactor（MP-FHBR）.Using the characteristic and the mixed organism of activated sludge and suspended biofilm coexisting in the MP-FHBR,study was conducted for simulataneous nitrogen removal.The experimental results showed that,nitrogen can be effectively simulataneous removal under the condition of anoxic-aerobic in the MP-FHBR.Under the conditions of this experiment,removal rates of TN and COD reached 77.5% and 98.3% respectively.Reducing the DO concentration to form completely anoxic environment within the reactor have no significant influence on TN removal effect of MP-FHBR,but it reduce the COD removal rate of the system.Improving the DO concentration to form completely aerobic environment within the reactor,TN removal effect of MP-FHBR decreased significantly.With the increasing of COD/TN,the TN removal efficiency was increased.TN removal efficiency was increased from 58.4% to 78.8%,when COD/TN was increased from 2 to 10,further increasing COD/TN,TN removal effect was not significantly increased.With the increase of MLSS,the TN removal efficiency was increased,leading to a more apparent denitrification efficiency of MP-FHBR.

关 键 词：复合生物反应器 缺氧 好氧 脱氮 污水处理 

分 类 号：X523[环境科学与工程—环境工程]