粉煤灰强化低浓度异波折板厌氧反应器的功效  

Fly ash enhancement of the performance of a Modified Anerobic Baffled Reactor (MABR) in treatment of low strength wastewater

作　　者：叶长兵[1] 韩相奎[2] 毕冬[2] 庄金鹏[2] 刚旭 

机构地区：[1]吉林大学环境与资源学院 [2]吉林建筑工程学院市政与环境工程学院,长春130021 [3]长春水务集团,长春130020

出　　处：《环境科学学报》2008年第10期1988-1992,共5页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金资助项目(No.50778080)~~

摘　　要：在接种污泥中加入粉煤灰,旨在强化低浓度改进型折流板厌氧反应器(异波折板厌氧反应器)的功效.研究结果表明,在粉煤灰强化作用下,可大大缩短装置的启动时间,连续运行50d即可启动成功.此时加入不同粒径(大于83μm、20～83μm,小于20μm)粉煤灰的,COD的平均去除率分别为74.31%、77.52%、72.81%,TP平均去除率分别为32.87%、34.07%、30.92%,最大比甲烷生产率分别为2.21、2.33、2.04mL.g-.1h-1.短HRT运行条件下的对比研究结果表明,强化厌氧反应装置最佳功效的粉煤灰粒径为20～83μm.基于试验分析结果,阐明了粉煤灰强化异波折板厌氧反应装置功效的机理,并解释了20～83μm粒径的粉煤灰强化效果最佳的原因.In order to enhance the efficacy of Modified Anerobic Baffled Reaction （MABR） in low strength wastewater treatment, fly ash was mixed into inoculated anaerobic sludge. The results indicated that the start-up of all three test reactors run with fly ash enhancement was shortened markedly, and was completed after 50 days of operation. Average COD removal efficiencies of the 1 # , 2# and 3# reactors with different fly ash particle sizes （ 〉 83 μm, 20 83 μm and 〈20μm） were 74.31%, 77.2% and 72.81% ; average TP removal efficiencies were 32.87%, 34.07% and 30.92%; and specific methane production capacities were 2.21, 2.33 and 2.04 mL·g^- 1·h^- 1 , respectively. The results of operation at short HRTs indicated that the optimal particle size of the fly ash was 20 - 83 μm. Based on the experimental results, the mechanism of fly ash enhancement of MABR efficacy and the reasons why fly ash particles of 20 ～ 83μm obtained optimal efficacy are described.

关 键 词：粉煤灰 厌氧污泥 最大比甲烷生产率 机理 

分 类 号：X703[环境科学与工程—环境工程] TD353.6[矿业工程—矿井建设]