A/O一体化曝气生物滤池脱氮效能及其运行优化研究

考察了不同进水有机物浓度与溶解氧对A/O一体化曝气生物滤池脱氮效能的影响,并以总氮的去除率为评价指标.以好氧段溶解氧、滤速与填料高度为考察冈素,采用Box—Behnken响应曲面法优化A/O一体化曝气生物滤池的运行条件,同时得出相应的数学模型。结果表明:进水有机物浓度为400mg/L时,脱氮效果较好.总氮与氨氮的最大去除率分别为45.1%与76L3%:而当进水有机物浓度为200m以时,总氮与氨氮的去除率仗为20%与50%。当好氧段的溶解氧为3.5mg/L时,对总氮与氨氮的去除率分别为55.9%和89.4%;而当溶解氧为1.0mg/L,总氮与氨氮的去除率仅为25.0%和59.5%;好氧段溶解氧的...

Full description

Saved in:
Bibliographic Details
Published in广东农业科学 Vol. 38; no. 11; pp. 158 - 161
Main Author 宿程远 吕宏虹 李福英 王佳 李玉强 曹晓洁 朱江南
Format Journal Article
LanguageChinese
Published 哈尔滨工业大学市政环境学院,黑龙江,哈尔滨,100590%广西师范大学环境与资源学院/广西环境工程与保护评价重点实验室,广西,桂林,541004 2011
广西师范大学环境与资源学院/广西环境工程与保护评价重点实验室,广西,桂林,541004
Subjects
Online AccessGet full text
ISSN1004-874X
DOI10.3969/j.issn.1004-874X.2011.11.057

Cover

More Information
Summary:考察了不同进水有机物浓度与溶解氧对A/O一体化曝气生物滤池脱氮效能的影响,并以总氮的去除率为评价指标.以好氧段溶解氧、滤速与填料高度为考察冈素,采用Box—Behnken响应曲面法优化A/O一体化曝气生物滤池的运行条件,同时得出相应的数学模型。结果表明:进水有机物浓度为400mg/L时,脱氮效果较好.总氮与氨氮的最大去除率分别为45.1%与76L3%:而当进水有机物浓度为200m以时,总氮与氨氮的去除率仗为20%与50%。当好氧段的溶解氧为3.5mg/L时,对总氮与氨氮的去除率分别为55.9%和89.4%;而当溶解氧为1.0mg/L,总氮与氨氮的去除率仅为25.0%和59.5%;好氧段溶解氧的提高,有利于氮的去除,但能耗增大,因此可将溶解氧控制在2.0mg/L左右。由Box—Behnken响应曲面可知.滤速和填料高度的交互作用对总氮的去除效果影响显著;回归模型决定系数R2=0.9769,P=0.001,表明此模型拟合程度良好,且模型显著;最佳运行条件为:溶解氧为3.1mu/L,滤速为0.35cm3/s,滤层高度为55,6cm,在此条件下,由方程所得总氮最大的去除率为49.93%。
Bibliography:44-1267/S
A/O integrated biological aerated filter; nitrogen removal; dissolved oxygen; response surface methodology
SU Cheng-yuan, LV Hong-hong, LI Fu-ying, WANG Jia, LI Yu-qiang, CAO Xiao-jie, ZHU Jiang-nan (1.School of Environment and Resources, Guangxi Normal University/The Guangxi Key Lab of Environmental Engineering Protection and Assessment, Guilin 541004, China; 2.School of Municiple and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China)
This paper investigated the removal nitrogen with A/O integrated biological aerated filter at different organic concentration of inflow and DO in aerohic segment.The three-factor and three-level Box-Behnken was utilized for modeling and optimization conditlons.In this case, removal TN was selected as one response value, while the DO, filter height and filtration rate ,sere considered as effect factors. The results sbowed that when the organic concentration of inflow was 400 mg/L, the nitrogen removal was well.The removal rate of TN and ammon
ISSN:1004-874X
DOI:10.3969/j.issn.1004-874X.2011.11.057