曝气强度对AOA膜生物反应器脱氮除磷性能的影响  

Effect of Aeration Intensity on the Nitrogen and Phosphorus Removal Performance of AOA Membrane Bioreactors

作　　者：陈晓旸[1] 薛智勇[1] 肖景霓[2,3] 张捍民[4] 杨凤林[4] 王卫平[1] 洪春来[1] 朱凤香[1] 

机构地区：[1]浙江省农业科学院环境资源与土壤肥料研究所,杭州310021 [2]大连海洋大学海洋环境工程学院,大连116023 [3]辽宁省高校近岸海洋环境科学与技术重点实验室,大连116023 [4]大连理工大学环境与生命学院,大连116024

出　　处：《环境科学》2011年第10期2979-2985,共7页Environmental Science

基　　金：浙江省科技计划项目(2009C33075);大连海洋大学人才引进项目(SYYJ200801)

摘　　要：考察了曝气强度为2.5、3.75和5.0 m3.(m2.h)-1条件下,厌氧/好氧/缺氧序批式膜生物反应器(AOA MBR)对模拟生活污水同时脱氮除磷性能的影响.结果表明,曝气强度对AOA MBR中COD的去除无显著影响,去除效率均在90%以上.氨氮的去除效果随着曝气强度的增加而提高,3个曝气强度下的平均去除率分别为84.7%、90.6%和93.8%.TN的去除率随着曝气强度的增加呈现先上升后下降的趋势,3种条件下分别为83.4%、87.4%和80.6%.系统的反硝化除磷性能亦受曝气强度影响,3个曝气强度下系统中反硝化除磷的比例分别为20%、30.2%和26.7%.The ability of simultaneous phosphorus and nitrogen removal of sequencing batch membrane bioreactor run in anaerobic/oxic/anoxic mode（AOA MBR） was examined under three aeration intensities[2.5,3.75 and 5.0 m3·（m2·h）-1].The results showed that the averaged removals of COD were over 90% at different aeration intensities.And the higher aeration intensity was,the more ammonia nitrogen removal rate achieved.The removal rates of NH＋4 under the three aeration intensities were 84.7%,90.6% and 93.8%,respectively.Total nitrogen removal rate increased with the increasing aeration intensity.But excessive aeration intensity reduced TN removal.The removal rates of TN under the three aeration intensities were 83.4%,87.4% and 80.6%,respectively.Aeration intensity affected the denitrifying phosphorus ability of the AOA MBR.The ratio of denitrification phosphorus removal under the three aeration intensities were 20%,30.2% and 26.7%,respectively.

关 键 词：膜生物反应器 曝气强度 脱氮除磷 反硝化除磷 污水处理 

分 类 号：X703[环境科学与工程—环境工程]