2种曝气工艺下老龄垃圾渗滤液部分亚硝化对比研究  

COMPARATIVE STUDY ON PARTIAL NITRITATION OF MATURE LANDFILL LEACHATE UNDER TWO KINDS OF AERATION STRATEGIES

作　　者：黄国涛[1] 周少奇[2,3,4] 徐斌[1] 李伙生[2] 

机构地区：[1]华南理工大学土木与交通学院,510641 [2]华南理工大学环境科学与工程学院,510006 [3]华南理工大学亚热带建筑科学国家重点实验室,510641 [4]广东省教育厅环境保护与生态修复重点实验室,广东广州510006

出　　处：《水处理技术》2013年第4期104-107,共4页Technology of Water Treatment

基　　金：广州市重大科技项目(2008DLB2080500);亚热带建筑科学国家重点实验室项目(2011ZB05;2012ZB08)

摘　　要：在间歇曝气(开/停时间为1.5 min/0.7 min)与连续曝气2种工艺条件下,采用序批式活性污泥法(SBR)对老龄垃圾渗滤液进行了部分亚硝化试验。结果表明,间歇与连续曝气均能实现渗滤液的部分亚硝化作用;间歇阶段与连续曝气稳定期的氨氮、COD、TIN去除率、NO2--N生成率分别为84.51%、66.97%、66.12%、16.84%与74.40%、53.31%、37.74%、36.22%。连续曝气能提高氨氮处理负荷,间歇曝气能产生更多以异养反硝化作用为主的氮损失。固定时间运行SBR亚硝化系统控制使出水m(NO2--N)/m(NH4+-N)波动较大。连续曝气稳定期的NO2--N污泥转化负荷率(m(NO2--N)/[m(VSS).t])为55.7 g/(kg.d),是间歇曝气阶段的6倍左右。Partial nitritation of mature landfill leachate was investigated under two kinds of aeration strategies that include intermittent （airon/off 1.5 min/ 0.7 min） and continuous aeration. The results show that partial nitritation can be both achieved under intermittent and continuous aeration. During intermittent and stable stage in continuous aeration, the removal efficiencies of ammonia nitrogen, COD, TIN and generation rates of NOE--N were 84.51%, 66.97%, 66.12%, 16.84% and 74.40%, 53.31%, 37.74%, 36.22%, respectively. Intermittent aeration can lead to more nitrogen loss due to heterotrophic denitfification. Continuous aeration can improve the treatment loading rate of landfill leachate. The fixed-time control SBR partial nitrification control system makes the value of m（NO/-N）/m（NH4＋-N） fluctuated, The specific nitrite nitrogen conversion rate during the steady stage in continuous aeration is 55.7 g/（kg-d）, which is about 6 times of that of the intermittent aeration.

关 键 词：老龄垃圾渗滤液 部分亚硝化 反硝化 颗粒污泥 SBR 

分 类 号：X703.1[环境科学与工程—环境工程]