侧沟式膜泥法一体化OCO工艺中水力停留时间对脱氮除碳的影响  

Influence of hydraulic retention time on nitrogen and carbon removal by side channel integral OCO process with bio-film and activated sludge

作　　者：殷旭东[1,2] 李德豪[1,3] 刘勇弟[3] 凌洪吉[1,2] 高桂枝[2] 

机构地区：[1]茂名学院化工与环境工程学院,茂名525000 [2]南京信息工程大学环境科学与工程学院,南京210044 [3]华东理工大学资源与环境工程学院,上海200237

出　　处：《环境工程学报》2009年第8期1395-1398,共4页Chinese Journal of Environmental Engineering

基　　金：广东省自然科学基金项目(8152500002000012);广东省科技计划项目(2002C32106);广东省教育厅自然科学研究项目(2001-0167)

摘　　要：在传统OCO工艺基础上设计了一体化OCO工艺，在厌氧区放置填料，将二沉池和生物反应器合建，并就水力停留时间（HRT）对生物反应器脱氮除碳的影响进行研究。在进水COD为260～360mg／L，好氧区D0为2mg／L左右，缺氧区〈0．5mg／L，MLSS为4500mg／L左右时，分别研究了不同HRT下的脱氮除碳效果。研究结果表明：随着HRT的逐渐增大，出水COD值无明显波动，COD去除率达到90％以上，出水氨氮随着HRT的增大而降低；但仅当HRT为12h左右时，氨氮和总氮均有良好的去除效果，去除率分别可达到93％和80％。Based on the classic OCO process, a novel integrated OCO process with bio-flim in the anaerobic zone and side channel integral settlement tank was developed. Influences of hydraulic retention time （HRT） on the nitrogen removal were studied when the influent COD was 260 -360 mg/L, DO was more than 2 mg/L in the oxic zone, DO was less than 0.5 mg/L in the anoxic zone, MLSS was about 4 500 mg/L. The results showed that there was no change with the effluent COD obviously, the COD removal rate was more than 90% , the effluent ammonia nitrogen decreased gradually when HRT increased gradually. But only when HRT was 12 h, the ammonia nitrogen and the total nitrogen removal rates were all satisfactory and 93% and 80% respectively.

关 键 词：一体化OCO工艺 水力停留时间 脱氮除碳 

分 类 号：X703[环境科学与工程—环境工程]