DO对好氧颗粒污泥短程同步硝化反硝化脱氮的影响  

Effect of DO on nitrogen removal process by granular sludge in shortened simultaneous nitrification and denitrification

作　　者：张朝升[1] 章文菁[1] 方茜[1] 张可方[1] 

机构地区：[1]广州大学土木工程学院,广州510006

出　　处：《环境工程学报》2009年第3期413-416,共4页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(50878058);广东省自然科学基金资助项目(8151009101000015);广州市教委科技计划项目(62018)

摘　　要：以模拟城市污水为处理对象，研究了不同溶解氧下序批式活性污泥反应器（SBR）的短程同步硝化反硝化过程特征及处理效果。试验结果表明，溶解氧浓度是实现短程同步硝化反硝化的一个重要控制参数。在亚氮积累阶段，控制温度为28～32℃，pH值为7．5～7．8，当进水NH4^＋—N为30mg／L左右，COD为250mg／L左右时，亚硝酸盐氮的积累率达到96％～98％。在试验阶段，常温下控制溶解氧在0．5～1．0mg／L，可保证氨氮的去除率达到95％～97％，总氮的去除率达到82％～85％。The study was made on the process parameters and treatment effect of shortened simultaneous nitrification and denitrification in SBR at different DO concentrations while treating synthetic municipal wastewater. The results showed that DO is one of the most important controlling parameters for realizing shortened simultaneous nitrification and denitrifieation. When NH4^＋-N is 30 mg/L and COD is 250 mg/L, controlling temperature within 28 -32 ℃ , the accumulation rate of NO2^- -N can reach 96% -98% at accumulation of shortened simultaneous nitrification and denitrification. In testing process, the removal rates of NH4^＋-N and TN can arrive at 95% 97% and 82% - 85% by controlling DO concentrations within 0.5 - 1.0 mg/L at room temperature.

关 键 词：序批式活性污泥法(SBR) 颗粒污泥 溶解氧 短程同步硝化反硝化 

分 类 号：X703.1[环境科学与工程—环境工程]