碳源对SBR工艺同步硝化反硝化的影响  

Effect of Carbon Source on Simultaneous Nitrification and Denitrification of SBR Process

作　　者：杜馨[1] 张可方[1] 方茜[1] 张朝升[1] 

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《中国给水排水》2007年第11期47-51,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(50578044);广东省自然科学基金资助项目(5001870);广东省科技攻关项目(2004B33301006)

摘　　要：以低C/N值的模拟城市污水为处理对象,借助序批式活性污泥反应器(SBR),研究了碳源种类、C/N值及碳源投加方式对同步硝化反硝化的影响。结果表明,在试验条件下,啤酒与淀粉的混合物比乙酸钠、葡萄糖等易降解有机物更适合作为同步硝化反硝化的碳源,且随着C/N值的升高,对总氮的去除率从58.99%(C/N值为3.3∶1时)上升至87%(C/N值为10∶1时);在进水氨氮为30.0 mg/L、总氮为32.2 mg/L、C/N值为6.7∶1及采用间歇投加碳源的条件下,可使出水氨氮、总氮分别降至0.87、1.58 mg/L,对总氮的去除率达到了95%,为相同条件下随进水一次性投加碳源的1.32倍。The influences of carbon sources, C/N ratio and adding modes of carbon source on simultaneous nitrification and denitrification （SND） in a sequencing batch reactor （SBR） were investigated while treating low C/N synthetic municipal wastewater. The results show that under the test condition, the mixture of beer and starch is more appropriate to be used as a carbon source for SND than biodegradable organic matters such as sodium acetate or glucose. When the C/N ratio is increased under the use of beer and starch as carbon source, the TN removal rate rises from 58.99% （C/N = 3.3 ： 1 ） to 87% （C/N = 10 ： 1 ）. When the influent concentration of ammonia nitrogen is 30.0 mg/L, TN is 32.2 mg/L, C/N ratio is 6.7 ： 1 and the carbon source is added intermittently, the effluent concentrations of ammonia nitrogen and TN can be decreased to 0.87 mg/L and 1.58 mg/L respectively. The removal rate of TN can reach 95% , which is 1.32 times higher than a one-time dosage of carbon source in influent under the same condition.

关 键 词：城市污水 同步硝化反硝化 碳源 序批式活性污泥反应器 

分 类 号：X703[环境科学与工程—环境工程]