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.
出处
《中国给水排水》
CAS
CSCD
北大核心
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)
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
source
SBR municipal wastewater
simultaneous nitrification and denitrification
carbon
