摘要
分析SBR系统处理城市污水的主要工艺参数及其对脱氮效果的影响。试验了多种运行控制方式,结果表明:①运行周期6 h,SBR即可较好地完成污水有机物氧化和同时脱氮;将闲置阶段设置在进水和曝气两阶段之间,可大幅度提高TN的去除率。②闲置时间会影响脱氮效果,最佳闲置时间为30 min;增加污泥负荷,可提高TN的去除率,但会降低NH3-N的硝化效果。
The main process parameters and their effects on biological nitrogen removal in an Sequencing Batch Reactor （SBR） system treating municipal sewage were studied. Various operating modes were tested and the following conclusions could be drawn： （1） When the operation period was six hours, nitrogen removal and organic oxidation could be accomplished readily, and the removal rate of TN increased greatly when the idling process was set between inttuent and aeration. （2） The idling time impacted the nitrogen removal, and the best idling time was 30 minutes. As the sludge load increased, the nitrification of NH4^＋ -N decreased and the removal rate of TN increased.
出处
《水资源保护》
CAS
2009年第4期70-72,81,共4页
Water Resources Protection
