改进AB工艺脱氮除磷功能试验研究

试验采用一种改进AB工艺 ,旨在提高传统AB工艺城市污水处理厂的氮、磷去除效果。平行对比试验的结果表明 :在不扩充池容的情况下 ,仅在传统AB工艺基础上进行简单的调整 ,改进AB工艺可以较好地缓解传统AB工艺在生物脱氮除磷过程中存在的碳源相对不足问题 ;在保持有机物高效去除的前提下 ,与传统AB工艺、间歇曝气工艺相比较 ,改进AB工艺的TN、TP去除率显著提高 ,分别达到 79 8%和 90 6 1% ,出水CODCr、TN和TP等各项污染指标均能实现达标排放。

RESEARCH ON THE NITROGEN AND PHOSPHORUS REMOVAL OF THE MODIFIED AB PROCESS

A modified AB process was studied for solving the carbon resource shortage problem in order to improve the nitrogen and phosphorus removal efficiency of the AB process.The results of the parallel bench-scale experiment showed that the nitrogen removal and phosphorus removal efficiencies of the modified AB process reached 79.8% and 90.61% respectively without losing organic removal performance and adding aeration volume,which improved greatly compard with the traditional AB process and intermittent aeration process.The COD Cr ,TN and TP concentrations meet the National Wastewater Integrated Discharge Standard.