倒置A2/O系统中碳、氮、磷的物料平衡分析

摘要

Based on the analysis on carbon, nitrogen and phosphorus in each biological treatment unit and the secondary sedimentation tank of the inverted A2/O process in a municipal sewage treatment plant, a mass balance formula was established; the material flow of carbon, nitrogen and phosphorus were researched, and the removal efficiency of nitrogen and phosphorus were analysed.The results showed that the simultaneous nitrification and denitrification was existed in aerobic pool and less aeration can not only improve the removal efficiency of nitrogen and phosphorus but also save energy.%通过对以倒置A2/O工艺运行的某城市污水处理厂各生物处理单元及二沉池中碳,氮、磷等指标的分析,建立了物料平衡公式,研究了该工艺碳、氮,磷等物料的流向,并在物料平衡的基础上对各单元的脱氮除磷效率进行分析,结果表明:在好氧池中存在同时硝化反硝化现象;减少好氧池的曝气量,既能提高脱氮除磷效率,又能节约能源.