【摘要】 讨论了影响同步硝化反硝化反应的各参数,并进行了单因素实验与正交实验,获得了同步硝化反硝化生物脱氮工艺运行的最佳条件:DO浓度控制在0.5~2 mg/L,COD浓度为600~800 mg/L,混合液悬浮固体(MLSS)为5000 mg/L,pH值在8.0左右,反应时间为6 h。在此条件下,氨氮及COD的去除率都较高,分别达85%和95%,总氮去除率为68.5%。更多还原

【Abstract】 Single factor experiments and orthogonality experiments have been performed to gain an understanding of the conditions and process governing the occurrence of simultaneous nitrification and denitrification(SND).The optimun conditions are as follows: DO=0.5~2.0 mg/L;COD=600~800 mg/L;MLSS=5000 mg/L;pH=8.0 and T=6 h.Under these conditions the removal rates of ammonia and COD reach 85% and 95% respectively and the removal rate of total nitrogen is 68.5%.更多还原