Abstract: the research on the treatment project for denitrification mechanism of monosodium glutamate refining wastewater is introduced. A/O technological design has been used in the project. In the determination period,as the influent flux of the project is(1 270±335) m³/d,COD(1 724±897) mg/L,and TKN(93.5±41.5) mg/L,the effluent COD, TKN,and TN are (10.4±5.1),(0.6±0.4),and (7.2±1.5) mg/L,respectively. The average removing rates of COD,TKN and TN are 99.4%,99.4% and 91.7% respectively. It is obtained from the material balance that in the system,the denitrification capacity by anoxic denitrification is 56% of the total denitrification capacity,and the denitrification capacity by simultaneous nitrification-dentrification is 44% of the total denitrification capacity. Further research shows that high-efficient denitrification of the system is because the sludge has high denitrification activity in Tank A,and remarkable simultaneous nitrification-dentrification is occurs in the start part of Tank O.

Key words: monosodium glutamate refining wastewater, A/O process, denitrification mechanisms, simultaneous nitrification-dentrification

摘要： 文章研究了某味精精制废水处理工程的脱氮机理。该工程采用A/O工艺设计，实验测定期间，工程进水流量、COD、总凯氏氮（TKN）分别为（1 270±335）m³/d、（1 724±897）mg/L、（93.5±41.5）mg/L，出水COD、TKN、总氮（TN）分别为（10.4±5.1）、（0.6±0.4）、（7.2±1.5）mg/L，COD、TKN、TN平均去除率分别为99.4%、99.4%、91.7%。实验结果表明：系统高效脱氮是由于A池污泥反硝化活性高和O池前端发生了显著的同时硝化反硝化所致，分别占TN去除总量的56%和44%。

关键词: 味精精制废水, A/O工艺, 脱氮机理, 同时硝化反硝化

CLC Number: 

• X703