摘要：

对A/O-MBR工艺处理高COD、高氨氮餐厨废水进行了研究。结果表明，在为期140 d的运行过程中，出水平均COD、NH₄⁺-N、TN分别为277、2.16、271 mg/L，平均去除率分别达到95.68%、99.78%、79.43%；当硝化液回流比为300%，反应器进水补充甲醇作为碳源时，出水平均COD、NH₄⁺-N、TN分别为275、2.10、71 mg/L，平均去除率分别达到95.35%、99.77%、95.01%；当污泥质量浓度维持在9~13 g/L时，可减缓膜污染的速度，TMP的增长较为缓慢。

关键词: A/O, 膜生物反应器, 高氨氮餐厨废水, 脱氮

Abstract:

Research on the A/O-MBR technology used for treating food wastewater with high COD and high ammonia-nitrogen has been accomplished. The results indicates that in a 140 d operation process,the average effluent COD,NH₄⁺-N and TN are 277,2.16 and 271 mg/L, respectively,and the average removing rates reach 95.68%,99.78% and 79.43%,respectively. The average effluent COD,NH₄⁺-N and TN are 275,2.10 and 71 mg/L,respectively and the average removing rates reach 95.35%,99.77% and 95.01%,respectively,when the nitrification liquid return ratio is 300% and CH₃OH is added to the reactor influent as carbon source. When the mass concentration of sludge keeps at 9-13 g/L,the speed of membrane fouling could be slowed down,and the increase of TMP is slower.

Key words: A/O, membrane bio-reactor, food wastewater with high ammonia-nitrogen, denitrification

中图分类号: 

• X703