水中氨氮含量对活性污泥性能的影响

污泥起始质量浓度为1500，2000，2500mg/L时，增大水中氨氮负荷（其它条件保持不变）来考察其对活性污泥系统的冲击．氨氮的冲击实验中活性污泥性能的变化：控制氨氮质量浓度在0．20mg/L条件下，氨氮的去除率在61％～65％之间，出水氨氮在6．9—7．8mg/L之间，对活性污泥的冲击很小．随着氨氮质量浓度从20mg/L提高到60mg／L的过程中，氨氮的去除效率降低到35％～45％之间，对活性污泥系统有一定的冲击，但系统运转正常．在质量浓度达到80mg/L时，出水pH值在8．0左右波动，系统内生物受到强烈的冲击，连续运行不可恢复．

Research on Influence Caused by Oil to the Performance of Activated Sludge

The capacity of oil was increased to form the impact on the avctivated sludge system when the starting sludge concentration were 1 500,2 000,2 500 mg/L.When the oil concentration was 10 mg/L,the impact on the performance of avctivated sludge was faint;When it was 15 mg/L,The avctivated sludge system was impacted in a degree,but the performance of avctivated sludge was not changed greatly and the system could circulate normally.The avctivated sludge system was impacted obviously when the oil concentration was 20 mg/L.When it was 30 mg/L,the avctivated sludge system was impacted consumingly and continuous circulating couldn't be got back.