摘要：

以模拟生活污水为对象，研究SRT分别为10、15、20、25 d的情况下，SBR系统对COD、NH₄⁺-N、HA和Cu²⁺的去除效果以及TTC-ETS的变化。试验结果表明：SRT为20 d时，SBR系统处理含有10 mg/L HA和2 mg/L Cu²⁺的模拟生活污水效果较好，此时COD、NH₄⁺-N、HA、Cu²⁺去除率分别为92.65%、99.42%、96.98%、95.55%。SRT的变化并未明显改变TTC-ETS的趋势，呈现出先下降再上升最后下降的变化。与空白组相比，试验组的TTC-ETS受到HA和Cu²⁺的抑制。在单周期内0、2、4、6、8、10 h TTC-ETS的抑制率分别为26.13%、76.39%、79.50%、79.61%、49.59%、39.31%。

关键词: 活性污泥, 污泥龄, 腐殖酸, 含HA和Cu²⁺废水, SBR

Abstract:

Taking simulated domestic sewage as the research target,the influences of SRT system on COD,NH₄⁺-N,HA and Cu²⁺ removing effects and the change of TTC-ETS have been studied,when SRT is under the conditions of 10,15,20,25 d,respectively. The results show that when SRT is 20 d,SBR system has a good removing effect on the simulated domestic sewage containing 10 mg/L of HA and 2 mg/L of Cu²⁺,meanwhile,the removing rates of COD,NH₄⁺-N,HA and Cu²⁺ are 92.65%,99.42%,96.98%,95.55%,respectively. The change of SRT does not significantly change the trend of TTC-ETS,showing the change as declining firstly,rising next,and declining finally. Compared with the blank group,the TTC-ETS in the experiment group has been inhibited by HA and Cu²⁺. The inhibition rates of TTC-ETS in single cycle 0,2,4,6,8,10 h are 26.13%,76.39%,79.50%,79.61%,49.59%,39.31%,respectively.

Key words: activated sludge, sludge age, humic acid, wastewater containing HA and Cu²⁺, SBR

中图分类号: 

• X703.1