污泥龄对SBR处理含HA和Cu2+废水的影响

摘要

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.%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％。