膜基材对动态膜反应器处理效果的研究

STUDY ON THE EFFECT OF SEWAGE TREATMENT BY DYNAMIC MEMBRANE BIOREACTOR WITH DIFFERENT MEMBRANE CARRIER

选用无纺布、锦纶和钢丝网作为动态膜生物反应器的膜基材处理模拟生活污水,并进行对比试验。结果表明,无纺布、锦纶和钢丝网为膜基材试验,在稳定运行80 min后浊度均下降至5 NTU以下,SS已经检测不出,动态膜稳定形成;对COD、TN、NH3-N的平均去除率分别为83.94%、24.09%、82.18%,84.26%、20.85%、79.44%,89.50%、19.75%、78.41%,对TP去除效果不明显;系统具有一定的抗负荷性,其中无纺布抗负荷性较好;通过3种不同的膜通量恢复方法进行对比,无纺布初始膜通量大,膜通量恢复性最好。综合分析,无纺布是最适合做动态膜基材的。

The non-woven,chinlon and stainless steel wire mesh were used as the carrier of dynamic membrane bioreactor,and the comparation experiment of sewage treatment.was carried out.The results showed that the non-woven,chinlon and stainless steel wire mesh can form stable dynamic membrane,basing on a stable operation after 80 min,the turbidity decreased to 5 NTU,SS could not be detected.The average remove rate of COD,TN and NH3-N were 83.94%,24.09%,82.18%;84.26%,20.85%,79.44%;89.50%,19.75%,78.41%,respectively.But TP removing effect was not obvious.The system had a certain resistance to load performance,non-woven was the best.Through three different membrane flux recovery method comparing,non-woven initial membrane flux and membrane flux restorative was the best.Comprehensive analysis,non-woven fabric was the most suitable for dynamic membrane base material.