新型管式动态膜生物反应器及处理垃圾渗滤液的研究

Study of a New Type of Tubular Self-forming Dynamic Membrane Bioreactor and Its Application for Treatment of Landfill Leachate

研究了1种新型玻璃纤维管式动态膜生物反应器(DMBR)并考察其对垃圾渗滤液的处理效果.研究表明,动态膜生物反应器运行稳定,DMBR在重力自流出水下运行近80 d,在过滤压差为2900 Pa的情况下,膜通量维持在3.75 L/(m2.h)左右,在膜组件的结构参数改进之后,膜通量有较大提高,在过滤压差为1450 Pa下能较长时间稳定在6 L/(m2.h).本研究还考察了动态膜的过滤性能和系统处理效果,系统出水浊度在1.0 NTU以下,对COD、BOD5和NH4+-N的平均去除效率分别超过71%、96%和98%,动态膜对混合液上清液COD有19.34%的截留作用.

A new type of fiberglass tubular self-forming dynamic membrane bioreactor （DMBR） and its application for treatment of landfill leachate on laboratory scale were studied. The results showed that the system worked with a average membrane flux 3.75 L/（ m^2 · h）maintained by gravity filtration at a trans-membrane pressure （TMP） of 2 900 Pa for near 80 days. After the modification of membrane module, a higher membrane flux was achieved at a TMP of 1 450 Pa and the membrane flux could be maintained steadily at 6 L/（m^2 ·h）for a long time. At the same time, the formation and filtration performance of dynamic membrane （DM） was tested. The effluent turbidity was blow 1.0 NTU and the average removal of COD, BOD5 and NH4^＋ -N in this system exceeded 71%, 96% and 98% respectively. Moreover, COD removal from the supernatant on an average of 19.34% was made only by the dynamic membrane.