【摘要】 根据Dean涡流原理,采用螺旋形中空纤维超滤膜处理洗毛废水。考察了透膜压力、料液温度、料液流速、料液浓度、螺旋形膜的螺距和螺径对膜通量的影响。实验结果表明,Dean涡流对洗毛废水超滤过程有显著的改善作用,在同等条件下,螺旋形膜的膜通量比直形膜的膜通量高1倍以上。螺旋形膜处理洗毛废水较好条件为透膜压力80 kPa,料液流速0.65 m/s,料液温度50℃,料液浓度4.6×104mg/L,螺距10.0 mm,螺径27.3 mm。该条件下,螺旋形膜的膜通量可达85.0 L/(m2.h)。更多还原

【Abstract】 According to the principle of Dean vortices,coiled hollow-fiber ultrafiltration membrane modules were used to treat with wool scouring effluents.The effects of transmembrane pressure,temperature,feed velocity,feed concentration,the pitch and the diameterof the coiled module on the flux of a coiled membrane were investigated.Experimental results showed that compared with a straight module,Dean vortices could enhance the ultrafiltration process of wool scouring effluents observably.and the optimal conditions were transmembrane pressure 80 kPa,feed velocity 0.65 m/s,temperature 50 ℃,feed concentration 4.6×104 mg/L,the pitch of the coiled module 10.0 mm and the diameter of the coiled module 27.3 mm.Under these conditions,85.0 L/(m2·h) flux of the coiled membrane was obtained.更多还原