管道混凝/超滤工艺深度处理回用水的中试研究

In-line Coagulation/Ultrafiltration Process for Advanced Treatment of Reclaimed Water

采用管道混凝/超滤组合工艺深度处理回用水,考察了其处理效能及影响因素。结果表明,在相同条件下FeC l3的混凝效果优于PAC的;组合工艺对CODMn和UV254的去除率均随混凝剂FeC l3的投量及混凝时间的增加而增大;组合工艺深度处理回用水的最佳工况:膜通量为64L/(m2.h)、混凝剂FeC l3投量为7 mg/L、混凝时间为100 s,此时对浊度、CODMn和UV254的去除率分别可达84.1%、28.6%和52.4%。

The in-line coagulation/uhrafihration process was adopted for advanced treatment of re- claimed water, and the treatment efficiency and influence factors were investigated. The results show that the coagulation effect of FeCl3 is better than that of PAC under the same conditions. The removal rates of CODMn and UV254 increase with increasing FeCl3 dosage and coagulation time. The optimum conditions of the combined process are the membrane flux of 64 L/（ m2· h） , FeCl3 dosage of 7 mg/L and the coagula- tion time of 100 s. Under these conditions, the removal rates of turbidity, CODMn and UV254 are 84.1% 28.6% and 52.4% respectively.