聚醚砜超滤膜处理油田采出水试验研究

摘要

By operation of hollow fiber ultrafiltration membrane module to treat produced water, the water quality of effluent met the affusion criteria and the influent target of NF/RO, but SDI15 exceeded 3.0.For treatment turbidity and bacteria, the removal effect of PES ultrafiltration membrane was good.In chemical cleaning process, surfactant and alkaline were used to obtain the optimum cleaning effect.%采用聚醚砜中空纤维超滤膜组件处理油田采出水,探讨了超滤用于油田回注水处理和采出水回用预处理效果.结果表明:聚醚砜超滤膜产水通量较高,处理水中石油类、悬浮物及其粒径中值均达到回注水的标准,浊度、TGB和IB细菌的去除率分别达100%、99%、99%.采用碱+表面活性剂复合药剂清洗可获得最佳的通量恢复.由于采出水中较高的H2S和COD含量,超滤产水的SDI15>3.0,超出后续纳滤/反渗透膜系统的进水要求.