CAJ | 학술논문

油水分离对于采油、炼油以及含油废水的处理有着重要的意义。采用喷涂-高温塑化的方法，在400目不锈钢网上复合PPS(聚苯硫醚)- PTFE (聚四氟乙烯)涂层，构造微米级细长纤维结构，形成了一种复合涂层网膜。该网膜具有良好的疏水性和亲油性，最大孔径＜10μm，对乳化液具有破乳分离的功能。考察了渗透通量以及水包油型乳化液破乳分离效果的影响因素。实验结果表明这种膜对水包油型乳化液具有良好的分离效果，在0.4 mm 膜厚下，压力小于70 kPa时，水中的含油量小于10 mg?L?1。渗透通量随压力的升高而增加，膜厚对其也有一定影响，但操作压力太高、膜的面层厚度太薄均不利于分离，料液初始浓度对破乳分离的影响则不太大。
유수분리대우채유、련유이급함유폐수적처리유착중요적의의。채용분도-고온소화적방법，재400목불수강망상복합PPS(취분류미)- PTFE (취사불을희)도층，구조미미급세장섬유결구，형성료일충복합도층망막。해망막구유량호적소수성화친유성，최대공경＜10μm，대유화액구유파유분리적공능。고찰료삼투통량이급수포유형유화액파유분리효과적영향인소。실험결과표명저충막대수포유형유화액구유량호적분리효과，재0.4 mm 막후하，압력소우70 kPa시，수중적함유량소우10 mg?L?1。삼투통량수압력적승고이증가，막후대기야유일정영향，단조작압력태고、막적면층후도태박균불리우분리，료액초시농도대파유분리적영향칙불태대。
Oil-water separation is of great significance for oil mining and refining, and for the treatment of oily wastewater. A new type of microporous membrane used for oil-water emulsion separation was prepared by a spray-plasticizing method. The composite PPS-PTFE coating layer was first deposited on the 400 mesh stainless steel screen and a micron thin fiber structure was then fabricated on top of the composite layer. The prepared membrane has a maximum pore diameter of less than 10μm and demonstrates excellent hydrophobic and oleophilic properties, which may be used for oil-water emulsion separation. The result of the experiment shows that this membrane is great for the oil-water separation. When the thickness of the membrane is about 0.4 mm and the pressure difference is below 70 kPa, the content of oil in water after separation is less than 10 mg?L?1. Effects of the operating pressure difference, the membrane thickness and emulsion composition on the membrane permeation flux and separation factors were investigated. It was found that, increasing operating pressure difference and reducing membrane thickness have negative effect on the separation of oil-water emulsions, while the primary oil concentration of the emulsion has less significant effect.