【摘要】 用一定浓度的缩醛改性聚乙烯醇作铸膜液 ,以不锈钢金属纤维烧结毡作基材 ,制备了用于处理O/W型含油废水乳化液的复合亲水分相膜 .用该金属 -改性PVA亲水分相膜处理含油乳化废水 ,具有操作压力小、处理量大和除油效果好等优点 .用该分相膜处理质量浓度为10 0 0mg/L的模拟含油乳化液 ,在 4 0 0r/min的搅拌速度下 ,当操作压力为 0 5 4kPa时 ,即可获得 2 2 38m3/(m2 ·h)的透液速率 ,除油率可达 99 5 % .研究结果还表明 ,控制一定的操作条件 ,使透液速率不超过临界透液速率是获得高效除油率的关键 ,但此分相膜用于处理含乳化剂的乳化废水时效果不佳更多还原

【Abstract】 The composite hydrophilic membrane was prepared for phase separation of oil-water emulsions by coating the stainless steel fiber sintered membrane with a thin layer of certain concentration of modified polyvinyl alcohol. The membrane has great permeate flux, high oil-removing rate and needs only a little operating pressure for the treatment of oil-water emulsions. The simulating oil-water emulsion in which the oil concentration was 1 000 mg/L was treated by this modified membrane under the operating pressure of 0.54 kPa and the mixing speed of 400 r/min, the permeate flux is 2.238 m 3/(m 2·h), and the oil removing rate is about 99.5%. The results also show that when the permeate flux is not great than the critical permeate flux, the high oil-removing rate can be obtained. But when it is used to treat the O/W emulsions containing surfactant agent, the oil- removing effect is not good.更多还原