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化工学报  2015 

环流气浮法处理含油水体工艺

DOI: 10.11949/j.issn.0438-1157.20141320, PP. 605-611

Keywords: 浮选,环流浮选柱,分离,废水,工艺条件

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Abstract:

工业生产中会产生大量结构稳定的含油废水,将环流的概念引入传统的空桶式柱气浮工艺来处理含油水体,以克服空桶式浮选柱液体停留时间短、碰撞效率低的缺点,达到提高油水分离效果、深度净化水体的目的。实验中以超声乳化柴油水溶液作为原料,优选出适合本体系的气浮药剂二甲基二烯丙基氯化铵/丙烯酰胺共聚物(PDA),考察了环流气浮法中各工艺条件的影响。结果表明,当气体流量为250L·h-1,液体流量为10L·h-1,液位高度为6cm,PDA用量为20mg·L-1时,气浮效果最好,最高除油率可达90.48%。对比相同工艺条件下的空桶式柱气浮法,除油效率提高了10%以上,且气浮速度更快,具有很高的工业应用价值。

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