摘要
研究发现阴离子聚丙烯酰胺 (HPAM)对聚合物驱含油污水处理有正反 2方面影响 .聚合物能增加污水粘度 ,降低油珠上浮速度 ,而且聚合物能增加油水界面水膜强度 ,延缓油珠聚并时间 ,这是聚合物对油珠沉降分离的不利影响 ;同时 ,聚丙烯酰胺具有絮凝性 ,能将水中油珠连接到一起 ,有利于油珠聚并 .当聚丙烯酰胺相对分子质量为 2 72× 1 0 6,浓度小于 80 0mg/L时 ,絮凝作用大于粘度作用 ,有利于油珠的沉降分离 .初始油珠粒径小是聚合物驱含油污水难处理的主要原因 .横向流除油器可以加速油珠聚并 ,缩短沉降时间 。
The research found anion polyacrylamide (HPAM) had positive and negative effects on oil water separation. Polymer made oily wastewater's viscosity increase and reduce rising velocity, and polymer can also increase intensity of water films between oil droplets and lengthen coalescence time of oil droplets. Those were not in favor of settling and separation for oil droplets. The positive effects on separation were that polyacrylamide had flocculating activity and made small droplets contact each other and combine into big droplets. When polymer's molecular weight was 2 72×10 6, and concentration was less than 800mg/L, polymer was in favor of oil droplets settling and separation. The prime reason for oily wastewater of polymer flooding difficult to dispose was that initial median diameters of oil droplets were small. The transverse flow oil separator can intensify oil droplets combination and shorten rising time. The locale experiments showed the separator was suitable for dealing with oily wastewater of polymer flooding.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2002年第2期69-72,共4页
Environmental Science
基金
国家"九五"科技攻关项目 (97 317 0 6 0 2 )
关键词
聚丙烯酰胺
聚合物驱
含油污水
沉降分离
横向流除油器
polyacrylamide
polymer flooding
oily wastewater
settling and separation
transverse flow oil separator
