辽河油田稀油二元复合驱采出污水絮凝处理研究  

Treatment of polymer-surfactant flooding produced water from thin oil recovery of Liaohe Oilfield by flocculation process

作　　者：周洪义[1] 李润富[1] 赵晓非[2] 

机构地区：[1]中石油辽河油田锦州采油厂,辽宁凌海121209 [2]东北石油大学化学化工学院,黑龙江大庆163318

出　　处：《工业用水与废水》2012年第6期16-19,共4页Industrial Water & Wastewater

基　　金：黑龙江省自然科学基金项目(B200912)

摘　　要：对辽河油田稀油二元复合驱采出污水进行絮凝处理。优选了无机、有机絮凝剂,考察了复配絮凝剂效果及其加药方式对絮凝效果的影响,研究了不同絮凝剂产生的絮体形态。结果表明,优选的无机絮凝剂为聚合氯化铝(PAC),有机絮凝剂为阳离子聚丙烯酰胺(CPAM),其絮凝效果随阳离子度的提高而提高。有机絮凝剂投加量对复配絮凝剂的处理效果影响较大。适宜的复配药剂投加量为PAC 300 mg/L、CPAM-1 4 mg/L,处理后污水SS的质量浓度为10.65 mg/L、油的质量浓度为2.43 mg/L、透光率为84.0%,絮体较致密。最好的加药方式为投加完无机絮凝剂后,立即加入有机絮凝剂。不同的絮凝剂形成的絮体形态不同,复配时CPAM-1的投加量越大,絮体越致密。Using flocculation process to treat polymer-surfactant flooding produced water from thin oil recovery of Liaohe Oilfield, the proper inorganic and organic flocculant were determined; the influences of compounded flocculant and its dosing method on the flocculation effect were investigated; meanwhile, the morphologies of flocs in water samples added with different flocculants were observed using microscope. The results of the test showed that, PAC and CPAM were the optimal inorganic and organic flocculant respectively, and the floeeulation effect of CPAM increased with the increasing of cationic degree. The dosage of organic flocculant could greatly affect the flocculation effect of the compounded floceulant. For the said compounded flocculant, the optimal dosage of PAC and CPAM-1 were 300 and 4 mg/L respectively. After the treatment, the mass concentrations of SS and oil in the sewage were 10.65 and 2.43 mg/L respectively; the light transmittance reached 84.0%, and the flocs was tight. The optimal agent dosing method was： adding organic flocculant immediately after the inorganic floceulant was added. Different floeculants produced various flocs with different morphologies. The larger the CPAM-1 dosage was, the tighter the flocs produced by the compounded floceulant would be.

关 键 词：辽河油田稀油 二元复合驱污水 絮凝处理 

分 类 号：X741.035[环境科学与工程—环境工程]