处理采油废水最佳絮凝剂的筛选及应用条件研究  

Screening and Application Conditions of Optimal Flocculant for Oilfield Wastewater Treatment

作　　者：方新磊[1] 李定龙[1] 李习伟 赵庆婕 缪建成[2] 陈毅忠[1] 徐冉[1] 

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164 [2]江苏油田试采二厂,江苏金湖211600

出　　处：《安全与环境工程》2016年第2期39-44,共6页Safety and Environmental Engineering

基　　金：江苏油田试采二厂科研攻关专项项目(ZC0609-0001)

摘　　要：通过絮凝-沉淀法对采油废水进行深度处理,类比聚合氯化铝(PAC)、聚合氯化铝铁(PAFC)、聚合硫酸铝(PAS)、聚合硫酸铝铁(PAFS)、复合高分子絮凝剂(KD-11C)和生物絮凝剂6种絮凝剂对采油废水中含油量和悬浮固体(SS)含量的去除效果,通过单因素试验探究絮凝剂投加量、助凝剂投加量、温度、pH值和沉淀时间对絮凝效果的影响,并通过正交试验确定各因素影响程度的次序及最佳絮凝处理条件。结果表明:复合高分子絮凝剂絮凝效果最好;影响絮凝效果各因素的次序为温度>pH值>絮凝剂投加量>助凝剂投加量>沉淀时间;最佳絮凝处理条件是絮凝剂KD-11C投加量为50mg/L、助凝剂PAM投加量为3mg/L、温度为60℃、pH值为7.5、沉淀时间为30min。This paper applies a flocculation-sedimentation method to treat the oilfiled wastewater,and compares six flocculants including polyaluminium chloride（PAC）,polyaluminium chloride（PAFC）,polymer aluminum sulfate（PAS）,polymer aluminum sulfate iron（PAFS）,composite polymer flocculant KD-11 C and biological flocculants with each other for their oil content and suspended solid（SS）content removal efficiency.Then,the paper applies single factor experiment to explore the impact of the dosage of flocculant,the dosage of flocculant aids,temperature,pH and sedimentation time on flocculation,and determines the influence order of various factors and the optimal processing conditions of flocculation through the orthogonal experiment.The experimental results show that composite polymer flocculant is the best flocculant for the wastewater treatment,and the influence order of the factors on the flocculation is temperaturepH valuethe dosage of flocculationthe dosage of flocculant aidssedimentation time,and the optimal processing conditions of flocculation are the dosage of flocculant KD-11C45 mg/L,the dosage of flocculant aids PAM 3mg/L,temperature 60℃,pH 7.5and sedimentation time 30 min.

关 键 词：采油废水 絮凝剂筛选 含油量 悬浮固体含量 

分 类 号：X703.1[环境科学与工程—环境工程] X741