絮体改质剂对清水剂处理油田含聚污水效果的影响

Effects of floc modifiers on treatment of oilfield polymer-containing wastewater using water clarifier

分别以胺基质子型离子液体(PIL)、非离子有机胺聚氧乙烯聚氧丙烯醚(NAPPE)、增效氧化剂(AO)、低分子量阴离子聚合物(AP)为絮体改质剂,考察絮体改质剂对大分子聚季铵盐(CWC)清水剂处理海上油田含聚污水的絮凝效果及絮体性质的影响。实验结果表明:PIL和AO对絮凝速率、絮凝起效时间、絮体层厚度无影响,可部分改善絮体黏附性;NAPPE虽可有效改善絮体黏附性,但影响清水剂絮凝效果,絮凝速率;相比较而言,当AP加入量为100 mg/L、CWC加入量为300 mg/L时,AP对清水剂絮凝速率和絮凝起效时间影响小,且水色清澈,可有效避免黏性油泥问题。

Using polymeric ionic liquid （PIL）, non-ionic amine-initiated polyoxyethylene polyoxypropylene ether （NAPPE）, oxidized agent （AO） and low-molecular-weight anionic polymer （AP） as floc modifier, the flocculation effects of cationic water clarifier （CWC） to the process polymer-containing wastewater in offshore oilfield and properties of the formed flocs were studied. The experimental results show that： PIL and AO has no effect on flocculation rate, effective time and thickness of floc blanket, but can partially reduce fioc adhesion; Although NAPPE can improve fioc adhesion, but it shows adverse effects on flocculation and floccolation rate; In contrast, when 100 mg/L AP and 300 mg/L CWC are used, the problem of viscous oily sludge can be successfully avoided with appropriate flocculation rate and effective time, and the effluent is clear.