超支化聚合物破乳剂HPO-1在强乳化含油污水处理中的应用

Application of hyperbranched polymer demulsifier HPO-1 in the treatment of highly emulsified oily wastewater

为了提高强乳化含油污水的破乳处理效率,以超支化聚乙烯亚胺(HPEI)和复合脂肪酸单体FO-1为主要原料制备了一种超支化聚合物破乳剂HPO-1,采用红外光谱图和核磁1HNMR谱图对其结构进行了表征,评价了其界面活性,考察了破乳剂投加量、温度、沉降时间和污水矿化度对HPO-1破乳效果的影响,并与现场用破乳剂XCP-16S的性能进行了对比。结果表明:HPO-1的界面活性和破乳性能均明显优于XCP-16S,当HPO-1投加量为50 mg/L,温度为30℃,沉降时间为30 min,污水矿化度为8 350 mg/L时,其脱油效率可以达到90.8%,破乳处理后水相中HPO-1的残留量小于0.5 mg/L。HPO-1对海上A油田某采油平台强乳化含油污水的现场破乳处理效果较好,沉降时间大于30 min后,脱油效率即可以达到90%以上。研究结果表明HPO-1能够满足强乳化含油污水快速高效破乳处理的需求。

In order to improve the demulsification efficiency of highly emulsified oily wastewater,a hyperbranched polymer demulsifier HPO-1 was prepared by using hyperbranched polyethyleneimine HPEI and composite fatty acid monomer FO-1 as the main raw materials.Its structure was characterized by infrared spectroscopy and nuclear magnetic resonance 1HNMR spectroscopy.The interfacial activity was evaluated,and the effects of demulsifier dosage,temperature,settling time,and wastewater salinity on the demulsification efficiency of HPO-1 were investigated.The performance of HPO-1 were compared with the on-site demulsifier XCP-16S.The results showed that the interfacial activity and demulsification performance of HPO-1 were significantly superior to XCP-16S.When the dosage of HPO-1 was 50 mg/L,the temperature was 30 ℃,the settling time was 30 minutes,and the salinity of wastewater was 8 350 mg/L,the oil removal efficiency could reach 90.8%,and the residual amount of HPO-1 in the aqueous phase after demulsification treatment was less than 0.5 mg/L.The hyperbranched polymer demulsifier HPO-1 had a good on-site demulsification treatment effect on strongly emulsified oily wastewater from an offshore oil production platform in A Oilfield.After settling time of over 30 minutes,the oil removal efficiency could reach over 90%.The research results showed that hyperbranched polymer demulsifier HPO-1 could meet the demand for fast and efficient demulsification of highly emulsified oily wastewater.