气浮法处理聚合物驱采油废水的影响因素

Influencing Factors of Air-Flotation Process for Treatment of Polymer Flooding Oil-Extraction Wastewater

该文采用气浮技术处理模拟LD10—1油区聚合物驱采油废水。测定了处理水样的含油量、浊度，考察了清水剂的种类、清水剂的投加量、曝气时间、进气流量以及进水的初始含油量对处理效果的影响。结果表明处理含聚合物为200mg／／L、含油量≤173．5mg／L的模拟LD10-1地层水，投加100mg／L混凝剂PAC（合氯化铝），使用80～100μm曝气头，控制进气流量为6．0L／min，累积曝气时间为20min，气浮法的除油率≥72．4％，去浊率≥52．7％。

Air-flotation process to treat LD10-1 oilfield polymer-flooding wastewater was introduced. 0il content and turbidity of wastewater sample were detected. Influence factors of treatment effect such as type of dewater agents, inventory of these agents, aera- tion time, air intake flow and initial oil content of wastewater was also discussed. Results show when dosage of PAC is 100 mg/L, aperture of the aerator is 80-100 I-~m, aeration time is 20 min and air intake flow is 6.0 L/min, oil removal rate is no less than 72.4 % and turbidity removal rate is no less than 52.7 % in initial wastewater with 200 mg/L polymer content and no more than 173.5 mg/L oil content.