Aiming at the characteristics of oil field sewage ,the electrocoagualation (EC) process was used for the experimental study on preparation of oily waste water .The effects of electrode distance ,initial pH and NaCl content on oil removal rate were analyzed ,respectively ,and the influence parameters were obtained .The flow field experiment was firstly carried out .Then ,the solution was divided into represent-ative of three layers in the vertical direction ,while the changes of oil removal rate under different current density with time were examined ,and the characteristic curves of the three layers with the oil removal rate were compared .The results showed that oil removal rate of A layer was the fastest and best ,while the oil removal effect of B layer was worse than that of C layer .When electrolysis time was 4 min and current density was 150 A /m2 ,the oil removal effect of A layer accounted for 96 .05％ of total efficiency .Consider-ing the average cost and oil removal rate of three layers ,the overall treatment was the best in EC reactor when electrolysis time was 16 min and current density was 100 A /m2 .%针对油田乳化液的水质特性,用电絮凝方法对配制的含油污水进行实验研究.首先分析极板间距 、溶液初始pH值及NaCl含量对除油率的影响,确定实验参数.继而,实验研究电絮凝装置中竖直方向上典型的三层溶液,考察不同电流密度下除油率随时间的变化规律,比较三层除油率的特性曲线.发现A层去除效果最快最好,B层比C层处理效果差.在电解前4 min,电流密度为150 A/m2时,A层除油率占其总效率的96.05％.从平均成本和三层除油率综合判定,电解16 min,电流密度在100 A/m2时,电絮凝装置中整体处理效果最好.
展开▼
