人工潜流湿地处理稠油采出水的实验研究

Study on subsurface-flow wetland system for treating thick oil produced water

人工潜流湿地由 3个面积各为 90 0m2 的芦苇床组成 ,平均布水量分布为 6m3 d、18m3 d和 30m3 d .进水污染物平均浓度为 :COD 40 1 0 8mg L ,BOD531 88mg L ,矿物油 2 4 6 7mg L ,TN 11 6 7mg L .经潜流湿地处理后上述污染物分别减少了COD6 7 2 5 %— 80 77% ,BOD580 0 2 %— 89 0 5 % ,石油类 78 0 0 %— 88 45 % ,TN 75 32 %— 82 43 % .经检测 ,试验期间潜流湿地的渗透率为 0 5 2m d ,在这种条件下潜流湿地的耐冲击负荷强 。

The subsurface\|flow constructed wetland is composed of three beds with area of 900?m\+2 each.The average flows of system at the filtration rate 0 52?m/d are 6?m\+3/d,18?m\+3/d and 30?m\+3/d respectively.The average concentrations of pollutant influent are COD 40108?mg/L,BOD\-5 31 88?mg/L,mineral oil 24 67?mg/L,and TN 11.67?mg/L.Analytical results showed that COD decreased 67.25%—80.77%,BOD\-5 decreased 80.02%—89.05% mineral oil decreased 24.67%,and TN decreased 75.32%—82 43%,It indicates that wetland can provide an efficient and economical treatment system.