某煤化工废水中多环芳烃的测定分析及吸附处理

Determination and adsorption treatment of polycyclic aromatic hydrocarbons in a coal chemical wastewater

采用固相萃取-高效液相色谱法对废水中的多环芳烃进行分析。经过预处理及正确的步骤操作后,16种多环芳烃能够有效富集并进行分离检测。16种多环芳烃的总量达到了4.635μg/L,总体不超标,说明此煤化工企业生化后的水样相对稳定,但是部分多环芳烃的单体含量超过了排放标准,需要进行进一步的处理。经四种吸附剂吸附处理后,总体去除率分别达到了80.7%,52.4%,68.9%,58.8%,总量大大降低,效果良好,尤其是NDA-150树脂的吸附效果更好。

The polycyclic aromatic hydrocarbons(PAHs)in wastewater were analyzed by solid phase extraction and high performance liquid chromatography(HPLC).After pretreatment and correct operation,16 PAHs can be effectively enriched and separated.The total amount of 16 kinds of PAHs reached 4.635 ug/L,which generally did not exceed the standard,indicating that the biochemical water samples in this coal chemical enterprise were relatively stable,but the monomer content of some PAHs exceeded the emission standard,indicating that further treatment was needed.After four kinds of adsorbents were adsorbed,the total removal rates were 80.7%,52.4%,68.9%,58.8%,respectively.The total amount was greatly reduced,and the effect was good,especially the adsorption effect of NDA-150 resin was better.