地表漫流系统处理含油废水的机理初探

A PRELIMINARY STUDY ON MECHANISMS OF OIL WASTE WATER TKEATMENT IN LAND OVERFLOW SYSTEM

通过对西北地区某机务段含油废水采用地表漫流处理系统模拟实验和现场中试结果的分析表明，地表漫流处理含油废水是有效可行的；系统对含油废水的处理机理是一个综合复杂的物理、化学及生物反应过程；废水中油的最终去除途径主要是微生物降解，蒸腾和挥发亦能去除部分油。从长远观点看，选择适当的废水投配率和投配周期不会产生系统土壤中油的积累。

After the tests and field simulating experiments of land overflow system for the treatment ofoil waste water at a maintenance workshop in Northwest China,the results obtained show that oilwaste water treatment in land overflow system is effective and feasible.The treatment mecha-nisms of oil waste water by the system are synthetic,complicated processes including physical,chemical and biological reactions,The final removal of oil in waste water is chiefly due tobiodegradation while transpiration and evaporation can clean up a part of oil as well.From a long─term point of oil accumulation in the soil of the system will not occur if the selections of wastewater distribution rate and period are reasonable.