催化氧化法治理钻井废水的研究

STUDY ON DISPOSURE OF DRILLING-WASTED WATER WITH CATALIZING AND OXIDIZING

钻井废水是油气田开发过程中的一个重要污染源 ,因其具有污染物成分复杂 ,分布广等特点 ,对周围环境有很大的影响。以充30 #的钻井废水为处理对象 ,实验研究了类Fenton试剂催化氧化法处理工艺 ,考察了Fenton试剂投加量、反应条件、反应时间等单因数对处理效果的影响,实验确定了该处理工艺的最佳操作条件为 :H2O2为2500mg/L ,Fe2SO4·7H2O为70mg/L ,pH值为3.5 ,反应时间为80min,氧气的通入量为70min。废水中的主要污染物指标COD的去除率大于80 %

It is an important and contaminative source of the process of oilfield development,because of its pollutant composition complicacy,the wide region,so it influence surroundings environment very bigly.The mechanisms of affecting factors in treating toxic organic wastewater such as Chong30#oilfield produced water by Fenton reagent were preliminarily investigated.The optimal operating conditions determined by orthogonal experiments are as following:H 2 O 2 =2500mg/L,FeSO 4 ·7H 2 O=70mg/L,80min and pH=3.5,70min of leading the oxygen.Under these conditions,the COD removal is over80%for most experiments.