Fenton氧化深度处理稠油废水  

Advanced Treatment of Heavy Oil Wastewater by Fenton Oxidation

作　　者：郭训文[1] 汪晓军[1] 

机构地区：[1]华南理工大学环境科学与工程学院,工业聚集区污染控制与生态修复教育部重点实验室,广东广州510006

出　　处：《油田化学》2013年第2期276-279,共4页Oilfield Chemistry

基　　金：国家自然科学基金"一体化臭氧-曝气生物滤池系统去除污染物方法与机理研究"(项目编号51078149)

摘　　要：针对稠油废水成分复杂、可生化性差、毒性大,使用常规处理方法难以使出水COD达标排放的问题,采用Fenton氧化对其进行深度处理。探讨了H_2O_2和Fe^(2+)投加量、废水初始pH值、反应时间、药剂投加方式对稠油废水COD去除效果的影响。结果表明:在摩尔比n(H_2O_2):n(Fe^(2-))=1:1、质量比m(H_2O_2):m(COD)=1:1、反应时间2 h、废水初始pH=3、反应温度18～20℃、一次性投加药剂的条件下,废水COD去除率为74.2%,出水COD值为58.9mg/L,完全满足油田废水达标排放的要求。在药剂投加总量相同的情况下,相比一次性投加,分两次或三次投加药剂可降低COD值。Advanced treatment of Fenton oxidation was used to treat heavy oil wastewater which was hard to make effluent COD meet the discharge standard by conventional treatments due to its complexity, poor biodegradability and great toxicity. The effects on COD removal by dosages of H2O2 and Fe^2＋, oxidation time, pH value and dosing mode were studied. Experiment results showed that under the operating conditions with 1：1 mole ratio of H2O2：Fe^2＋, 1：1 mass ratio of H2O2：COD, 2 h oxidation time, 3 initial pH value, 18-20℃ reaction temperature and adding chemicals once for all, the removal efficiency of COD was higher than 74% and effluent COD was of 58.9 mg/L, which could meet the discharge standard completely. In addition, increasing of addition times of reagents could improve the removal of COD in wastewater.

关 键 词：FENTON氧化 稠油废水 深度处理 化学需氧量(COD) 

分 类 号：TE992.2[石油与天然气工程—石油机械设备] X703[环境科学与工程—环境工程]