铁炭微电解工艺处理采油废水的研究

随着采油废水产生量的逐渐增大以及排放标准的日益严格,寻找一种经济、高效的处理方法显得十分必要。采用铁炭微电解技术对冀东油田采油废水进行了处理。考察了铁屑粒径、pH值、Fe/C质量比和反应时间对COD去除率的影响并设计了正交实验,结果表明,影响微电解工艺的因素主次关系为:pH>Fe/C质量比>反应时间,在最佳条件pH=5,Fe/C质量比为7∶1,反应时间50 min下,原水COD由170 mg/L降至95.6 mg/L,去除率达43.85%,出水满足国家二级排放标准。

Study on treatment of oilfield wastewater by iron-carbon micro electrolysis process

With the increase of oilfield wastewater and the increasingly strict requirement of discharge standard,it is necessary to search for an economical and efficient treatment method to achieve standard discharge.Iron-carbon micro electrolysis technology used to treat Ji Dong Oilfield wastewater was studied.The factors that affect the COD removal efficiency including particle size of iron scale,pH,Fe/C mass ratio and retention time were analyzed.Orthogonal experiments were also carried out to determine the order of different factors and optimal conditions as follows: pH> Fe/C mass ratio > retention time;pH=5,Fe/C mass ratio=7∶ 1,retention time=50 min.Under optimum conditions,COD removal efficiency was 43.85% and the effluent water met the second class national wastewater discharge standard.