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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。
With the gradual increase of oil production wastewater and the increasingly stringent emission standards, it is necessary to find an economical and efficient treatment method. Iron-carbon micro-electrolysis technology was used to treat the wastewater from Jidong Oilfield. The effects of iron particle size, pH value, mass ratio of Fe / C and reaction time on COD removal efficiency were investigated and orthogonal experiments were designed. The results showed that the primary and secondary factors affecting the microelectrolysis process were: pH> Fe / C The optimal conditions were pH = 5, Fe / C mass ratio 7:1, reaction time 50 min, COD of the raw water decreased from 170 mg / L to 95.6 mg / L, the removal rate reached 43.85% Effluent to meet the national secondary emission standards.