电解法处理高含氯离子油田污水

HIGH CHLORIDE ION OIL-FIELD PRODUCED WATER TREATED WITH ELECTROLYSIS

应用自己研制的电解反应设施，对川中油气勘探开发公司生产分离后的现场污水进行了电解试验，对电流密度、电解时间等工艺条件进行了分析，并用密封法测定COD（化学需氧量）值。实验结果表明：从降低Cl^-浓度、降低COD值以及吸光度方面综合考虑，电流密度为1～2A，电解时间为30～90min为处理高含氯离子污水的最佳条件。采用混凝絮凝-电解法联用技术处理高含氯离子污水，具有工艺流程简单、污染小、投资少、效果好的优点，可以达到使污水的COD值减小、氯离子浓度降低的效果。

By using self-made electrolytic reactor,the field produced water of the Central Sichuan Oil and Gas Exploratory Development Corporation is electrolyzed to make investigation of process conditions regarding current density and electrolytic time,etc,and the COD value of the water is measured by sealing method.Based on an overall consideration of reducing the concentration of chloride ion,reducing the COD value and absorbency,the optimal condition of treating high chloride ion produced water is that current density should be controlled in the range of 1A to 2A and the electrolytic time in the range of 30mins to 90mins.Using this technique to treat high chloride ion,the process is simple,the pollution is little,the investment is low while the result is excellent.