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气田水矿化度通常为几万至十余万mg/L,CODCr 值一般在500mg/L左右，由于采气过程中各种油田化学剂的使用，可使CORCr值高达数千mg/L。文章以川中角53井气田水为研究对象，实验研究了高CODCr值气田水的处理方法，首次将微电解技术用于气田水的处理，采用凝析沉降－微电解－氧化－吸附工艺处理高CODCr值气田水，并筛选出最佳工艺条件。实验结果表明，该法可使原水CODCr值从1567mg/L降至150mg/L以下，出水各项指标均达到排放标准。

Disposing of High CODCr Gas Field Water with the Process of Coagulating Sedimentation-Microelectrolysis-Oxidation-Adsorption

The salinities of gas field water are commonly several ten thousand to more than ten thousand milligrams per liter and COD_ Cr values about 500 mg/L.Sometimes the latter may be up to thousands of milligrams per liter because of utilizing various oil-field chemical additives in the process of gas production.By taking the gas field water in well Jiao-53 in Central Sichuan as a research target,the disposal method of high COD_ Cr gas field water was studied in laboratory;the microelectrolytic technique was first used for disposing of gas field water;and a technological process of coagulating sedimentation-microelectrolysis-oxidation-adsorption was adopted for disposing the high COD_ Cr gas field water and its optimal technological condition was selected.The experimental results show that the COD_ Cr values may be reduced from 1 567 mg/L to <141 mg/L and the discharge standards of various criteria of the disposed-of gas field water can be all met by use of such a method.