CAJ | 학술논문

油田开采过程中剩余压裂液COD值严重超标,给环境带来极大危害,而目前对此类压裂液处理的研究报道甚少.采用标准Fenton试剂处理压裂余液,通过正交实验,确定了Fenton氧化中主要影响因素(H_2O_2投加量、Fe~(2+)投加量、pH值和反应时间)的实验条件,并考察了各因素对COD去除率的影响,确定出最佳反应条件.压裂余液的COD值由2 075.84 mg/L降至500.49 mg/L,去除率达到75.9%.实验结果表明:标准Fenton试剂对压裂余液具有良好的处理效果.
유전개채과정중잉여압렬액COD치엄중초표,급배경대래겁대위해,이목전대차류압렬액처리적연구보도심소.채용표준Fenton시제처리압렬여액,통과정교실험,학정료Fenton양화중주요영향인소(H_2O_2투가량、Fe~(2+)투가량、pH치화반응시간)적실험조건,병고찰료각인소대COD거제솔적영향,학정출최가반응조건.압렬여액적COD치유2 075.84 mg/L강지500.49 mg/L,거제솔체도75.9%.실험결과표명:표준Fenton시제대압렬여액구유량호적처리효과.
In the process of oilfield development, the COD value of residual fracturing fluid exceeds standard seriously, and this will cause great damage to the environment. However, the reports of the treatment of residual fracturing fluid are so far very few. The standard Fenton reagent was used to treat the residual fracturing fluid. The optimal operating conditions such as the dosages of H_2O_2 and Fe~(2+),pH value and treatment time were determined by orthogonal experiments, and the factors that influenced the removal rate of COD were investigated. The optimum reaction conditions were determined finally. The COD value of residual fracturing fluid decreased to 500.49 mg/L from 2075.84 mg/L, and the removal rate reached 75.9%. The experimental results show that the sandard Fenton reagent has an excellent treatment effect.