页岩气采出水中小分子有机物的深度处理
Advanced treatment of small molecular organic in shale gas produced water
胡君杰 1黄兴俊 1雷成 1杨敏 1兰元宵 1罗建洪2
作者信息
- 1. 成都硕特科技股份有限公司,四川 成都 610000
- 2. 四川大学化学工程学院,四川 成都 610000
- 折叠
摘要
页岩气采出水中小分子有机物通过反渗透膜处理往往也难以达标,为了解决这一问题,研究对比了臭氧催化氧化、活性炭吸附、臭氧催化耦合活性炭吸附三种工艺处理页岩气采出水的效果,考察了前两个工艺对采出水中小分子有机物深度处理的影响因素及耦合工艺的处理效果,结果表明:臭氧催化氧化工艺在pH为8左右、反应时间120min、臭氧投加量0.8g/L的最佳反应条件下,臭氧消耗量m(O3)∶m(CODCr)=3.58,CODCr从143mg/L降低至68.6mg/L,去除率52.03%.活性炭吸附工艺在pH为8左右、反应时间90min、活性炭填充比30%的最佳反应条件下,CODCr从143mg/L降低至103.2mg/L,去除率只有27.83%.臭氧催化耦合活性炭工艺在最佳反应条件下臭氧消耗量m(O3)∶m(CODCr)=2.78～2.88,CODCr从143mg/L稳定降低至25～34mg/L,去除率在76.2%～82.5%,可见臭氧催化耦合活性炭工艺对小分子有机物的处理效果最好.
Abstract
The treatment of small molecular organic matter in shale gas produced water by reverse osmosis membrane is often difficult to reach the standard.In order to solve this problem,three processes of ozone catalytic oxidation,activated carbon adsorption and catalytic ozonation coupled activated carbon adsorption were studied and compared in terms of the treatment effect of shale gas production water.The influencing factors in the first two processes on the advanced treatment of small molecular organic matter in shale gas produced water and the treatment effects of the coupling process were investigated.The results showed that using the ozone catalytic oxidation process under the optimal reaction conditions of pH 8,reaction time 120min and ozone dosage 0.8g/L,the ozone consumption m(O3)∶m(CODCr)is 3.58,the CODCr decreased from 143mg/L to 68.6mg/L,and the removal rate was 52.03%.Using the activated carbon adsorption process under the optimal reaction conditions of pH 8,reaction time 90min and filling ratio of activated carbon 30%,the CODCr decreased from 143mg/L to 103.2mg/L,and the removal rate was only 27.83%.Using catalytic ozonation coupled activated carbon adsorption process under the optimal reaction conditions,the ozone consumption m(O3)∶m(CODCr)was 2.78-2.88,the CODCr decreased steadily from 143mg/L to 25-34mg/L,and the removal rate was between 76.2%and 82.5%.It could be seen that the catalytic ozonation coupled activated carbon adsorption process had the best treatment effect on small molecular organic matter.
关键词
页岩气采出水/小分子/臭氧催化氧化/吸附Key words
shale gas produced water/small molecule/ozone catalytic oxidation/adsorption引用本文复制引用
基金项目
四川省中小企业发展专项技术创新项目(2022)(2022CX0129)
出版年
2024
国家科技期刊平台
NSTL
万方数据