阻截除油-陶瓷膜组合工艺处理低渗油田采出水试验
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摘要
胜利低渗油田采出水精细处理通常采用钛金属膜工艺,钛金属膜存在易污染、堵塞等问题。针对处理水质无法长期稳定达到行业Ⅰ级注水指标,对钛金属膜污染机理进行了探究。研究结果表明,膜内污染成分主要是石油类污染物、SiO_2、垢及胶体杂质等。因此,对油田采出水提出高效除油+精细过滤两段式处理思路,采用阻截除油-陶瓷膜组合工艺进行处理。现场试验结果表明,出水平均含油量1.1 mg/L,悬浮固体含量0.3 mg/L,悬浮颗粒直径中值181 nm,水质稳定达到行业Ⅰ级指标。
Titanium metal membrane process is commonly used on low permeability oilfield produced water fine treatment which is easy to cause pollution and blockage. Therefore the water quality cannot reach the grade I standard of long-term stability.This paper tries to explored the titanium membrane fouling mechanism, and the research shows that membrane pollution composition is mainly composed of petroleum pollutants and SiO_2,fouling and colloidal impurities.Then aiming at oilfield prodncecl water,efficient oil removal combined with fine filtering concept is put forward and interception membrane-ceramic membrane combined process is adopted on low permeability oilfield sewage treatment.The indoor test results show that,the effluent oil content is 1.1 mg/L,floating suspended solid content is 0.3 mg/L and the particle diameter median is 181 nm,the water quality is stable and achieves gradeⅠindex.
Titanium metal membrane process is commonly used on low permeability oilfield produced water fine treatment which is easy to cause pollution and blockage. Therefore the water quality cannot reach the grade I standard of long-term stability.This paper tries to explored the titanium membrane fouling mechanism, and the research shows that membrane pollution composition is mainly composed of petroleum pollutants and SiO_2,fouling and colloidal impurities.Then aiming at oilfield prodncecl water,efficient oil removal combined with fine filtering concept is put forward and interception membrane-ceramic membrane combined process is adopted on low permeability oilfield sewage treatment.The indoor test results show that,the effluent oil content is 1.1 mg/L,floating suspended solid content is 0.3 mg/L and the particle diameter median is 181 nm,the water quality is stable and achieves gradeⅠindex.
引文
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[7]谭家翔,徐鹏,王胜,等.阻截除油技术在渤西油气处理厂的应用[J].技术与工程应用,2014,23(12):16-19.
[8]丁慧,彭兆阳.无机陶瓷膜处理油田采出水[J].环境工程学报,2013,7(4):1 399-1 404.
[2]曹怀山,姜红,谭云贤,等.胜利油田回注污水处理技术现状及发展趋势[J].油田化学,2009,26(2):218-226.
[3]王伟伟,高学理,徐佳.钛金属膜过滤油田污水的污染阻力研究[J].广东化工,2010,37(11):101-102,116.
[4]OUSMAN M,BENNASAR M.Determination of various hydraulic risistances during crossflow filtration of a starch grain suspension through inorganic membranes[J].J Membr Sci,1995,12(105):1-21.
[5]TARLETON E S,WAKEMAN R J.Understanding flux decline in crossflow microfiltration:PartⅡ-effects of process parameters[J].Trans Ichem E Part A,1994,72:431-440.
[6]张杰,刘仁楼,乔玉珠,等.HK阻截除油除油技术在高温凝结水回收系统中的应用[J].化工科技,2010,18(5):38-40.
[7]谭家翔,徐鹏,王胜,等.阻截除油技术在渤西油气处理厂的应用[J].技术与工程应用,2014,23(12):16-19.
[8]丁慧,彭兆阳.无机陶瓷膜处理油田采出水[J].环境工程学报,2013,7(4):1 399-1 404.