CAJ | 학술논문

根据大庆油田某污水联合站出水水质特性及油田低渗透层注水要求,采用改性聚偏氟乙烯超滤膜对其进行深度处理.结果表明,超滤膜的最佳运行条件:膜面流速为4.5 m/s,跨膜压差为0.20 MPa,温度为(37±0.5)℃,清洗周期为24 h.在此条件下.超滤膜运行稳定,平均膜通量在75 L/(m~2·h)以上,对硫酸盐还原菌(SRB)、铁细菌(IB)和腐生菌(TGB)的去除率均在95%以上,膜出水水质达到了<碎屑岩油藏注水水质推荐指标及分析方法>(SY/T 5329-94)的A1级标准.
근거대경유전모오수연합참출수수질특성급유전저삼투층주수요구,채용개성취편불을희초려막대기진행심도처리.결과표명,초려막적최가운행조건:막면류속위4.5 m/s,과막압차위0.20 MPa,온도위(37±0.5)℃,청세주기위24 h.재차조건하.초려막운행은정,평균막통량재75 L/(m~2·h)이상,대류산염환원균(SRB)、철세균(IB)화부생균(TGB)적거제솔균재95%이상,막출수수질체도료<쇄설암유장주수수질추천지표급분석방법>(SY/T 5329-94)적A1급표준.
Based on the characteristics of wastewater quality of a combined station in Daqing Oilfield and the quality criteria of reinjection water for the low permeability layer, the modified polyvinylidene fluoride ultrafiltration membrane was chosen for advanced treatment of the oilfield produced wastewater. The operation results show that the optimal operation conditions are surface flow velocity of 4. 5 m/s, transmembrane pressure of 0. 20 MPa, temperature of (37±0. 5)℃ and cleaning period of 24 h. The average membrane flux can reach over 75 L/(m~2·h) under the above conditions. The removal rates of sulfate reducing bacteria ( SRB ) , iron bacteria ( IB) and total growth bacteria ( TGB) are all up to 95%. The membrane effluent can reach the grade A1 criteria specified in Recommended Indexes on Injection Water Quality for Detrital Rock Oil Reservoirs and Analytical Methods (SY/T 5329 -94).