研究了油田注水井中分离的硫酸盐还原菌（SRB）的生长特性。结果表明：SRB菌株不是严格的厌氧菌，它能耐受4.5mg /L浓度的溶解氧,但在9.0mg/L的高溶解浓度下不能生长.NaCl浓度小于0.818%时SRB可正常生长,在0.972%-2.28%时只能在水下沉积物中生长,大于2.45%时生长完全受到抑制.铁离子浓度增大,SRB代谢活力增强,生长高峰期延长,Fe2+限制SRB生长的浓度下限为小于6.8mg/L,高Fe2+浓度对SRB生长无抑制作用.厌氧环境下SRB生长的适宜pH为6.5-7.5,pH小于5.5或大于8.0时SRB不能生长;有氧环境下SRB在pH8-8.5时仍能生存乃至增殖.
D.desulfuricans Separated from oil flooding water were studied.The results showed that the SRB strain can resist the dissolved oxygen concentration of 4.5mg/L,but could not grow at the dissolved oxygen concentration of 9.0mg/L.It was not obligate anaerobes but annex anaerobes.It could grow both in liquid and deposit at the NaCl concentration below 0.818%, and could grow only deposit in the NaCl concentation range of 0.972%to 2.28%,but could not grow when NaCl concentration was over 2.45%.Increasing Fe2+ concentration was better for the SRB growing ,and SRB could not grow when Fe2+ concentration was below 6.8mg/L.High Fe2+ concentration has no repressing effect on SRB.In anoxic condition the appropriate pH range for growing was between 6.5-7.5,and SRB could not frow when pH＜5.5orpH＞8.0.In oxygenic condition the SRB could also grow between pH 8.0-8.5.
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