摘要
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的高溶解氧浓度下不能生长．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. 5 mg/L, but could not grow at the dissolved oxygen concentration of 9. 0 mg/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 concentration 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. 8 mg/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 grow when pH<5. 5 or pH>8. 0. In oxygenic condition the SRB could also grow between pH 8. 0-8. 5.
出处
《中国腐蚀与防护学报》
CAS
CSCD
2000年第4期224-229,共6页
Journal of Chinese Society For Corrosion and Protection
关键词
硫酸盐还原菌
细胞培养
细菌腐蚀
油田流水
sulfate-reducing bacteria (SRB), culture of SRB, microbial corrosion, oil well flooding water.
