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废水中硫酸盐还原菌 (SRB)所造成的注水系统的腐蚀、结垢和阻塞严重影响着原油的开发与生产。以二氧化氯作为氧化型杀菌剂杀灭SRB的实验结果表明 ,ClO2 对SRB具有很强的灭菌能力 ;ClO2 投量C >1 0mg/L时就能满足回注水的要求 ;适宜的接触反应时间为t>4 0min ;相应地有Ct>4 0 ;对ClO2 的杀菌机理进行了探讨 ,研究成果将为今后油田水处理工艺的改造提供理论依据和技术支持
Corrosion, fouling and clogging of the water injection system caused by sulfate-reducing bacteria (SRB) in wastewater severely affect the development and production of crude oil. The experimental results of chlorine dioxide as an oxidative bactericide to kill SRB show that ClO2 has a strong ability to sterilize SRB. When the dosage of ClO2 is more than 10 mg / L, the requirement of injection water can be met. The suitable contact reaction The time is t> 4 0min; correspondingly Ct> 40; the bactericidal mechanism of ClO2 is discussed, the research results will provide theoretical basis and technical support for the future reform of oilfield water treatment process