摘要
为控制大庆油田注入水中细菌的数量和减少硫化物的危害,作者在油田污水注入站进行了二氧化氯杀菌试验,确定了二氧化氯的最佳投加浓度。结果表明,当储水罐内回注水中投加的二氧化氯质量浓度在40mg/L以上时,对污水中硫酸盐还原菌、腐生菌和铁细菌的灭菌率可达90%,回注水中的硫化物含量也明显减少,细菌与硫化物指标达到油田注水标准。腐蚀率却随着二氧化氯浓度的增大而逐渐增加,最高达到0.069mm/a。在回注水中二氧化氯质量浓度为40mg/L时,腐蚀率达到Q/SYDQ0605—2006企业标准。
For the sterilization of the bacteria in oil field refilling water and reducing the harm of sulfides, the refilling water in oil field has been treated by chlorine dioxide at the wastewater refilling station of daqing oilfield. The results show that when the optimal concentration of chlorine dioxide in the water-storing tank is above 40 mg/L, the sterilization rates of sulphate reduction bacteria, saprophyte bacteria and iron bacteria could reach 90%. The sulfide content in the wastewater is decreased obviously, and the indexes of bacteria and sulfide reach the standard of oil field refilling water. But the erodibility increases gradually with the increase of chlorine dioxide concentration, by lab and field experiments. The highest erodibility reaches 0.069 mm/a. When the concentration of chlorine dioxide in the refilling water is 40 mg/L, the erodibility reaches the demand of Standard Q/SYDQ 0605--2006.
出处
《工业水处理》
CAS
CSCD
北大核心
2008年第8期60-62,69,共4页
Industrial Water Treatment
基金
国家高技术研究发展(863)计划(2002AA601310)
大庆油田有限责任公司科技发展项目(030143)
关键词
二氧化氯
油田注水
杀菌
硫化物
腐蚀率
chlorine dioxide
oil field refilling water
sterilization
sulfide
erodibility
