微藻-细菌处理油田采出水与生活污水的效能研究
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1.西安石油大学石油工程学院;2.中国石油塔里木油田分公司哈得采油气管理区

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X703 DOI

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国家自然科学基金青年(51504192),陕西省自然科学基础研究计划项目(2016JQ5102)。


Study on the Efficiency of Microalgae-Bacteria Treatment of Oilfield Produced Water and Domestic Sewage
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College of Petroleum Engineering,Xi’an Shiyou University,Xi’an

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    摘要:

    将油田采出水与生活污水混合用于微藻-细菌共生培养。考察不同混合比例(1/3、1/5、1/15、1/35)对生物生长和营养物去除的影响。实验结果显示:微藻-细菌在采出水/生活污水=1/3的混合液中生长情况最好,总生物量达到0.56 g/L,其中藻密度为0.33 g/L,菌密度为0.23 g/L;藻叶绿素a含量达到649.27 μg.(mg.DCW)-1。在营养物去除方面,高混合比的污水更有利于微藻-细菌吸收营养物。采出水与生活污水混合比为1/3的条件下,有机物和氨氮去除率最高,总COD去除率达到了65%,氨氮去除率为37%;采出水与生活污水混合比为1/5的水样总磷去除效果最好,去除率达到70%。

    Abstract:

    The oilfield produced water and domestic sewage were mixed for microalgae-bacteria symbiotic culture. The effects of different mixing ratios (1/3, 1/5, 1/15, 1/35) on biological growth and nutrient removal were investigated. The experimental results showed that the growth of microalgae-bacteria was the best in the mixed solution of produced water/domestic sewage =1/3, and the total biomass reached 0.56 g/L, among which the density of algae was 0.33 g/L, the density of aerobic bacteria was 0.23 g/L, and the content of chlorophyll-A of algae reached 649.27 μg.(mg.DCW)-1. In terms of nutrient removal, the sewage with high mixing ratio is more conducive to the absorption of nutrients by microalgae and bacteria. When the mixture ratio of produced water and domestic sewage is 1/3, the removal rates of organic matter and ammonia nitrogen are the highest, the total COD removal rate is 65%, and the removal rate of ammonia nitrogen is 37%. The wastewater with a mixture ratio of 1/5 of produced water and domestic sewage has the best total phosphorus removal effect, and the removal rate reaches 70%.

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  • 收稿日期: 2023-09-27
  • 最后修改日期: 2023-11-15
  • 录用日期: 2023-12-19
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