Obligate halophile for processing high-salt oily waste liquor in petroleum industry

Abstract

The invention discloses a strain of obligate halophile Y-B, which is obtained from well drilling waste mud by enrichment, screening and culture, and aims at realizing high-efficient degradation of petroleum in high-salt oily waste liquor in the petroleum industry. The strain Y-B is milky white, is of a gram-positive bacterium, is shaped like a cell rod and can produce spores, the strain Y-B is identified as Bacillus subtilis subsp. spizizenii and has very high activity, a culture method is simple, and the strain Y-B has the advantages of easiness in obtainment, low cost and rapid growth, is suitable for weakly-alkaline and high-salt environments, has a better effect of removing the petroleum in the high-salt oily waste liquor and further has broad application prospects in the treatment ofthe high-salt oily waste liquor in the petroleum industry and oil overflow sudden accidents.

Description

technical field

[0001] The invention relates to an original halophilic bacterial strain and its application, in particular to the application of the bacterial strain in the treatment of different types of high-salt oily waste liquids. Background technique

[0002] At present, oil plays a pivotal role in the development of the national economy. With the rapid development of society and regional economy, the country's demand for oil energy continues to increase, making oil fields explored and developed on a large scale, and the pollution problems caused by oil development have become increasingly prominent and serious.

[0003] In the process of petroleum exploration and development, different types of oily waste liquids are produced in drilling operations, downhole operations, oil production, and combined stations. Due to the different characteristics of crude oil and geological conditions, the properties of waste liquids are quite different, but they also have common charact...

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