A METHOD THAT EMPLOYS MICROORGANISMS TO PURIFY OILFIELD PRODUCED WATER

This invention discloses a method for purifying oilfield produced water using microorganisms. It involves collecting oilfield produced water from Jingbian Tianci Bay injection well, Zichang Yujiaping production station, and Qinghuabian production station in the northern Shaanxi oil region. The water...

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Bibliographic Details
Main Authors ZHANG Qianqian, GAO Xiaopeng
Format Patent
LanguageEnglish
Published 06.06.2024
Subjects
CHEMISTRY
DISPOSAL OF SOLID WASTE
METALLURGY
PERFORMING OPERATIONS
RECLAMATION OF CONTAMINATED SOIL
RECLAMATION OF CONTAMINED SOIL SOIL
TRANSPORTING
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:This invention discloses a method for purifying oilfield produced water using microorganisms. It involves collecting oilfield produced water from Jingbian Tianci Bay injection well, Zichang Yujiaping production station, and Qinghuabian production station in the northern Shaanxi oil region. The water is treated using highly efficient petroleum-degrading bacterium CT-6. The results are as follows: After 2 days of treatment, the concentration of petroleum substances in the Tianci Bay water sample is 7.86mg/L, meeting the national secondary standard for petroleum substance discharge. By day 8, the concentration decreases to 4.21mg/L, meeting the primary standard. For the Yujiaping production station water sample, after 8 days of treatment, the concentration of petroleum substances is 19.52mg/L, meeting the national tertiary standard for petroleum substance discharge. This invention demonstrates excellent treatment effectiveness, low cost, and prevents secondary pollution, making it suitable for widespread application.
Bibliography:Application Number: LU20230505709