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A Surfactant-Producing Bacteria and Its Application to In Situ Reduction of PAHs in Coal/Petrochemical Wastewater

A technology for the production of surfactants and petrochemicals, which is applied in the direction of bacteria, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of ineffectiveness, no methanogenic bacteria detected, and difficulty in achieving ideal results, etc. problem, to achieve good acid and alkali resistance and salt resistance, low CMC effect

Active Publication Date: 2020-06-19
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

Existing literature shows that the pre-anaerobic process is not suitable for coal / petrochemical wastewater treatment, because the raw water of coal / petrochemical wastewater is highly toxic and severely inhibits anaerobic microorganisms, so the effect is very small, and it is difficult to achieve the ideal effect, no methanogens were even detected

Method used

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  • A Surfactant-Producing Bacteria and Its Application to In Situ Reduction of PAHs in Coal/Petrochemical Wastewater
  • A Surfactant-Producing Bacteria and Its Application to In Situ Reduction of PAHs in Coal/Petrochemical Wastewater
  • A Surfactant-Producing Bacteria and Its Application to In Situ Reduction of PAHs in Coal/Petrochemical Wastewater

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Embodiment 1

[0062] In this embodiment, the existing O 1 / H / O 2 On the basis of process treatment of raw water of coking wastewater, in combination with the present invention, the surfactant-producing bacteria Pseudomonas aeruginosa Rh5 screened from the mud-water mixture of coking wastewater is used to reduce polycyclic aromatic hydrocarbons in situ; the specific method is: the screened surfactant-producing bacteria Pseudomonas aeruginosa Rh5 was adapted to domesticate coking wastewater; the raw water of coking wastewater to be treated was passed into O 1 / H / O 2 Biological fluidized bed, influent water passes through O 1 Stage (one-stage aerobic fluidized bed), H stage (anoxic fluidized bed) and O 2 stage (secondary aerobic fluidized bed); where O 1 Phase and O 2 All stages are fed with air, O 2 The supernatant of the stage was refluxed to the H stage; O 1 / H / O 2 After 15 days of stable operation of the biological fluidized bed, at O 1 Add the domesticated Rh5 strain at the stage...

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Abstract

The invention discloses a surfactant-producing bacterium and its application in situ reduction of polycyclic aromatic hydrocarbons in coal / petrochemical wastewater. The strain was screened from coking sludge, identified as Pseudomonas aeruginosa, named Pseudomonas aeruginosa Rh5, and was preserved in Guangdong Microbial Culture Collection Center on January 12, 2018, address: Xianlie Middle Road, Guangzhou 5th Floor, Building 59, No. 100 Compound, and the preservation number is GDMCC NO: 60313. The surfactant-producing bacteria can be applied in O 1 / H / O 2 In situ reduction of polycyclic aromatic hydrocarbons in process coal / petrochemical wastewater. The surfactant-producing bacteria can greatly reduce the polycyclic aromatic hydrocarbons in the coal / petrochemical wastewater in situ, and degrade the polycyclic aromatic hydrocarbons in situ by more than 90%, which greatly reduces the content of polycyclic aromatic hydrocarbons in the discharged sludge, greatly The environmental risk of coal chemical sludge discharged outside is reduced, and the denitrification effect is improved at the same time.

Description

technical field [0001] The invention belongs to the field of biotechnology, in particular to a surfactant-producing bacterium and its production in O 1 / H / O 2 Application of (aerobic / anoxic / aerobic) process for in-situ reduction of polycyclic aromatic hydrocarbons in coal / petrochemical wastewater. Background technique [0002] The coal / petrochemical industry occupies a very important position in my country's industry, and its environmental problems are also very prominent. Among them, water consumption and pollutant generation account for about 8% and 10% of the national total respectively, and there are still a large number of toxic and refractory organic substances such as polycyclic aromatic hydrocarbons (PAHs). The COD value of organic substances represented by tar, long-chain alkanes, phenols, and benzene in this type of wastewater is in the range of 3000-30000mg / L, and persistent organic pollution such as heterocyclic aromatic hydrocarbons and polycyclic aromatic hyd...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C02F3/34C02F3/30C02F103/36C12R1/385
CPCC02F3/30C02F3/34C02F2103/365C12N1/205C12R2001/385
Inventor 吴海珍韦朝海孙胜利韦景悦
Owner SOUTH CHINA UNIV OF TECH
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