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Bacteria capable of producing surfactant and application of bacteria to in-situ reduction of PAH (polycyclic aromatic hydrocarbon) in coal/ petroleum chemical wastewater

A technology for producing surfactants and petrochemicals. It is used in bacteria, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of low effect, no methanogens are detected, and it is difficult to achieve ideal effects, etc. problem, to achieve the effect of low CMC, good acid and alkali resistance and salt resistance

Active Publication Date: 2019-01-08
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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  • Bacteria capable of producing surfactant and application of bacteria to in-situ reduction of PAH (polycyclic aromatic hydrocarbon) in coal/ petroleum chemical wastewater
  • Bacteria capable of producing surfactant and application of bacteria to in-situ reduction of PAH (polycyclic aromatic hydrocarbon) in coal/ petroleum chemical wastewater
  • Bacteria capable of producing surfactant and application of bacteria to in-situ reduction of PAH (polycyclic aromatic hydrocarbon) in coal/ petroleum chemical 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 bacteria capable of producing a surfactant and an application of the bacteria to in-situ reduction of PAH (polycyclic aromatic hydrocarbon) in coal / petroleum chemical wastewater. A strain is screened from coked sludge, identified as Pseudomonas aeruginosa and named Pseudomonas aeruginosa Rh5, and the strain is preserved with preservation number being GDMCC NO:60313 in Guangdong Microbial Culture Collection Center in January 12, 2018, and the address is Fifth Floor, 59 Building, No.100 Courtyard, Xianlie ZhongLu, Guangzhou. The bacteria capable of producing the surfactant can be applied to the in-situ reduction of PAH in the coal / petroleum chemical wastewater based on O1 / H / O2 technology. With the adoption of the bacteria capable of producing the surfactant, substantial in-situ reduction of PAH in the coal / petroleum chemical wastewater can be realized, more than 90% of PAH is degraded in situ, so that content of PAH in discharged sludge is greatly reduced, theenvironmental risk of the discharged coal chemical sludge is greatly reduced, and nitrogen removal effect is also improved.

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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IPC IPC(8): C12N1/20C02F3/34C02F3/30C02F103/36C12R1/385
CPCC02F3/30C02F3/34C02F2103/365C12N1/205C12R2001/385
Inventor 吴海珍韦海朝孙胜利韦景悦
Owner SOUTH CHINA UNIV OF TECH
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