Bacterial strain for producing biological flocculant and biological flocculant produced by using bacterial strain

A technology of biological flocculants and strains, which is applied in the field of oily sewage treatment, can solve the problems of residual toxicity of secondary pollution, etc., and achieve the effects of residual toxicity, diameter reduction, and stable performance

Inactive Publication Date: 2020-11-10
克拉玛依市新奥达石油技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of secondary pollution and residual toxicity in the above-mentioned background technology, the present invention provides a bacterial strain for producing bioflocculant and the bioflocculant produced by using it

Method used

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  • Bacterial strain for producing biological flocculant and biological flocculant produced by using bacterial strain
  • Bacterial strain for producing biological flocculant and biological flocculant produced by using bacterial strain
  • Bacterial strain for producing biological flocculant and biological flocculant produced by using bacterial strain

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Such as figure 1 and figure 2 Shown, a kind of method that utilizes biological flocculant as above to treat oily sewage, comprises the following steps:

[0037] S1, such as figure 1 Get 120mL of oily sewage to be treated and add it to the beaker, adjust the pH of the oily sewage to be treated to 6, and obtain the pretreated oily sewage;

[0038] S2, add 15g / L described biological flocculant to the oily sewage after the pretreatment in step S1, then mix uniformly and let stand for 2min, obtain such as figure 2 For the treated oily sewage shown, the mass ratio of the pretreated oily sludge to the biological flocculant is 100:1.

[0039] The oily sewage before and after treatment is detected in the following table 1:

[0040] Table 1 Comparison table before and after treatment of oily sewage with biological flocculants

[0041] index before processing after treatment Drainage water quality standard Suspended solid content, mg / L 207 15.3 ≤30.0...

Embodiment 2

[0045] The difference from Example 1 is that, as image 3 As shown, take 135mL of oily waste water to be treated and add it to the beaker. The oily waste water is scraped on the surface of the drilling trial repair waste liquid to remove oil slicks, and the remaining drilling trial repair waste liquid is oily waste water to be treated. get as Figure 4 The treated oily wastewater is shown.

[0046] The oily sewage before and after treatment is detected in the following table 2:

[0047] Table 2 Comparison table before and after treatment of oily sewage with biological flocculants

[0048] index before processing after treatment Drainage water quality standard Suspended solid content, mg / L 152 10.2 ≤30.0 Median particle diameter of suspended solids, μm 21.3 3.5 ≤5.0 Oil content, mg / L 214 35.4 ≤50.0

[0049] From the above, using the biological flocculant of the present invention to treat oily wastewater according to the method of t...

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Abstract

The invention belongs to the field of oily sewage treatment, and particularly relates to a bacterial strain for producing a biological flocculant and the biological flocculant produced by using the bacterial strain. The bacterial strain of the biological flocculant produced by the invention is named as Nocardia rhodochroms, and the preservation number is CGMCC NO.19718. The strain is preserved inChina General Microbiological Culture Collection Center on April 24 in 2020. The strain is stable in performance, and the biological flocculant for treating oily sewage can be prepared in the fermentation process. Therefore, the oily sewage can be well treated, and the treatment effect is superior to that of the existing common Nocardia rhodochroms. Moreover, the biological flocculant prepared from the strain does not cause harm to the environment, and the technical problems that an existing treatment method easily causes secondary pollution and has residual toxicity are solved.

Description

technical field [0001] The invention belongs to the field of oily sewage treatment, and in particular relates to a bacterial strain for producing a biological flocculant and the biological flocculant produced by the same. Background technique [0002] my country's major oil and gas fields have gradually entered the late stage of development, and the water content of the produced liquid has gradually increased during the oil production process. Natural gas production is also accompanied by the treatment of oily sewage. There are many sources of oily sewage. Oily sewage is produced in oil extraction, oil refining, oil storage and transportation and petrochemical industry in petroleum industry; sewage in railway and transportation industry, light industry, cleaning operation and food industry all contain a lot of oil. These oil pollutants mainly exist in four forms: slick oil, dispersed oil, emulsified oil and dissolved oil. [0003] At present, the treatment methods of oily s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C12P19/04C02F9/14C02F103/10C12R1/365
CPCC12P19/04C02F3/34C02F1/66C02F1/40C02F2103/10C12R2001/365C12N1/205
Inventor 董丁季凯吴海涛
Owner 克拉玛依市新奥达石油技术服务有限公司
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