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Microbial composite functional bacterial agent for treating coking wastewater and preparation method thereof

A technology of composite functional bacteria and coking wastewater, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of insignificant strengthening effect of coking wastewater, limited effect of COD removal rate, high cost of bacterial agent preparation, etc. Achieve the effects of shortening the adaptation period, eliminating inhibition, and improving the removal effect

Inactive Publication Date: 2012-02-01
武钢集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the bioaugmentation treatment of coking wastewater has been applied in recent years, there are still many problems, such as the disclosed patented technology of using Paracoccus to degrade nitrogen-containing heterocyclic compound wastewater (ZL 200710303975.1) (such as coking wastewater). It has a good degradation effect on pyridine, but has a limited effect on improving the removal rate of COD in wastewater; another example is a patented technology of using microorganisms to treat coking wastewater (ZL 200410005197.4), in which the microorganisms used cover 47 genera and 105 kinds of microorganisms , there are too many types of microorganisms, some of which have no significant effect on the strengthening of coking wastewater, and the cost of preparation of bacterial agents is too high

Method used

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  • Microbial composite functional bacterial agent for treating coking wastewater and preparation method thereof
  • Microbial composite functional bacterial agent for treating coking wastewater and preparation method thereof
  • Microbial composite functional bacterial agent for treating coking wastewater and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A microbial composite functional bacterial agent for treating coking wastewater and a preparation method thereof. Each component microorganism and its content in the microbial composite functional bacterial agent are: n-hexadecane degrading bacteria 15-18wt%, phenol-degrading bacteria 25-30wt%, pyridine-degrading bacteria 10-13wt%, quinoline-degrading bacteria 9-11wt%, carbazole-degrading bacteria 7-10wt%, naphthalene-degrading bacteria 15-18wt%, anthracene-degrading bacteria 9-11wt%.

[0022] The n-hexadecane-degrading bacteria, phenol-degrading bacteria, pyridine-degrading bacteria, quinoline-degrading bacteria, carbazole-degrading bacteria, naphthalene-degrading bacteria, and anthracene-degrading bacteria in this example belong to Pseudomonas sp. , Arthrpbacter.sp., Bacillus sp., Enterobacter sp., Pseudomonas sp., Stenotrophomonas sp. ), Fusarium oxysporum.

[0023] The preparation method of the microbial composite functional bacterial agent for treating coking was...

Embodiment 2

[0033] A microbial composite functional bacterial agent for treating coking wastewater and a preparation method thereof. Each component microorganism and its content in the microbial composite functional bacterial agent are: n-hexadecane degrading bacteria 16-19wt%, phenol-degrading bacteria 23-28wt%, pyridine-degrading bacteria 11-14wt%, quinoline-degrading bacteria 8-10wt%, carbazole-degrading bacteria 6-9wt%, naphthalene-degrading bacteria 16-19wt%, anthracene-degrading bacteria 8-10wt%.

[0034] The preparation steps of the microbial composite functional bacterial agent are the same as the steps (1), (2) and (3) of Example 1.

[0035] In the laboratory A / O device, inoculate an appropriate amount of coking activated sludge, keep the sludge SV value at 30% to 40%, maintain the pH value of the aerobic pool and the anoxic pool at 6.5 to 8.0, and the temperature at 25 to 35 °C, the dissolved oxygen concentration in the aeration tank is 2-4 mg / L. Continuously feed coking waste...

Embodiment 3

[0039] A microbial composite functional bacterial agent for treating coking wastewater and a preparation method thereof. Each component microorganism and its content in the microbial composite functional bacterial agent are: n-hexadecane degrading bacteria 17-20wt%, phenol-degrading bacteria 20-25wt%, pyridine-degrading bacteria 12-15wt%, quinoline-degrading bacteria 10-12wt%, carbazole-degrading bacteria 5-8wt%, naphthalene-degrading bacteria 17-20wt%, anthracene-degrading bacteria 10-12wt%.

[0040] The preparation steps of the microbial composite functional bacterial agent are the same as the steps (1), (2) and (3) of Example 1.

[0041] In the laboratory A-A / O device, inoculate an appropriate amount of coking activated sludge, keep the sludge SV value at 30-40%, maintain the pH value of the anaerobic tank at 6.5-7.5, and maintain the anoxic tank at a temperature of 30-35°C. , The pH value of the aerobic tank is 6.5-8.0, the temperature is 25-35°C, and the dissolved oxygen...

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Abstract

The invention particularly relates to a microbial composite functional bacterial agent for treating coking wastewater and a preparation method thereof. According to the technical scheme, the microbial composite functional bacterial agent comprises the following microbes: 15-20wt% of n-hexadecane degrading bacteria, 20-30wt% of phenol degrading bacteria, 10-15wt% of pyridine degrading bacteria, 8-12wt% of chinoline degrading bacteria, 5-10wt% of carbazole degrading bacteria, 15-20wt% of naphthalene degrading bacteria and 8-12wt% of anthracene degrading bacteria. The microbial composite functional bacterial agent has the characteristics that: the composite functional bacterial agent prepared from artificially bred functional strains is added to an original biochemical treatment device, thus the removing capability of refractory organic matters in the coking wastewater is greatly improved and the contents of COD (chemical oxygen demand) and NH3-N in the coking biochemical effluent can both reach national first-level emission standard. The microbial composite functional bacterial agent has strong environment adaptability, good cooperativity, and broad application prospects in bioaugmentation of coking wastewater.

Description

technical field [0001] The invention belongs to the technical field of microbial composite functional bacterial agents for treating wastewater. In particular, it relates to a microbial composite functional bacterial agent for treating coking wastewater and a preparation method thereof. Background technique [0002] Coking wastewater is a large amount of high-concentration organic wastewater mainly composed of phenols produced in the process of coal-to-coke, gas purification and coking product recovery. In addition to phenols, coking wastewater contains inorganic poisons such as sulfide, cyanide, thiocyanide, ammonia, and a large number of refractory organic substances such as aromatics, heterocycles, and polycycles. The removal efficiency of tar-like alkanes, nitrogen heterocyclic compounds such as pyridine, quinoline and carbazole, and polycyclic aromatic hydrocarbons such as naphthalene and anthracene in coking wastewater by ordinary microorganisms is low, resulting in so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/00C12N1/20C12N1/14C02F3/34C12R1/38C12R1/06C12R1/07C12R1/01C12R1/77
Inventor DUAN AIMINYAN JIABAOSHENG JUNBOYANG ZHONGHUACHANG HONGBINGTUO BAOHUALIU GANGYAO MAN
Owner 武钢集团有限公司
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