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Application of poly-1 and 5- dichloroanthraquinone in microorganism denitrification process and azo dyes micro-biological degradation process

A microbial degradation, dichloroanthraquinone technology, applied in physical/chemical process catalysts, chemical/physical processes, organic compounds/hydrides/coordination complex catalysts, etc., can solve azo dyes decolorization acceleration, hydraulic retention time It can achieve the effect of good biocompatibility, low production cost and not easy to be lost.

Inactive Publication Date: 2014-09-17
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rate of biologically effective degradation of pollutants in wastewater is relatively slow, resulting in longer treatment hydraulic retention time and higher infrastructure investment. Therefore, how to increase the rate of biologically effective degradation of pollutants has become one of the hot issues in current research.
[0003] In 2010, the master thesis of Hebei University of Science and Technology "Research on the Mechanism and Structure-Activity Relationship of Azo Dye Catalytic Enhancement by Non-water-soluble Mediator" disclosed the following technical features: Under the same reaction conditions, 1,5-dichloroanthraquinone, 1,8 -Dichloroanthraquinone, anthraquinone, and 1,4,5,8-tetrachloroanthraquinone all have acceleration effects on the decolorization of azo dyes, but the acceleration effects are weakened in turn
But there is no report on the application of the above-mentioned polymers with quinone groups in environmental governance

Method used

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  • Application of poly-1 and 5- dichloroanthraquinone in microorganism denitrification process and azo dyes micro-biological degradation process
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  • Application of poly-1 and 5- dichloroanthraquinone in microorganism denitrification process and azo dyes micro-biological degradation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First synthesize poly-1,5-dichloroanthraquinone according to the following steps:

[0029] (1) Vacuumize the reactor with a circulating water-type multi-purpose vacuum pump, and then continue to feed nitrogen;

[0030] (2) Weigh 0.85mmol (0.2355g) of 1,5-dichloroanthraquinone and dissolve it in 14mL of DMF;

[0031] (3) Weigh 1.10mmol (0.303g) bis(1.5-cyclooctadiene) nickel, 1.10mmol (0.172g) bipyridine, measure 0.85mmol (104mmL) 1,5-cyclooctadiene dissolved in In another 14mL of DMF;

[0032] (4) Pour the DMF solution in step (2) into the four-necked bottle, turn on the heat-collecting constant temperature heating magnetic stirrer, and add the solution in step (3) into the four-necked bottle by dropwise adding Stir while stirring, start heating after the dropwise addition is completed, raise the temperature to 60°C under the protection of nitrogen, and keep the constant temperature. When reacting for 48 hours, pour the reaction solution into dilute hydrochloric acid ...

Embodiment 2

[0049] The catalytic activity of poly(1,5-dichloroanthraquinone) in the degradation of nitrite was studied.

[0050] The preparation method and fixation method of poly-1,5-dichloroanthraquinone are the same as in Example 1.

[0051] Adopt the same step and method as Example 1 to investigate the catalytic activity of immobilized poly 1,5-dichloroanthraquinone in 110mg / L nitrite wastewater containing denitrifying microorganisms in logarithmic growth phase in 250mL, the results are as follows Figure 6 shown.

[0052] It can be seen from the figure that when the system was reacted for 12 hours, the removal rate of nitrite in the system added with blank pellets and the system added with immobilized 1,5-dichloroanthraquinone was about 52%, while that of the system added with The nitrite removal rate in the system added with immobilized poly-1,5-dichloroanthraquinone can reach 98%, which shortens the time required for nitrite degradation. The results showed that: 1,5-dichloroanthr...

Embodiment 3

[0054] Taking acid red B (structural formula shown in formula 4) as an example, the application of poly-1,5-dichloroanthraquinone in the degradation process of azo dyes was studied.

[0055]

[0056] Formula (4)

[0057] The preparation method and fixation method of poly-1,5-dichloroanthraquinone are the same as in Example 1.

[0058] Using the same steps and methods as in Example 1 to investigate immobilized poly 1,5-dichloroanthraquinone in 250mL containing logarithmic growth phase of the azo dye degradation strain Staphylococcus Catalytic activity in the 150mg / L acid red B wastewater of sp.GYZ, the result is as follows Figure 7 shown.

[0059] It can be seen from the figure that when the system was reacted for 4.5 hours, the system with immobilized 1,5-dichloroanthraquinone and the system with immobilized poly-1,5-dichloroanthraquinone were better than those without quinone. The removal rate of mediator wastewater increased by 9.8% and 14.3%. The results showed th...

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Abstract

The present invention disclosed the application of a polygin 1,5-dichloropatrum to accelerate microbial nitrification and the application of microbial degradation in accelerated nitrogen dyes.The present invention has excavated new uses for known polymer polymer 1,5-dichloropatrum and opened up a new application area; the polypel 1,5-dichlorimalized nitrification process and puppets used by the present invention adopted the inventionThe microbial degradation process of nitrogen dyes has accelerated, increasing the rate of microbial nitrification and the discharge rate of puppet nitrogen dyes, which can effectively reduce the treatment cost of nitrate / nitrite wastewater and puppet dye wastewater, and the fixed of the invention of the present inventionThe advantages of good stable compounds have the advantages of good stability, not easy to lose, and reducing secondary pollution. The price of fixed raw materials is cheap, good biocompatibility, simple fixed process, low production cost, and easy to apply in actual situation.

Description

technical field [0001] The invention belongs to the technical field of bioengineering and environmental engineering, and relates to the use of poly-1,5-dichloroanthraquinone compound, in particular to its use in microbial denitrification and microbial degradation of azo dyes. Background technique [0002] With the rapid development of social economy, the annual discharge of azo dye wastewater, nitrate wastewater and nitrite wastewater into the water environment is increasing significantly. Because of its serious harm to the ecological environment and human health, it has become a topic of widespread concern. At present, the treatment methods for the above-mentioned wastewater at home and abroad can be divided into two categories: physical and chemical methods and biological methods. Compared with the physical and chemical method, the biological method has the characteristics of simple process, low cost, and easy promotion, so it has become the preferred method for treating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/34B01J31/06C02F103/30C02F101/16
Inventor 郭建博廉静陈延明杨景亮李军章牛春梅罗湘南岳琳
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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