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Bacteria-algae complex agent for treating coal chemical industry wastewater and preparation method thereof

A technology of coal chemical wastewater and compounding agent, applied in the direction of microorganism-based methods, biochemical equipment and methods, chemical instruments and methods, etc., can solve the problems of secondary pollution, poor biodegradability, difficult-to-treat wastewater, etc., and achieve the promotion of substances Cycle, strong impact resistance, avoid secondary pollution effect

Inactive Publication Date: 2016-10-12
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of wastewater has poor biodegradability, high COD, ammonia nitrogen concentration, and phenol content, and the composition of organic matter is complex. Big difference, is a typical refractory industrial wastewater
Therefore, it is difficult for traditional biological treatment systems to treat this type of wastewater.
However, using pure physical and chemical methods to treat wastewater in order to achieve ideal effluent quality is neither realistic nor economical, and it is easy to cause secondary pollution. Incomplete degradation of pollutants and residues in the ecosystem will cause more damage to the environment. further harm
[0003] In recent years, some studies have attempted to add microorganisms with specific functions to the original wastewater system, and screen and prepare specific single or compound bacterial agents to treat various types of wastewater, but these technologies have slow treatment efficiency and limited treatment effects
my country's patent application, the application number is 201410839680.6, the name is "a compound microbial agent for aquaculture water treatment", which discloses a compound bacteria prepared by mixing Bacillus natto, Bacillus lactis and Bacillus coagulans in an appropriate proportion. In order to achieve the purpose of improving the treatment effect of aquaculture wastewater, although the application has a certain positive effect on the treatment of sewage, the effect of simple bacteria on the removal of pollutants is limited, and it cannot effectively promote the circulation of substances in the water body. The treatment effect on sewage is also slower
At the same time, according to the strong selectivity between various microorganisms and pollutants, there are certain requirements for environmental conditions. Therefore, for various types of wastewater, there should be corresponding composite microbial agents to meet the treatment of different wastewater. Requirements, but in my country's patent applications, there is no relevant report on the preparation of composite microbial agents for coal chemical wastewater

Method used

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  • Bacteria-algae complex agent for treating coal chemical industry wastewater and preparation method thereof
  • Bacteria-algae complex agent for treating coal chemical industry wastewater and preparation method thereof
  • Bacteria-algae complex agent for treating coal chemical industry wastewater and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Add agar at 1.8% to a certain coal chemical industry wastewater to make a solid medium. The initial water quality of the secondary effluent of coal chemical wastewater is: pH 8.82, COD concentration 1200mg / L, NH 3 -N concentration is 105mg / L, volatile phenol concentration is about 100mg / L. The dilution of activated sludge was inoculated into solid medium to screen out three functional bacteria: Pseudomonas putida, Ochrobactrumcytisi, and Flavobacterium soli; The three strains were inoculated into the liquid culture medium and cultured respectively. After the strains were cultivated to a dry weight of 2g / L, they were mixed to obtain a mixed bacterial liquid. The mass ratios of the three strains were 10%, 5%, and 5%, respectively.

[0044] (2) Cultivate Chlorella in the culture solution, stop the cultivation when the dry weight of the algae concentration in the culture solution is 2g / L, save it, and obtain the Chlorella sp. algae solution.

[0045] (3) Implant the m...

Embodiment 2

[0050] (1) Add agar to a certain coal chemical industry wastewater with a mass ratio of 1.5% to make a solid medium. The initial water quality of coal chemical wastewater is: pH 10.50, COD concentration 4000mg / L, NH 3 -N concentration is 300mg / L, volatile phenol concentration is 400mg / L, TP concentration is about 23.1mg / L. The dilution of activated sludge was inoculated into the medium, and three functional bacteria were screened out: Pseudomonas putida, Ochrobactrum cytisi, and Flavobacterium terrae. The three bacterial strains were inoculated into liquid culture medium for culture respectively, and after the bacterial strains were cultivated to a dry weight of 3g / L, they were mixed at a mass ratio of 12%, 4%, and 4% respectively to prepare a mixed bacterial liquid.

[0051] (2) Cultivate Scenedesmus (Scenedesmus) in the culture solution, stop the cultivation when the dry weight of the algae concentration in the culture solution is 2 g / L, store it, and obtain the Scenedesmus...

Embodiment 3

[0057] (1) Take wastewater from a coal gasification plant in China and add agar at 2.0% to make a solid medium. The initial water quality of coal chemical wastewater is: COD is 1000-2500mg / L, BOD5 (biochemical oxygen demand for five days) / CODCr (chemical oxygen demand) is 0.28-0.35, pH is 8-9, and total phenols are 50mg / L L, NH 3 -N 80mg / L. Before the treatment, the pH value of the sewage was first adjusted to 7, and then three functional bacteria were screened out: Pseudomonas putida, Ochrobactrum anthropi, and Flavobacterium terrae; The strains were inoculated into the liquid culture medium for cultivation, and the strains were cultured to a dry weight of 3g / L, and then mixed. The mass ratios of the three strains were 13%, 4%, and 3%, respectively.

[0058] (2) Cultivate Chlorella sp. (Chlorella sp.) and Scenedesmus (Scenedesmus) in nutrient solution, stop cultivating when the algae concentration dry weight value in the nutrient solution is 2g / L, preserve, obtain Chlorella...

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Abstract

The invention provides a bacteria-algae complex agent for treating coal chemical industry wastewater and a preparation method and application thereof. The bacteria-algae complex agent comprises the following components in parts by weight: 9-13 parts of pseudomonas, 3-6 parts of ochrobactrum, 3-6 parts of flavobacterium and 15-25 parts of algae. By adopting bacteria-algae complex agent provided by the invention, the coal chemical industry wastewater can be effectively and specifically purified.

Description

technical field [0001] The invention relates to a bacteria-algae compound agent for treating coal chemical industry wastewater and a preparation method thereof. Background technique [0002] In the development process of the coal chemical industry, the treatment of coal chemical wastewater is a major problem. This type of wastewater has poor biodegradability, high COD, ammonia nitrogen concentration, and phenol content, and the composition of organic matter is complex. The big difference is a typical refractory industrial wastewater. Therefore, traditional biological treatment systems are difficult to treat this type of wastewater. However, using pure physical and chemical methods to treat wastewater in order to achieve ideal effluent quality is neither realistic nor economical, and it is easy to cause secondary pollution. Incomplete degradation of pollutants and residues in the ecosystem will cause more damage to the environment. further hazards. [0003] In recent year...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/20C12N1/12C02F3/34C02F3/32C12R1/89C12R1/38C12R1/40C12R1/20
CPCC12N1/20C02F3/325C02F3/34C12N1/12
Inventor 陈涛静汪靓孙予罕祁文强赵权宇魏伟
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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