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Method for treating acetaldehyde wastewater through cooperation of microorganisms and enzymes

A co-processing, microbial technology, applied in biological water/sewage treatment, chemical instruments and methods, neutralized water/sewage treatment, etc., can solve the problems of complex wastewater components, inability to effectively degrade wastewater COD, etc., to improve biochemical treatment. Efficiency, cost savings and site area, the effect of reducing aldehyde content

Inactive Publication Date: 2020-04-17
ANHUI COSTAR BIOCHEM CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Patent No. CN105311952A discloses a method for treating formaldehyde using the synergistic effect of microorganisms and enzymes. This method provides a new idea for the study of acetaldehyde wastewater, but acetaldehyde and formaldehyde are very different in structure and physical and chemical properties , the toxic effect on microorganisms in acetaldehyde wastewater is more significant, and the components of wastewater are more complex. The existing technology cannot effectively degrade COD in wastewater. Therefore, it is necessary to develop a method for synergistic treatment of acetaldehyde wastewater with microorganisms and enzymes

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  • Method for treating acetaldehyde wastewater through cooperation of microorganisms and enzymes

Examples

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Comparison scheme
Effect test

Embodiment 1

[0022] (1) Get 10L of industrial production acetaldehyde wastewater, add a certain amount of nutrient and sodium hydroxide, adjust C:N:P=1000:5:1 in the wastewater, and the pH is within the scope of 6.8-7.2;

[0023] (2) the mixture of microorganism Bacillus subterraneus COO13B and catalase, the amount of microorganism Bacillus subterraneus COO13B and catalase is 10:1 by mass ratio to make a composite biological preparation;

[0024] (3) Add the compound biological agent into the prepared acetaldehyde wastewater, the concentration of the added bacteria is OD600=0.1, move it into a 30° C. incubator for 48 hours, and the rotation speed of the incubator is 180 rpm.

Embodiment 2

[0026] (1) Get 10L of industrial production acetaldehyde wastewater, add a certain amount of nutrient and sodium hydroxide, adjust C:N:P=1000:5:1 in the wastewater, and the pH is within the scope of 6.8-7.2;

[0027] (2) by the mixture of microorganism Escherichia coli K-12 and catalase, the amount of microorganism Escherichia coli K-12 and catalase is 10:1 by mass ratio, makes composite biological agent;

[0028] (3) Add the compound biological agent into the prepared acetaldehyde wastewater, the concentration of the added bacteria is OD600=0.1, move it into a 30° C. incubator for 48 hours, and the rotation speed of the incubator is 180 rpm.

Embodiment 3

[0030] (1) Get 10L of industrial production acetaldehyde wastewater, add a certain amount of nutrient and sodium hydroxide, adjust C:N:P=1000:5:1 in the wastewater, and the pH is within the scope of 6.8-7.2;

[0031] (2) by the mixture of microorganism Vibrio crassostreae LGP7 and catalase, the amount of microorganism Vibriocrassostreae LGP7 and catalase is 10:1 by mass ratio, makes composite biological preparation;

[0032] (3) Add the compound biological agent into the prepared acetaldehyde wastewater, the concentration of the added bacteria is OD600=0.1, move it into a 30° C. incubator for 48 hours, and the rotation speed of the incubator is 180 rpm.

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Abstract

The invention provides a method for treating acetaldehyde wastewater through cooperation of microorganisms and enzymes. The method specifically comprises the following steps: (1) proportionally mixingmicroorganisms and enzymes to obtain a composite biological preparation; (2) adding a certain amount of a nutrition regulator and sodium hydroxide into industrial acetaldehyde wastewater, and regulating carbon, nitrogen and phosphorus in and the pH value of the wastewater; and (3) adding the composite biological agent into the adjusted acetaldehyde wastewater, carrying out stirring and mixing, maintaining a temperature at 30 DEG C, carrying out treating for 48 hours to remove aldehyde organic matters in the wastewater, and introducing the wastewater into a biochemical pool for subsequent treatment. According to the method, organic matters such as acetaldehyde in the wastewater are degraded by utilizing the synergistic effect of the microorganisms and the enzymes, so the biotoxicity of theacetaldehyde wastewater is reduced, and subsequent biochemical treatment efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of acetaldehyde wastewater treatment, in particular to a method for synergistically treating acetaldehyde wastewater with microorganisms and enzymes. Background technique [0002] Acetaldehyde is a colorless liquid with a strong irritating odor. Acetaldehyde is an important organic chemical raw material for the production of acetic acid, ethanol, ethyl acetate, n-butanol, etc. The extensive use of acetaldehyde in industry will produce acetaldehyde-containing wastewater, and how to treat these acetaldehyde wastewater becomes question. Acetaldehyde wastewater is colorless and transparent, with a strong pungent odor. The water quality components are complex, its BOD / COD is between 0.50 and 0.55, and its biodegradability is good, that is, it is more suitable to use biological methods to treat acetaldehyde wastewater. At present, the biological treatment methods for acetaldehyde wastewater mainly include anaer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/34
CPCC02F1/66C02F3/34C02F3/342C02F2101/34
Inventor 李文兵张志宏周寿芳产丹丹王婕刘彬
Owner ANHUI COSTAR BIOCHEM CO LTD
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