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Composite carbon source for biological denitrification as well as preparation method and application of composite carbon source

A composite carbon source, biological denitrification technology, applied in chemical instruments and methods, biological water/sewage treatment, special compound water treatment, etc., can solve the problems of poor denitrification and denitrification effect, etc. The effect of denitrification efficiency and service life improvement

Pending Publication Date: 2022-04-29
中原环保股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a composite carbon source for biological denitrification and its preparation method, to solve the problem of poor denitrification denitrification effect when a single carbon source is used

Method used

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preparation example Construction

[0040] The present invention also provides the preparation method of the composite carbon source used for biological denitrification as described above, which adopts the following technical scheme: comprising the following steps: (1) adding the acid in the reaction vessel, stirring and mixing uniformly (2) adding the alcohols to the solution obtained through step (1), stirring; (3) adding the sugars to the solution obtained through step (1), stirring; (4) adding the alcohols to the solution obtained through the step (1) 3) Adding inorganic salts, polymethacrylate, growth factors and trace elements to the obtained mixed solution, stirring evenly and adjusting the pH to 6-8 to obtain the composite carbon source for biological denitrification.

[0041] In a preferred embodiment of the present invention, the step of adding water to the reaction vessel is also included before the step (1).

[0042] The present invention also provides the application of the above-mentioned compound ...

Embodiment 1

[0045] The composite carbon source used for biological denitrification in this embodiment includes the following components in mass percentage: 30% acetic acid, 10% propionic acid, 15% ethanol, 15% propanol, 10% ethylene glycol, 15% glucose, Inorganic salt 2%, polymethacrylate 1%, growth factor 1% and trace element 1%.

[0046] The preparation method of the compound carbon source that is used for biological denitrification of the present embodiment, comprises the following steps: (1) the raw material of above-mentioned mass percentage is weighed respectively, and water is first added in reactor, then adds acid (acetic acid and propionic acid), stirred for half an hour, and mixed uniformly; (2) added alcohols (ethanol, propanol and ethylene glycol) to the solution obtained through step (1), and continued to stir for half an hour; (3) 2) adding glucose to the resulting solution, and stirring for another half an hour; (4) adding inorganic salt (potassium dihydrogen phosphate), po...

Embodiment 2

[0048] The composite carbon source used for biological denitrification in this embodiment includes the following components in mass percentage: 20% acetic acid, 10% propionic acid, 10% ethanol, 10% propanol, 15% ethylene glycol, 20% glucose, 2% inorganic salts, 1% polymethacrylate, 1% growth factors, 1% trace elements and water (to make up 100%).

[0049] The preparation method of the compound carbon source that is used for biological denitrification of the present embodiment, comprises the following steps: (1) the raw material of above-mentioned mass percentage is weighed respectively, and water is first added in reactor, then adds acid (acetic acid and propionic acid), stirred for half an hour, and mixed uniformly; (2) added alcohols (ethanol, propanol and propylene glycol) to the solution obtained through step (1), and continued to stir for half an hour; (3) Add glucose to the solution obtained after processing, and stir for another half an hour; (4) add inorganic salt (dip...

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Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a composite carbon source for biological denitrification and a preparation method and application thereof. The composite carbon source for biological denitrification comprises the following components: acids, alcohols, saccharides, inorganic salts, polymethacrylate, growth factors and trace elements. The composite carbon source for biological denitrification has various components, and can effectively avoid the problem that the diversity of microbial flora in activated sludge is reduced due to long-term use of a single carbon source. In addition, the composite carbon source for biological denitrification disclosed by the invention is small in relative molecular weight, can be easily utilized by denitrifying bacteria, improves the denitrification efficiency, and can be quickly degraded, so that the effluent meets the national COD (Chemical Oxygen Demand) standard. The composite carbon source product for biological denitrification is safe, non-toxic, scientific, reasonable, simple in production process and convenient to popularize.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a composite carbon source for biological denitrification and its preparation method and application. Background technique [0002] In recent years, the problem of eutrophication in water bodies has become increasingly serious, and the release of the "Water Ten Measures" has also put forward higher requirements for the removal of nitrogen and phosphorus in sewage treatment plants. At present, urban sewage treatment plants generally adopt economical and efficient biological nitrification and denitrification denitrification methods. The type of organic carbon source and C / N affect the effect of denitrification, and most of the sewage plants in my country generally have low carbon sources in the influent. The reduction of microbial activity in the biological pool in winter makes the denitrification efficiency low and it is difficult to meet the emission standards....

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/34
CPCC02F3/28C02F3/342C02F2305/06
Inventor 杨静丹蔡广强蔺洪永杜莉莉包海花王保贵刘玉婷张晓威谢佳
Owner 中原环保股份有限公司
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