Composition for strengthening denitrification and denitrification of wastewater and method for denitrification thereof

A technology for denitrifying microorganisms and compositions, applied in chemical instruments and methods, water treatment with special compounds, and adding compounds to stimulate growth, etc. Simple, quick results

Active Publication Date: 2022-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] CN105621611A discloses a denitrification bacterial agent using nitrite for denitrification and its application. The invention mainly uses special combinations and ratios of strains to achieve denitrification and denitrification, involving various strains, and the preparation process is relatively complicated
For this accelerator, polyamines, organic acid hydroxylamine and organic acid salts can be added to metal salts before use, which is cumbersome to use

Method used

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  • Composition for strengthening denitrification and denitrification of wastewater and method for denitrification thereof
  • Composition for strengthening denitrification and denitrification of wastewater and method for denitrification thereof
  • Composition for strengthening denitrification and denitrification of wastewater and method for denitrification thereof

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Embodiment

[0032] The above compositions promote denitrification and denitrification ability to evaluate the experiment. The water quality to be tested is: COD of about 50mg / L, ammonia nitrogen of about 3mg / L, and total nitrogen of 230mg / L (mainly nitrogen nitrate). Reaction process: SBR process; Process parameters: stirring 14h - aeration 1h - precipitation 1h; Reaction system: 10L; Sludge sedimentation ratio in 30 minutes: 30%; Reaction temperature 35 °C, reaction pH: 6-8; DO：0.3mg / L； Carbon source: methanol. At the beginning stage of the experiment, 4ml of methanol and 5g / L of the composition prepared in Table 1, numbered sequentially according to the composition number is Example 1 - Example 12, compared to Example 1-9. After 16 h, the COD, ammonia nitrogen and total nitrogen concentrations of the supernatant were measured by sampling, and the results were shown in Table 3.

[0033] Table 3 Uses the treatment effect of different formulation compositions

[0034]

[0035] As can be se...

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Abstract

The invention relates to a composition for strengthening denitrification and denitrification of wastewater and a denitrification method thereof. The composition mainly includes a fermentation liquid phase, inorganic salts and adsorbents, and the inorganic salts include calcium salts, ferrous salts, and potassium phosphate salt; the fermentation liquid phase is the liquid obtained after separating the microorganisms from the denitrifying microorganism fermentation liquid. The present invention also provides a method for denitrification using the above composition. The composition of the invention is used for strengthening denitrification and denitrification, can realize rapid denitrification, quick start and quick recovery of the denitrification and denitrification system, and has the advantages of short treatment time, good denitrification effect and the like.

Description

Technical field [0001] The present invention belongs to the field of environmentally friendly wastewater treatment technology, specifically to biological denitrification technology, in particular to a composition that promotes denitrification and denitrification and a method of denitrification thereof. Background [0002] Due to its advantages of high efficiency, low cost and no secondary pollution, biological method has become the mainstream secondary treatment technology of various sewage treatment plants. With the increasingly stringent discharge standards, the total nitrogen emissions in wastewater have also become an indicator that must be controlled, so after the nitrifying bacteria ammonia nitrogen removal technology, the denitrifying bacteria denitrification technology has also been increasingly concerned. Denitrifying bacteria are a class of facultative anaerobic microorganisms that convert nitrogen nitrate or nitrite nitrogen into nitrogen in wastewater. Such microorgan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/38C02F3/34C02F3/28C02F101/16C02F101/30
CPCC02F3/34C02F3/28C02F2305/06C02F2209/16C02F2209/14C02F2209/15Y02W10/10
Inventor 陈明翔高会杰孙丹凤郭志华李宝忠
Owner CHINA PETROLEUM & CHEM CORP
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