Composition for improving resistance of denitrification nitrogen removal system and denitrification method thereof

A nitrification denitrification and composition technology, applied in chemical instruments and methods, water treatment of special compounds, water pollutants, etc., can solve the problem of increasing difficulty in the treatment of ammonia nitrogen and total nitrogen, unsatisfactory denitrification effect, and denitrification system Fluctuation and other issues, to achieve the effect of improving rapid adaptability, protecting denitrification activity, and promoting stable progress

Pending Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

However, when these accelerators are used in the treatment of wastewater containing toxic substances such as cyanide, they have poor tolerance and unsatisfactory denitrification effect
[0006] With the increasing environmental protection standards, coupled with the complexity of sewage water quality and the limitation of environmental capacity, it is more difficult to meet the standard treatment of ammonia nitrogen and total nitrogen, and the denitrification system often fluctuates

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  • Composition for improving resistance of denitrification nitrogen removal system and denitrification method thereof
  • Composition for improving resistance of denitrification nitrogen removal system and denitrification method thereof

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Embodiment Construction

[0016] The preparation method and effect of the present invention will be further illustrated below by way of examples. Embodiments are carried out on the premise of the technical solutions of the present invention, and detailed implementation methods and specific operation processes are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0017] The experimental methods in the following examples are conventional methods in the art unless otherwise specified. The experimental materials used in the following examples can be purchased from biochemical reagent stores unless otherwise specified.

[0018] In the embodiment of the present invention, COD concentration adopts GB11914-89 " the mensuration of chemical oxygen demand of water quality-dichromate method " to measure; Ammonia nitrogen concentration adopts GB7478-87 " mensuration of water quality ammonium-distillation and titration method " to measure; Nitrogen concentrat...

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Abstract

The invention relates to a composition for improving resistance of a denitrification nitrogen removal system. The composition mainly comprises cordycepin, an alkyl glycoside and polyethylene glycol, the weight ratio of cordycepin to alkyl glycoside to polyethylene glycol is 1-10: 1-5: 1, preferably 1-5: 1-2: 1. The invention further provides a denitrification method of cyanide-containing and nitrogen-containing wastewater, and a biological denitrification system for treating the cyanide-containing and nitrogen-containing wastewater is contacted with the composition. When the composition disclosed by the invention is used for nitrogen removal treatment of cyanide-containing and nitrogen-containing wastewater, the rapid adaptive capacity of denitrification microorganisms to the environment and the resistance of the denitrification microorganisms to adverse environments can be improved, the denitrification activity of the microorganisms in a nitrogen removal system is effectively protected, and the stable operation of a denitrification nitrogen removal process is promoted.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a composition for improving the resistance of a denitrification and denitrification system and a denitrification method thereof. Background technique [0002] With the stringent environmental protection standards and the strengthening of environmental governance, the "Petroleum Refining Industry Pollutant Discharge Standard" (GB31570-2015) and the "Petrochemical Industry Pollutant Discharge Standard" (GB31571-2015) have stipulated more stringent overall Nitrogen emission standards. Therefore, the nitrate nitrogen in petrochemical and coal chemical wastewater must be treated up to the standard. Pre-denitrification or post-denitrification are commonly used treatment processes. The microorganisms involved in denitrification are mainly denitrifying bacteria, which can induce nitrate reductase A and nitrite reductase required for denitrification only under anaerobic condi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/28C02F101/18C02F101/16
CPCC02F3/34C02F3/28C02F2305/06C02F2101/18C02F2209/08C02F2209/16C02F2209/14C02F2101/16
Inventor 高会杰孙丹凤王刚陈明翔郭志华
Owner CHINA PETROLEUM & CHEM CORP
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