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Method and device for culturing and enriching cyanogen degrading flora and application

A technology of degrading bacteria and enriching, which is applied in the direction of sterilization methods, methods based on microorganisms, methods using microorganisms, etc., can solve the problems of low concentration of cyanide-degrading bacteria, difficulty in enrichment, weak impact resistance, etc., and achieve elimination Inhibition, Tolerance Enhancement, Effects of Improving Processing Capacity

Pending Publication Date: 2022-05-13
SHANGHAI LANKE PETROCHEM ENG & TECH
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Problems solved by technology

This patent uses the activated sludge method to treat acrylonitrile production wastewater, but the concentration of cyanide-degrading bacteria in the activated sludge system is low, it is not easy to enrich, and the impact resistance is weak

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  • Method and device for culturing and enriching cyanogen degrading flora and application

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application. Various common reagents used in the examples are all commercially available products.

[0047] In some embodiments, a method for culturing and enriching cyanide-degrading flora is provided.

[0048] Although cyanide is a highly toxic substance, some microorganisms in nature can obtain carbon and nitrogen nutrients from cyanide, and some microorganisms even use it as the only source of carbon and nitrogen. In activated sludge, es...

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Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a culture and enrichment method of a cyanogen degrading flora, a device for rapidly culturing and enriching the cyanogen degrading flora and application of the device in a cyanogen-containing sewage biological treatment system. The adopted method comprises the following steps: selecting; activated carbon is inoculated with activated sludge containing cyanide degrading bacteria, concentration of cyanide solution flowing through the activated carbon is gradually increased, nutrient substances beneficial to synthesis of the cyanide degrading bacteria and expression of cyanide degrading enzyme are supplemented, culture is carried out under proper reaction conditions till the requirement for cyanide concentration of effluent is met, and inhibition of cyanide on follow-up aerobic biodegradation is eliminated. And functions. Compared with a physical and chemical method, a biological method has higher popularization value due to low operation cost, and in view of the problem that the existing biological method is limited by the toxicity of cyanide, the method for rapidly culturing and enriching the cyanide degrading flora can efficiently and stably degrade cyanide and eliminate the inhibition effect of the cyanide on biological treatment, so that the cyanide degrading flora can be used for rapidly culturing and enriching the cyanide degrading flora. The biological treatment of the cyanide-containing wastewater can be normally carried out.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for cultivating and enriching cyanide-degrading bacteria, a device for rapidly cultivating and enriching cyanide-degrading bacteria and its application in a biological treatment system for cyanide-containing sewage. Background technique [0002] A large amount of cyanide-containing wastewater is discharged in the production process of acrylonitrile production, cyanide electroplating, non-ferrous metal smelting, metal processing and other industries. Cyanide is a highly toxic and highly toxic substance. A very small amount of cyanide can poison humans and animals to death in a short period of time. When CN in water - When it reaches 0.3-0.5mg / L, it can kill fish. Cyanide is also toxic to microorganisms, such as: it has obvious inhibitory effect on biological nitrification, 1mg / L CN - Can reduce biological nitrification rate by 50%, 10mg / L CN - Biol...

Claims

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Application Information

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IPC IPC(8): C12N1/36C12N11/14C12N1/20C02F3/34C12M1/36C12M1/12C12M1/38C12M1/08C12M1/02C12M1/00C02F101/38C02F103/36C02F103/16C12R1/01
CPCC12N1/36C12N11/14C12N1/20C02F3/34C12M25/18C12M25/20C12M29/04C12M29/06C12M39/00C12M41/48C12M45/02C12M41/12C12M41/32C12M41/26C02F2101/38C02F2103/16C02F2103/36
Inventor 韩媛媛马洪玺池剑亭朱洪张文军
Owner SHANGHAI LANKE PETROCHEM ENG & TECH
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