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Microbial gel ball embedded with thermophilic denitrifying bacteria as well as preparation method thereof

A technology of denitrifying bacteria and microorganisms, applied in chemical instruments and methods, biological water/sewage treatment, water pollutants, etc., can solve the problems of denitrifying bacteria activity reduction and removal effect reduction, so as to save domestication time and microbial toxicity Small, good hydrophilic effect

Active Publication Date: 2018-04-13
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the groundwater in our country is low temperature water, the activity of denitrifying bacteria is reduced under low temperature conditions, and the removal effect is reduced

Method used

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  • Microbial gel ball embedded with thermophilic denitrifying bacteria as well as preparation method thereof
  • Microbial gel ball embedded with thermophilic denitrifying bacteria as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A microbial gel ball for embedding psychrophilic denitrifying bacteria, including components and their weight additions: 12 parts of embedding agent solution, 4 parts of crosslinking agent solution, and 8 parts of denitrifying bacteria microorganisms, including:

[0047] The solute in the embedding agent solution includes starch, polyvinyl alcohol (PVA), sodium alginate (SA) and reduced iron powder;

[0048] The mass fraction of the starch in the embedding agent solution is 8%;

[0049] The mass fraction of the polyvinyl alcohol in the embedding agent solution is 1.2%;

[0050] The mass fraction of the sodium alginate in the embedding agent solution is 0.5%;

[0051] The mass fraction of the reduced iron powder in the embedding agent solution is 0.1%;

[0052] The solutes of the crosslinking agent solution are calcium chloride and boric acid, the mass fraction of calcium chloride in the crosslinking agent solution is 1%, and the mass fraction of boric acid in the crosslinking agen...

Embodiment 2

[0059] A microbial gel ball for embedding psychrophilic denitrifying bacteria, including components and their weight additions: 12 parts of embedding agent solution, 6 parts of crosslinking agent solution, and 10 parts of denitrifying bacteria microorganisms, including:

[0060] The solute in the embedding agent solution includes starch, polyvinyl alcohol (PVA), sodium alginate (SA) and reduced iron powder;

[0061] The mass fraction of the starch in the embedding agent solution is 8%;

[0062] The mass fraction of the polyvinyl alcohol in the embedding agent solution is 1.8%;

[0063] The mass fraction of the sodium alginate in the embedding agent solution is 1.1%;

[0064] The mass fraction of the reduced iron powder in the embedding agent solution is 0.5%;

[0065] The solutes of the crosslinking agent solution are calcium chloride and boric acid, the mass fraction of calcium chloride in the crosslinking agent solution is 2%, and the mass fraction of boric acid in the crosslinking age...

Embodiment 3

[0072] A microbial gel ball for embedding psychrophilic denitrifying bacteria, including components and their weight additions: 12 parts of embedding agent solution, 8 parts of cross-linking agent solution, containing 12 parts of denitrifying bacteria microorganisms, of which:

[0073] The solute in the embedding agent solution includes starch, polyvinyl alcohol (PVA), sodium alginate (SA) and reduced iron powder;

[0074] The mass fraction of the starch in the embedding agent solution is 8%;

[0075] The mass fraction of the polyvinyl alcohol in the embedding agent solution is 2.5%;

[0076] The mass fraction of the sodium alginate in the embedding agent solution is 1.7%;

[0077] The mass fraction of the reduced iron powder in the embedding agent solution is 1.0%;

[0078] The solutes of the crosslinking agent solution are calcium chloride and boric acid, the mass fraction of calcium chloride in the crosslinking agent solution is 2%, and the mass fraction of boric acid in the crosslink...

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Abstract

The invention relates to a microbial gel ball embedded with thermophilic denitrifying bacteria as well as a preparation method thereof. The microbial gel ball comprises the following components with the weight adding proportion: an embedding agent solution to a crosslinking agent to denitrifying bacteria-containing microorganisms is (3-4):(1-2):(2-3). The preparation method comprises the followingsteps: preparing the embedding agent solution, heating and melting the embedding agent solution, cooling, adding the denitrifying bacteria-containing microorganisms into the cooled embedding agent, mixing, adding the crosslinking agent dropwise to form a ball, performing cold storage until hardening, and washing out the crosslinking agent on the surface to prepare a product. The density of the microbial gel ball is increased by adding reduced iron powder and the settling performance is improved; meanwhile, chemical reaction is conducted by utilizing the reducibility of the iron powder and thedenitrification efficiency is improved. The microbial gel ball has higher activity and higher efficiency under the condition of low temperature; and the active sludge efficiency of the embedded microbial gel ball is higher than that of the non-embedded microbial gel ball with the equal biomass, and the biomass required by the embedded microbial gel ball is less than that of the non-embedded microbial gel ball under the condition of equal removing efficiency.

Description

Technical field: [0001] The invention belongs to the technical field of biological wastewater treatment, and specifically relates to a microbial gel ball embedded with psychrophilic denitrifying bacteria and a preparation method thereof. Background technique: [0002] Microbial embedding and immobilization technology refers to a new type of microbial treatment technology that limits free microorganisms to a certain space area through physical or chemical methods, and keeps them active and can be used repeatedly. Microbial embedding and fixation technology has the advantages of high microbial density, less loss, easy separation of products, strong resistance to poisoning and impact load, miniaturization of processing equipment, easy operation, strong stability, and low residual sludge. Most of the groundwater in our country belongs to low temperature water. Under low temperature conditions, the activity of denitrifying bacteria decreases and the removal effect decreases. Immobili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N11/14C12N11/10C12N11/08C12N11/04C02F3/34C02F101/16
CPCC02F3/34C02F2101/163C12N11/04C12N11/08C12N11/10C12N11/14
Inventor 李军李光蕾
Owner SHENYANG JIANZHU UNIVERSITY
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