A kind of microbial gel ball embedded with psychrophilic denitrifying bacteria and its preparation method

A technology of denitrifying bacteria and microorganisms, which is applied in the fields of biochemical equipment and methods, chemical instruments and methods, biological water/sewage treatment, etc. Strong anti-microbial degradation performance and low microbial toxicity

Active Publication Date: 2021-12-07
SHENYANG JIANZHU UNIVERSITY
View PDF5 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of microbial gel ball embedded with psychrophilic denitrifying bacteria and its preparation method
  • A kind of microbial gel ball embedded with psychrophilic denitrifying bacteria and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0047]The solute in the described embedding agent solution comprises 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 solute of the crosslinking agent solution is 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...

Embodiment 2

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

[0060] The solute in the described embedding agent solution comprises 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 solute of the crosslinking agent solution is 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 ...

Embodiment 3

[0072] A microbial gel ball for embedding psychrophilic denitrifying bacteria, including components and the added parts by weight: 12 parts of embedding agent solution, 8 parts of crosslinking agent solution, and 12 parts of denitrifying bacteria microorganisms, wherein:

[0073] The solute in the described embedding agent solution comprises 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 solute of the crosslinking agent solution is 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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A microbial gel ball for embedding psychrophilic denitrifying bacteria and a preparation method thereof, the microbial gel ball includes components and their weight addition ratio is, embedding agent solution: crosslinking agent solution: microorganisms containing denitrifying bacteria = (3~4):(1~2):(2~3). The preparation method is as follows: prepare the embedding agent solution, heat and melt it and then cool it down, add the microorganisms containing denitrifying bacteria into the cooling embedding agent, mix and drop into the cross-linking agent to form a sphere and refrigerate until hardened, rinse off the surface cross-linking agent , to obtain the product. The present invention increases the density of microbial gel balls by adding reduced iron powder to improve its sedimentation performance; at the same time, it utilizes the reducibility of iron powder to carry out chemical reactions to increase denitrification efficiency. Microbial gel balls have better activity and higher efficiency under low temperature conditions; embedded microbial gel balls are more efficient than unembedded activated sludge with the same biomass, and under the same removal efficiency, the former is better than the latter. Requires less biomass.

Description

Technical field: [0001] The invention belongs to the technical field of biological wastewater treatment, and in particular relates to a microbial gel ball embedding 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 by physical or chemical methods, and keeps them active and reusable. Microbial embedding and immobilization technology has the advantages of high microbial density, less loss, easy separation of products, strong resistance to poison and impact load, miniaturization of treatment equipment, easy operation, strong stability, and less residual sludge. 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. The range of suitable temper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): C12N11/14C12N11/10C12N11/084C12N11/04C02F3/34C02F101/16
CPCC02F3/34C02F2101/163C12N11/04C12N11/08C12N11/10C12N11/14
Inventor李军李光蕾
OwnerSHENYANG JIANZHU UNIVERSITY