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Application of Shewanella oneidensis and immobilized sphere thereof in treatment of printing and dyeing wastewater

A technology of Shewanella Oneida and immobilized pellets, which is applied in the direction of immobilizing on or in inorganic carriers, fixing on/in organic carriers, textile industry wastewater treatment, etc., to improve the recycling rate , Improve the effect of decolorization efficiency

Pending Publication Date: 2017-10-10
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There is no relevant report on the use of Shewanella oneidae in the decolorization of printing and dyeing wastewater

Method used

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  • Application of Shewanella oneidensis and immobilized sphere thereof in treatment of printing and dyeing wastewater
  • Application of Shewanella oneidensis and immobilized sphere thereof in treatment of printing and dyeing wastewater
  • Application of Shewanella oneidensis and immobilized sphere thereof in treatment of printing and dyeing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 Preparation of Immobilized Beads of Shewanella Oneida

[0045] A preparation method for Shewanella Oneida immobilized pellets, comprising the following steps:

[0046](1) Weigh 8g of polyvinyl alcohol (the average degree of polymerization is 1800±100) and add it to 100mL of deionized water. After soaking for 30 minutes, stir it in a water bath at 80-90°C until it is completely dissolved, and then add 0.5g of seaweed into the solution. Na2SO4, stirred, mixed evenly to obtain PVA-SA suspension;

[0047] (2) Pick a single colony of Shewanella Oneida and inoculate it in 6mL LB medium (sodium chloride, 5g; yeast powder, 5g; peptone, 10g) and cultivate for about 48h; Centrifuge at 3000r / min for 20min, remove the supernatant, wash with 0.9% normal saline, repeat the centrifugation twice, then add 0.9% normal saline to prepare Shewanella Oneida suspension;

[0048] (3) Add 0.2 g of activated carbon to 12 mL of Shewanella Oneida bacteria suspension, mix and adsorb f...

Embodiment 2～4

[0055] Adopt the same method as Example 1 to prepare Shewanella Oneida immobilized pellets, but in the PVA-SA suspension of step (1), the mass fraction of polyvinyl alcohol and sodium alginate becomes:

Embodiment 2

[0056] Embodiment 2: polyvinyl alcohol 2%, sodium alginate 1%;

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Abstract

The invention discloses an immobilized pellet of Shewanella Oneida and the application of Shewanella Oneida in treating printing and dyeing wastewater. The invention proposes for the first time that Shewanella oneida is used in the treatment of printing and dyeing wastewater, and provides a new way for the decolorization of printing and dyeing wastewater. The decolorization efficiency of Oneida Shewanella to printing and dyeing wastewater is particularly outstanding, so the present invention makes Oneida Shewanella into immobilized pellets, and the immobilized pellets not only effectively improve the decolorization efficiency of Oneida Shewanella. Reuse rate, and greatly improve the decolorization efficiency of printing and dyeing wastewater, the highest decolorization efficiency can reach 43.31%.

Description

technical field [0001] The invention belongs to the technical field of printing and dyeing wastewater treatment, and in particular relates to an immobilized pellet of Shewanella Oneida and the application of Shewanella Oneida in treating printing and dyeing wastewater. Background technique [0002] The textile printing and dyeing industry is one of the industrial sectors with large water consumption and large emissions in my country. With the widespread use of chemical fiber fabrics and the rapid development of the dye industry, the finishing technology has also continued to improve, and new auxiliaries, dyes, and finishing agents have been used in large quantities. According to statistics, in 2002, the total discharge of textile wastewater in my country was 7 billion tons, of which 80% was printing and dyeing wastewater. [0003] Due to the large amount of printing and dyeing wastewater, deep color, high salt content, low biodegradability, and good water solubility of reac...

Claims

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Application Information

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IPC IPC(8): C12N1/20C12N11/14C12N11/10C12N11/08C02F3/34C02F103/30C12R1/01
CPCC12N1/20C02F3/34C02F2101/308C02F2103/30C12N11/08C12N11/10C12N11/14
Inventor 赵雪芹张杰魏步云叶婷陶斯杰章露婷
Owner ZHEJIANG SCI-TECH UNIV
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