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Preparation and application of immobilized star-shaped bioactive filler based on reticulate carrier

A bioactive and carrier technology, which is applied in the preparation and application of immobilized star-shaped bioactive fillers, can solve the problems of easy shedding of embedded bodies, bacterial loss, poor overall stability, etc., and achieves improved hydrophilicity and large encapsulated bacteria , the effect of stable performance

Active Publication Date: 2014-07-30
湖南汨罗循环经济产业园区科技创新服务中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Experimental studies have shown that the bioactive fillers prepared by combining traditional carriers such as Raschig rings, Pall rings, stepped rings, and suspended modified fillers with embedding bodies through adhesion have poor overall stability and embedding The body is easy to fall off, causing problems such as bacterial loss

Method used

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  • Preparation and application of immobilized star-shaped bioactive filler based on reticulate carrier
  • Preparation and application of immobilized star-shaped bioactive filler based on reticulate carrier
  • Preparation and application of immobilized star-shaped bioactive filler based on reticulate carrier

Examples

Experimental program
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Effect test

example 1

[0030] 1. Preparation of Mesh Support

[0031] Using high molecular polymers such as polypropylene as the main material, adding hydrophilic material polyvinyl alcohol (PVA) to make a sheet-shaped mesh carrier with a length of 1.0cm and a width of 0.7. The shape of the mesh is square, the side length is 2mm, and the wire diameter is 1.55mm. Six pieces of the above-mentioned sheet-shaped carriers are thermally melted and bonded to form a star-shaped mesh carrier with an included angle of 60°.

[0032] 2. Treatment of nitrifying bacteria

[0033] Using the residual sludge in the secondary sedimentation tank of the urban sewage plant as the bacterial source, the nitrifying bacteria suspension after screening and enrichment culture was centrifuged and concentrated to obtain 3.5×10 9 A / mL concentration of nitrifying bacteria.

[0034] 3. Acquisition of embedding solution

[0035] Weigh 5kg of polyvinyl alcohol, add 25L of ultrapure water and heat to 90°C to dissolve for 15min, t...

example 2

[0043] 1. Preparation of Mesh Support

[0044]Polyethylene and other polymers are used as the main material, and the hydrophilic material polyvinyl alcohol (PVA) is added to make a sheet-shaped mesh carrier with a length of 1.0 cm and a width of 0.5 cm. The shape of the mesh is rectangular, the length is 2mm, the width is 1.5mm, and the wire diameter is 1mm. Five pieces of the above-mentioned sheet-shaped carriers are thermally fused and bonded to form a star-shaped mesh carrier with an included angle of 72°.

[0045] 2. Treatment of nitrifying bacteria

[0046] Using the residual sludge in the secondary sedimentation tank of the urban sewage plant as the bacterial source, the nitrifying bacteria suspension after screening and enrichment culture was centrifuged and concentrated to obtain 3.5×10 9 A / mL concentration of nitrifying bacteria.

[0047] 3. Acquisition of nitrifying bacteria embedding solution

[0048] Weigh 5kg of polyvinyl alcohol, add 40L of ultrapure water an...

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Abstract

The invention discloses preparation and an application of an immobilized star-shaped bioactive filler based on a reticulate carrier, and belongs to the technical field of water treatment. The star-shaped bioactive filler comprises two parts: an embedding body and the carrier; the carrier is a star-shaped carrier formed by taking polyethylene or polypropylene as a main material, adding a polyvinyl alcohol hydrophilic material and carrying out hot melting or plate hot pressing; with a reticulate structure of the carrier, the embedding body can be allowed to penetrate through meshes to form a riveting fixing structure together with the carrier so as to increase the filler overall stability; an embedding liquid is formed by mixing a bacteria concentrated solution and a polyvinyl alcohol solution; the reticulate carrier is evenly coated with the embedding liquid, and the embedding body is formed after boric acid secondary cross-linking of the embedding liquid and is combined with the reticulate carrier to obtain the immobilized star-shaped bioactive filler. The prepared immobilized star-shaped bioactive filler not only solves the problems that bacteria are difficult in advantage establishment, easy to lose and the like, but also improves the processing ability of a reactor, shortens the start-up time, and has broad application prospects.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to the preparation and application of an immobilized star-shaped bioactive filler based on a mesh carrier. Background technique [0002] Microbial cell immobilization technology can greatly increase the concentration of microorganisms, make it difficult for microorganisms to lose, shorten the start-up time of the reactor, significantly enhance the ability of anti-toxicity, acid and alkali resistance, and salt resistance, and can purify and create the ecological advantages of characteristic bacteria, and produce characteristic and efficient reactions , showing good application prospects. The commonly used immobilization methods of microbial cells include adsorption, cross-linking and embedding. Among them, the embedding method is the most commonly used, and the materials that have been successfully used for microbial cell embedding include: polyvinyl alcohol, agar, K-carrageenan, gela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/10
CPCY02W10/10
Inventor 杨宏尚海源管清坤吴城锋陈伟鄢琳王小乐王猛孟婷陶慕翔胡希佳赵月兰王玉洁姚仁达
Owner 湖南汨罗循环经济产业园区科技创新服务中心