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Preparation method and application of netted carrier-based sulfur-oxidizing bacteria immobilized fixed bioactive filler

A technology of sulfur-oxidizing bacteria and biological activity, applied in the field of water treatment, can solve the problems that the effect is difficult to achieve the expected purpose, the stability of the biologically active filler is poor, and the embedded body is easy to fall off, so as to improve the hydrophilicity, not easy to run off, and increase the strength Effect

Active Publication Date: 2014-10-22
BEIJING UNIV OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

After experimental research and comparison, we found that the bioactive fillers prepared based on the traditional filler structure and embedding method were difficult to achieve the expected effect in the test application, and there were problems such as poor overall stability of the bioactive filler, easy falling off of the embedding body and water solubility, etc. many problems

Method used

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  • Preparation method and application of netted carrier-based sulfur-oxidizing bacteria immobilized fixed bioactive filler
  • Preparation method and application of netted carrier-based sulfur-oxidizing bacteria immobilized fixed bioactive filler
  • Preparation method and application of netted carrier-based sulfur-oxidizing bacteria immobilized fixed bioactive filler

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Experimental program
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Effect test

Embodiment 1

[0030] 1. Preparation of Mesh Support

[0031] Polyvinyl chloride is used as the main material, and the hydrophilic material polyvinyl alcohol (PVA) with a mass fraction of 6% is added. The rectangular sheet-shaped carrier is 1.0m long and 0.4m wide. The mesh shape is square and the wire diameter is 1mm.

[0032] 2. Preparation of Sulfur Oxidizing Bacteria Concentrate

[0033] The sulfur-oxidizing bacteria suspension after the amplification culture was centrifuged and concentrated to obtain 3.5×10 9 Individual / mL concentration of sulfur oxidizing bacteria.

[0034] 3. Preparation of embedding solution

[0035] Weigh 5kg of polyvinyl alcohol, add 25L of ultrapure water, heat to 85°C, and dissolve for 15min. Take out the dissolved polyvinyl alcohol solution and stir evenly, then heat for 5min, stir evenly and cool to 31±1°C. Mix 25L of polyvinyl alcohol solution with 25L of the prepared concentrated solution of sulfur oxidizing bacteria, add 1kg of calcium carbonate, and sti...

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Abstract

The invention relates to a preparation method and an application of a netted carrier-based sulfur-oxidizing bacteria immobilized fixed bioactive filler, and belongs to the water treatment field. The fixed bioactive filler comprises an occlusion body and a carrier; the carrier is a netted fixed carrier prepared by adding a hydrophilic material polyvinyl alcohol to main materials comprising polyethylene and polypropylene, and carrying out hot melting or sheet hot pressing; the netted structure of the carrier allows the occlusion body to penetrate through meshes and the carrier to form a riveting structure in order to increase the integral stability; an occlusion liquid is obtained by mixing a sulfur-oxidizing bacterium concentrate with a polyvinyl alcohol solution; and the occlusion liquid is uniformly coated on the netted carrier, and is subjected to two stage crosslinking by boric acid to form the occlusion body, and the occlusion body is combined with the netted carrier to obtain the sulfur-oxidizing bacteria immobilized bioactive filler. The bioactive filler prepared in the invention can effectively solve the problems of low sulfur-oxidizing bacterium adhesion ability, low film forming ability and the like, improves the processing capacity of the reactor, and shortens the starting time.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to the preparation and application of a sulfur-oxidizing bacteria-immobilized immobilized bioactive filler based on a mesh carrier. Background technique [0002] With the rapid development of my country's industry, a large amount of sulfide-containing wastewater is often discharged in oil refining, coking, pharmaceutical and petrochemical industries. At present, the treatment of sulfide in water generally includes physical and chemical methods and biological oxidation methods, and the biological oxidation method has gradually become a sulfur-containing method due to its advantages such as no need to add chemicals, high removal efficiency, less biological sludge generation, and no secondary pollution. The main methods and research focus of wastewater treatment. When using the biological metabolic function of sulfur-oxidizing bacteria to treat sulfur-containing wastewater, ...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/10
CPCY02W10/10
Inventor 杨宏陈伟胡希佳管清坤王猛鄢琳王小乐吴城锋孟婷陶慕翔尚海源赵月兰王玉洁姚仁达
Owner BEIJING UNIV OF TECH
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