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Preparation and application of granular sulfur oxidizing bacteria immobilized bioactive filler with polyvinyl alcohol fiber as skeleton material

A polyvinyl alcohol fiber, sulfur-oxidizing bacteria technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. The embedded body is easy to fall off and other problems, so as to achieve the effect of high substrate mass transfer efficiency, reduced formation, and large amount of encapsulated bacteria.

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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  • Abstract
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  • Claims
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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 desired effect in the test application. and many other issues

Method used

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  • Preparation and application of granular sulfur oxidizing bacteria immobilized bioactive filler with polyvinyl alcohol fiber as skeleton material
  • Preparation and application of granular sulfur oxidizing bacteria immobilized bioactive filler with polyvinyl alcohol fiber as skeleton material
  • Preparation and application of granular sulfur oxidizing bacteria immobilized bioactive filler with polyvinyl alcohol fiber as skeleton material

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Embodiment Construction

[0024] The present invention will be further specifically described below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0025] (1) Place the polyvinyl alcohol fiber filaments with a length between 5mm-20mm in a random, uniform and fluffy manner in the groove mold, and use chemical bonding to reinforce the fiber filaments to obtain polyvinyl alcohol fiber blocks. The thickness of the fiber block is about 10mm, and the surface density is 1016g / m 2 ;

[0026] (2) Centrifuge and concentrate the suspension of sulfur-oxidizing bacteria, take 30L and concentrate to a concentration of 7.42x10 8 pcs / mL sulfur oxidizing bacteria concentrated solution for standby;

[0027] (3) Weigh 20.0kg of polyvinyl alcohol, add 140L of ultrapure water, heat to 85°C, and dissolve for 15 minutes. Take out the dissolved polyvinyl alcohol solution, stir it evenly, and then heat it for 5 minutes to obtain a polyvinyl alcohol solution;

[0028] (4...

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Abstract

The invention discloses preparation and an application of a granular sulfur oxidizing bacteria immobilized bioactive filler with a stereo three-dimensional reticulate polyvinyl alcohol fiber as a skeleton material, and belongs to the technical field of water treatment. The bioactive filler comprises two parts: an embedding body and a fiber yarn skeleton; the embedding body is obtained by boric acid secondary cross-linking of an embedding liquid containing sulfur oxidizing bacteria; the embedding body is embedded into pores among fiber yarns, and the irregular fiber yarns in the skeleton and the embedding body are combined into a stable organic whole. The preparation comprises the steps: soaking a fiber block composed of the stereo irregular polyvinyl alcohol fiber yarns in the embedding liquid formed by mixing a sulfur oxidizing bacteria concentrated solution and a polyvinyl alcohol solution, followed by carrying out boric acid secondary cross-linking immobilization, cleaning, and cutting to obtain the granular bioactive filler. The problem that sulfur oxidizing bacteria in a traditional sulfur-containing wastewater treatment reactor are easy to lose is solved, and the prepared bioactive filler has good stability and good application prospects.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to the preparation and application of a granular sulfur-oxidizing bacteria-immobilized bioactive filler with polyvinyl alcohol fiber as a skeleton material. 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-co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 杨宏胡希佳陈伟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 湖南汨罗循环经济产业园区科技创新服务中心
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