Extra-cellular polysaccharide of aerobic Ruthia sp. strain metabolin and preparation and application thereof

A technology of Rochester aerobicum and metabolites, applied in wastewater treatment, water field
CN101580550BInactive Publication Date: 2011-06-15DALIAN JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN JIAOTONG UNIVERSITY
Publication Date
2011-06-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an extra-cellular polysaccharide of aerobic Ruthia sp. strain metabolin and preparation and application thereof. An aerobic strain ZHT4-13 is separated from adhesive sludge ofwild Ruditapes philippinarums in the Bohai sea offshore of China and is identified as a Ruthia sp. The aerobic strain is treated by seed culture and amplification culture, and a fermentation broth ofthe aerobic strain is precipitated with ethanol and separated centrifugally to obtain the extra-cellular polysaccharide MBF4-13. The extra-cellular polysaccharide MBF4-13 is measured to have high flocculation activity, the FR value to kaolin reaches over 80 percent, and the removal rate to hexavalent chromium ions reaches 69.3 percent; the extra-cellular polysaccharide MBF4-13 has high activity to decolorize high-concentration wastewater, and the decolorization ratios to methylene blue, ink blue, malachite green and crystal violet reach 86.11 percent, 99.49 percent and 97.84 percent; and theextra-cellular polysaccharide MBF4-13 plays a role of obviously improving the performance and the structure of activated sludge. The extra-cellular polysaccharide has potential value of developing a novel microbial flocculant.
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Description

technical field

[0001] The invention belongs to the field of water and waste water treatment. It involves flocculation and precipitation of suspended impurities, and is a flocculant used for sedimentation and separation; in particular, it relates to a source of microbial flocculant-producing bacteria, a method for fermentation and cultivation of bacterial strains, a preparation method for the flocculant MBF4-13 produced by it, and the flocculant Uses for flocculation, sedimentation and decolorization in wastewater treatment. Background technique

[0002] Flocculants are one of the commonly used agents in water treatment technology. In recent years, the most widely used traditional high-molecular polymer flocculants have been found to have potential problems that threaten human health and destroy the ecological environment. Research on new environmentally friendly and pollution-free flocculants has become a hot issue in water treatment research. Most of them are microbial f...

Claims

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