BIOMEDIA USING POLYVINYL ACETAL

PURPOSE: Provided are biomedia using polyvinyl acetal which is excellent in adhesiveness of microorganism, thereby enhancing water treatment efficiency and can be used regardless of the kind of wastewater. CONSTITUTION: The biomedia is manufactured by i) dissolving polyvinyl acetal in water, adding...

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Bibliographic Details
Main Authors PARK, JUN HA, KIM, YUNG SUK
Format Patent
LanguageEnglish
Korean
Published 02.07.2001
Edition7
Subjects
CHEMISTRY
CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
METALLURGY
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PURPOSE: Provided are biomedia using polyvinyl acetal which is excellent in adhesiveness of microorganism, thereby enhancing water treatment efficiency and can be used regardless of the kind of wastewater. CONSTITUTION: The biomedia is manufactured by i) dissolving polyvinyl acetal in water, adding starch, dextrin, surfactant and formalin to the polyvinyl acetal, heating it to 50-80deg.C by using sulfuric acid or hydrochloric acid as a catalyst, and then repeating washing-and-dewatering to prepare foamed polyvinyl acetal; and ii) forming the foamed polyvinyl acetal into a hexahedral or cylindrical shape of 1-30cm¬2 size to make large surface area.
Bibliography:Application Number: KR19990055493