Advanced wastewater treatment using floating filter media

PURPOSE: An advanced wastewater treatment using floating filter media is provided, which can treat organics, nitrogen and phosphorus in wastewater with low C/N ratio efficiently. CONSTITUTION: The system comprises an anaerobic tank(10) for separating coarse grits from raw wastewater; a flow equaliza...

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Bibliographic Details
Main Authors SUNG HYEON JE, MIN GYEONG GUK, CHOI GYEONG YEONG, LEE SANG IL, LEE JEONG HUN
Format Patent
LanguageEnglish
Published 26.01.2005
Edition7
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:PURPOSE: An advanced wastewater treatment using floating filter media is provided, which can treat organics, nitrogen and phosphorus in wastewater with low C/N ratio efficiently. CONSTITUTION: The system comprises an anaerobic tank(10) for separating coarse grits from raw wastewater; a flow equalization tank(20); a first, a second and a third upflow intermittent aeration tanks(30,40,50) filled with floating filter media, which are capable of changing flow passage; a sludge thickening tank(60) in which biofilm floc sloughed off from the floating filter media by back washing is settled, and settled sludge is drained to outside; a sterilization tank(80); a high frequency vibrator which induces biofilm sloughing from the floating filter media before backwashing; and a fluidized bed reactor(70) in which Ca-coated filter media react with phosphate in wastewater to form hydroxyapatite precipitate (Ca5(PO4)3OH).
Bibliography:Application Number: CN200410006261