OIL-CONTAINING WASTE WATER TREATING DEVICE AND ITS TREATMENT

PROBLEM TO BE SOLVED: To stably treat the waste water having a high content of oil by providing an ultrafilter for primarily treating the pretreated oil-contg. waste water and a fluidized-bed bioreactor for secondarily treating the primary treated waste water. SOLUTION: The waste water from the wast...

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Bibliographische Detailangaben
Hauptverfasser:	SHOJI KATSUYUKI, ISE JUNJI, ARAKI EIJI, FUNAMICHI TOKUSHICHI
Format:	Patent
Sprache:	eng
Schlagworte:	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 PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To stably treat the waste water having a high content of oil by providing an ultrafilter for primarily treating the pretreated oil-contg. waste water and a fluidized-bed bioreactor for secondarily treating the primary treated waste water. SOLUTION: The waste water from the waste water tank 1 storing a waste water having a high content of oil is passed through a filter 2 and a pH regulator 3, pretreated, then supplied to a concentration tank 4 and ultrafiltered as the primary treatment. The primary treated water is sent to a primary treated water tank 7, stored and then sent to a fluidized-bed bioreactor 10. Since aerobic microorganism are deposited on the surface of a carrier in the bioreactor 10 and anaerobes in the porous carrier, the carrier is brought into contact with the primary treated water to aerobically and anaerobically treat the org. matter in the primary treated water which is efficiently decomposed. The secondary treated water cleaned to a specified value is discharged outside the system from a circulating tank 11.