SEWAGE TREATMENT

PROBLEM TO BE SOLVED: To provide a sewage treatment device capable of a continuous operation of filter units and also enabling to prevent deterioration of the water quality of treated water. SOLUTION: Sewage water is fed to the sewage treatment device provided with a biological reaction tank 1, plur...

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Bibliographische Detailangaben
Hauptverfasser:	SAKATA MORIO, NAGAI MUTSURO, SAWADA SHIGEKI, FUKUNAGA KAZUHISA, DAIDO HITOSHI, HASEGAWA TETSUO, KISHINE YOSHINAO, ASO EIJI
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 provide a sewage treatment device capable of a continuous operation of filter units and also enabling to prevent deterioration of the water quality of treated water. SOLUTION: Sewage water is fed to the sewage treatment device provided with a biological reaction tank 1, plural filter units 3 in which at least one portion of a surrounding wall immersed and arranged along an inflow direction of the sewage in the inside comprises a water passing support body, partitioning walls 4 for partitioning respective filter units, an aeration means provided at the bottom of the biological reaction tank 1, a washing diffusion pipe arranged at the bottom of the filter units and a buffer tank having a lower water level than a water level of the biological reaction tank 1. Then the treated water is taken out from the filter units 3, and also the washing diffusion pipes are selectively operated, thus respective filtering units 3 are alternately washed along the arranging direction.