WASTE WATER TREATING DEVICE AND STARTING OPERATION METHOD THEREOF

PROBLEM TO BE SOLVED: To provide a waste water treating device and its starting operation method for together shortening a period of time for accomodation of microbe stuck carriers at the time of starting operation, being able to make the treated water of good quality at rising time and unnecessary...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MIKAWA KAZUHIRO, ABE NAOKI
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 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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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a waste water treating device and its starting operation method for together shortening a period of time for accomodation of microbe stuck carriers at the time of starting operation, being able to make the treated water of good quality at rising time and unnecessary skill at the time of starting operation. SOLUTION: A 1st step aeration tank 12 and a 2nd step aeration tank 14 are disposed in series, and at the time of starting operation quantity of return sludge from a solid-liquid separation tank 15 to respective aeration tanks 12 and 14 by a controlling device of quantity of return sludge 28 is reduced in turn to acclimatize microbe stuck carriers 16 in the aeration tanks 12 or 14 of reduced quantity of return sludge.