NITRIFICATION AND DENITRIFICATION OF NITROGEN CONTAINING WASTE WATER

PROBLEM TO BE SOLVED: To reduce the power necessary for returning a nitrification liquid to circulate a part of the nitrification liquid in a nitrification vessel to a denitrification vessel of the pre-stage. SOLUTION: Baffle plates 31 and 32 are arranged in 2 rows at a certain interval along the lo...

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Bibliographische Detailangaben
1. Verfasser:	MATSUBARA KIWAMU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY METALLURGY MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To reduce the power necessary for returning a nitrification liquid to circulate a part of the nitrification liquid in a nitrification vessel to a denitrification vessel of the pre-stage. SOLUTION: Baffle plates 31 and 32 are arranged in 2 rows at a certain interval along the longitudinal direction of an aeration tank 2 at fixed positions of the aeration tank 2 in the tank width direction, an air diffuser 3 is provided between one of the baffle plate 31 and the tank wall adjacent to the baffle plate 31, air is diffused from the diffuser 3 and turning flows 34 and 35 circulating by the flow of a treating liquid in the aeration tank 2 toward another baffle plate 32 with the resultant ascending flow 33 are generated to mix and stir the treating liquid.