METHOD FOR BACKWASHING RADIOACTIVE WASTE WATER FILTERING DEVICE

PROBLEM TO BE SOLVED: To provide a method for backwashing a radioactive waste water filtering device capable of uniformly backwashing the whole of a filtration surface. SOLUTION: This method is use to backwash a radioactive waste water filtering device for filtering radioactive waste water by the ce...

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Bibliographische Detailangaben
1. Verfasser:	OBATA MASAMICHI
Format:	Patent
Sprache:	eng
Schlagworte:	DECONTAMINATION ARRANGEMENTS THEREFOR NUCLEAR ENGINEERING NUCLEAR PHYSICS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT SEPARATION TRANSPORTING TREATING RADIOACTIVELY CONTAMINATED MATERIAL
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for backwashing a radioactive waste water filtering device capable of uniformly backwashing the whole of a filtration surface. SOLUTION: This method is use to backwash a radioactive waste water filtering device for filtering radioactive waste water by the ceramic filter 3 on a cross-flow basis. Pressure is exerted on the filtration surface from both the raw water side and the permeated water side. By abruptly releasing the pressure on the raw water side, sediment 7 attached to the filtration surface is impulsively exfoliated to the raw water side. This enables impact force to be exerted directly and uniformly on the filtration surface, thus providing even backwash if the thickness of the sediment 7 is uneven.