Title:
WATER TREATMENT DEVICE AND METHOD FOR CLEANING FILTRATION MATERIAL LAYER FOR WATER TREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/001819
Kind Code:
A1
Abstract:
A water treatment device comprising: a jet nozzle (7) for mixed raw water flow; a filtration tank (5) for containing a filtration material layer (4) which comprises two layers which are an upper layer (2) and a lower layer (3) and are arranged below the jet nozzle for mixed raw water flow, the upper layer consisting of filtration materials having a smaller specific gravity and a greater particle diameter than the filtration materials of the lower layer; a water collecting/distributing pipe (13) for extracting filtered water and supplying reverse washing water to the filtration material layer in reverse washing operation; a filtration material vibrating means for vibrating each particle of the filtration materials, the filtration material vibrating means being provided with a vibration element (9) connected to the power source and also with vibration expansion elements (10) embedded in the upper layer (2) in such a manner that the vibration of the vibration element (9) is transmitted to the vibration expansion elements (10); and a drainage trough (12) provided above the filtration material layer.
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Inventors:
MIMURA Hitoshi (55, 〒5950055, JP)
三村等 (〒55 大阪府泉大津市なぎさ町６番１号 株式会社ナガオカ内 Osaka, 〒5950055, JP)
三村等 (〒55 大阪府泉大津市なぎさ町６番１号 株式会社ナガオカ内 Osaka, 〒5950055, JP)
Application Number:
JP2010/060108
Publication Date:
January 06, 2011
Filing Date:
June 15, 2010
Export Citation:
Assignee:
NAGAOKA INTERNATIONAL CORPORATION (6-1 Nagisa-cho Izumiotsu-shi Osaka, 55, 〒5950055, JP)
株式会社ナガオカ (〒55 大阪府泉大津市なぎさ町６番１号 Osaka, 〒5950055, JP)
MIMURA Hitoshi (55, 〒5950055, JP)
株式会社ナガオカ (〒55 大阪府泉大津市なぎさ町６番１号 Osaka, 〒5950055, JP)
MIMURA Hitoshi (55, 〒5950055, JP)
International Classes:
B01D29/66; B01D24/02; B01D24/46; B01D24/48; B01D29/60; C02F1/74
Attorney, Agent or Firm:
SAKAMOTO, Tohru et al. (Arakawa Building 35-5, Nishishinbashi 2-chom, Minato-ku Tokyo 03, 〒1050003, JP)
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