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Title:
ろ過方法、ろ過装置およびろ過池
Document Type and Number:
Japanese Patent JP4908542
Kind Code:
B2
Abstract:

To provide a filtration method which is easily applied even to a conventional water purifying facility without the need of specially wide space, and obtains a large amount of delicious water by treating with a biological layer.

When water (28, 48) to be treated is filtered through the biological layer of a prescribed thickness comprising sand (25, 40) and microorganisms which are stuck to the sand and bred, air bubbles having diameter of ≤80 μm are mixed in the water to be treated and then it is filtered through the biological layer. Also, when filtering, the water (28, 48) to be treated is pressurized as needed.

COPYRIGHT: (C)2011,JPO&INPIT


Inventors:
Kazunori Koishi
Application Number:
JP2009087168A
Publication Date:
April 04, 2012
Filing Date:
March 31, 2009
Export Citation:
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Assignee:
Kazunori Koishi
International Classes:
C02F3/06; B01D24/00; C02F1/52
Domestic Patent References:
JP2007152275A
JP54016843A
JP9001167A
JP3224524A
JP2031895A
JP6063593A
Attorney, Agent or Firm:
Yoshiaki Sugitani
Yutsugu Sugitani