Title:
AEROBIC BIOLOGICAL TREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/163426
Kind Code:
A1
Abstract:
Provided is an aerobic biological treatment device 1 comprising: a reaction tank (a tank body) 2; a water-permeable plate 3 installed horizontally in the lower part of the reaction tank 2; a large-diameter particle layer 4 formed on the upper side of the water-permeable plate 3; a small-diameter particle layer 5 formed on the upper side of the large-diameter particle layer 4; an oxygen-dissolving membrane module 6 arranged on the upper side of the small-diameter particle layer 5; a reception chamber 7 formed on the lower side of the water-permeable plate 3; a raw water spray tube 8 for supplying raw water within the reception chamber 7; and an air diffuser tube 9 installed for the purpose of diffusing air within the reception chamber 7. The oxygen-dissolving membrane module 6 comprises an upper header 20, a lower header 21, and hollow fiber membrane strands 22 arranged so as to span the area between the headers 20, 21.
Inventors:
KOBAYASHI HIDEKI (JP)
FUKASE TETSUROU (JP)
FUKASE TETSUROU (JP)
Application Number:
PCT/JP2019/002700
Publication Date:
August 29, 2019
Filing Date:
January 28, 2019
Export Citation:
Assignee:
KURITA WATER IND LTD (JP)
International Classes:
C02F3/08; B01D63/04; B01F1/00; B01F3/04; B01F5/00
Domestic Patent References:
| WO2018100841A1 | 2018-06-07 | |||
| WO2018168022A1 | 2018-09-20 |
Foreign References:
| JPS6490093A | 1989-04-05 | |||
| US20180022625A1 | 2018-01-25 | |||
| CN101234817A | 2008-08-06 | |||
| JPH0568996A | 1993-03-23 | |||
| JPH07328689A | 1995-12-19 | |||
| JP2018500162A | 2018-01-11 |
Attorney, Agent or Firm:
SHIGENO, Tsuyoshi et al. (JP)
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