Title:
WASTE WATER TREATMENT SYSTEM, DEVICE FOR CONTROLLING AIR SUPPLY VOLUME, AND METHOD FOR CONTROLLING AIR SUPPLY VOLUME
Document Type and Number:
WIPO Patent Application WO/2018/179476
Kind Code:
A1
Abstract:
The present invention controls the energy consumption necessary for aeration while supplying air appropriately to various tanks. A waste water treatment system (1) comprises multiple reaction tanks (10), aeration pipes (30), an aeration unit (20) and a unit (40) for controlling the air supply volume. The unit (40) for controlling the air supply volume comprises: a water quality measurement section for measuring the condition of the waste water inside the reaction tanks (10); a necessary air volume-acquiring section for acquiring, on the basis of the measurement results of the water quality measurement section, the air volume necessary to achieve the prescribed target water quality for the waste water in the reaction tank (10) for each of the various reaction tanks (10); a target internal pipe pressure-calculating section for calculating the pressure loss in the aeration pipes when air of the necessary volume is supplied to the aeration pipes (30), calculating the target internal pipe pressure on the basis of the pressure loss in the aeration pipes, and changing the calculated target internal pipe pressure according to the changes in necessary air volume; and an aeration control section for controlling air supply from the aeration unit (20) so that the pressure in the aeration pipes (30) reaches the target internal pipe pressure.
Inventors:
TAKAHASHI HIROYUKI (JP)
NAKA DAISUKE (JP)
TSUBOI NOBUKI (JP)
INOUE MASASHI (JP)
NAKA DAISUKE (JP)
TSUBOI NOBUKI (JP)
INOUE MASASHI (JP)
Application Number:
PCT/JP2017/028302
Publication Date:
October 04, 2018
Filing Date:
August 03, 2017
Export Citation:
Assignee:
METAWATER CO LTD (JP)
International Classes:
C02F3/12
Foreign References:
| JPS56129088A | 1981-10-08 | |||
| JPS5827692A | 1983-02-18 | |||
| JP2015182036A | 2015-10-22 | |||
| JPS61157397A | 1986-07-17 | |||
| JPS60125297A | 1985-07-04 | |||
| JPS61129092A | 1986-06-17 | |||
| JPS61143697U | 1986-09-04 | |||
| JPH0947780A | 1997-02-18 | |||
| JPS56129088U | 1981-10-01 |
Other References:
See also references of EP 3604236A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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