Title:
WASTE LIQUID RECYCLING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/024544
Kind Code:
A1
Abstract:
[Problem] To provide a waste liquid recycling system in which a waste liquid can be reused without being released into a river, etc.
[Solution] In a reverse osmosis membrane device (9), a waste liquid is separated into concentrated water which contains metal ions, etc. and water which does not contain such ions, etc. The water separated with the reverse osmosis membrane device (9) has such quality that the water has a pH of 6.5-7.5, a chlorine concentration of 15 ppm or less, a conductivity of 110 µs/cm or less, and a COD of 13.3 ppm or less, which are on the water-quality level for industrial water. Hence, the water separated with the reverse osmosis membrane device (9) is sent to a pure-water device (10), where the water is mixed with fresh industrial water. The mixed water is subjected to painting pretreatment water washing and electrodeposition water washing.
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Inventors:
MASAMUNE HIROYUKI (JP)
HIRATA KAZUHIRO (JP)
HIRATA KAZUHIRO (JP)
Application Number:
PCT/JP2013/064610
Publication Date:
February 13, 2014
Filing Date:
May 27, 2013
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
NALCO JAPAN G K (JP)
KATAYAMA CHEMICAL WORKS CO (JP)
NALCO JAPAN G K (JP)
KATAYAMA CHEMICAL WORKS CO (JP)
International Classes:
C02F9/00; B01D61/02; C02F1/04; C02F1/08; C02F1/28; C02F1/44; C02F1/62; C02F11/13
Foreign References:
| JP2004016829A | 2004-01-22 | |||
| JP2003326206A | 2003-11-18 | |||
| JP2003326300A | 2003-11-18 | |||
| JP2002285352A | 2002-10-03 | |||
| JP2004160396A | 2004-06-10 | |||
| JP2005000713A | 2005-01-06 | |||
| JP2001219176A | 2001-08-14 | |||
| JPH09324986A | 1997-12-16 | |||
| JP2006220371A | 2006-08-24 | |||
| JP2003340450A | 2003-12-02 |
Attorney, Agent or Firm:
KOYAMA, YUU (JP)
Hill 有 (JP)
Hill 有 (JP)
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