发明名称 |
FRESH WATER GENERATION SYSTEM |
摘要 |
Provided is a fresh water generation system which filters biotreated water produced by microbiologically treating waste water via a primary semi-permeable membrane (8), and then mixes concentrated water rejected by the filtration with seawater, thereby to filter the mixed water via a secondary semi-permeable membrane (14). This system enables frequencies of chemical cleaning and replacement of the secondary semi-permeable membrane to be reduced. The fresh water generation system comprises: a primary semi-permeable membrane apparatus (9) which separates microorganism treating waste water into permeated water and concentrated water; a secondary semi-permeable membrane apparatus (13) which filters mixed water prepared by mixing the concentrated water into seawater. In the fresh water generation system, the primary semi-permeable membrane (8) has an equal to or a higher microorganism adhesive property than the secondary semi-permeable membrane (14). |
申请公布号 |
EP2769961(A4) |
申请公布日期 |
2015.07.29 |
申请号 |
EP20120842454 |
申请日期 |
2012.09.24 |
申请人 |
HITACHI, LTD.;TORAY INDUSTRIES, INC. |
发明人 |
NOTO, KAZUHIKO;KITAMURA, KOTARO;OKAWA, YUSUKE;TAKABATAKE, HIROO |
分类号 |
C02F1/44;B01D61/58;B01D71/16;B01D71/56;C02F1/76;C02F3/12;C02F9/00 |
主分类号 |
C02F1/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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