To provide a system for circulating to use water utilizing a membrane remarkably reducing the supply amount of drinking water to a water utilization space, and also being the most suitable for water quality and eliminating a waste for energy by purifying living drainage in combination with a membrane filtration technique to circulate and reutilize it.
The system for circulating to use water utilizing the membrane comprises in the system for supplying water to a water utilizing space 1 divided into a water service area A2, a water service area B3 and a flush toilet area 4 by the water quality acceptable standard of supply water, supplying the drinking water to the water service area A2, supplying purified and regenerated water to the water service area B3 and the flush toilet area 4, treating drainage A8 and drainage B9 discharged from each of the water service area A2 and the water service area B3 by a membrane separation activated sludge device 11, treating permeated water removed from the membrane separation activated sludge device 11 by a reverse osmosis membrane device or a nanofiltration membrane device 12, supplying permeated water removed from the reverse osmosis membrane device or the nanofiltration membrane device 12 to the water service area B3, and supplying concentrated water removed from the reverse osmosis membrane device or the nanofiltration membrane device 12 to the flush toilet area 4.
TAKEUCHI HIROSHI
FUSAOKA YOSHINARI
KITANAKA ATSUSHI
TAKAGI RYOTA
| JP2003080246A | 2003-03-18 | |||
| JP2004181295A | 2004-07-02 | |||
| JPH06240711A | 1994-08-30 | |||
| JP2000319944A | 2000-11-21 | |||
| JP2002306930A | 2002-10-22 | |||
| JP2002066536A | 2002-03-05 |
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