Skip to main content
This system plays a major role in conserving water.
Securing water for daily living is an important issue for any city. However, if rain doesn't fall or drought continues for a long time, there will inevitably be a water shortage. However, the current situation is that many buildings use the precious drinking and cooking water in toilets, etc. Our building gray water system is a system that purifies waste water that has been used once and re-uses it in building toilets and as non-potable water.
|Application||Water for flushing toilets|
|Odor||There must not be any abnormal odors|
|Appearance||Must be transparent and have almost no color|
|E. coli||Must not be detected|
|Free residual chlorine||0.1 mg/L or more|
|BOD||20 mg/L or less|
|COD||30 mg/L or less|
From the Waste Water & Rain Water Reuse System Plan Criteria and descriptions (2004 version)
(1) Use a screen to remove large debris ( (2) Homogenize water amount and water quality in adjustment tank ( Do biological treatment in aeration tank ( (3) Use the rotating flat membrane separator AQUA UFO to do membrane treatment ( (4) Remove colors and odors in the ozone reaction tower ( (5) Sterilize.
Q. What can it be used for?
A. It can be re-used as toilet flushing water.
Q. What about holidays?
A. On holidays there is less waste water, but this system operates intermittently, operating and stopping according to the amount of waste water, so it is a streamlined treatment method. Operation can be restarted easily after a holiday is over.
Q. How is the removed debris processed?
A. It is separately incinerated and disposed of as industrial waste.
Q. Is there an odor or color?
A. We treat the water using ozone reaction devices and other devices, so there isn't enough color or odor to be a problem.
Q. How much tap water can be saved?
A. You can expect to save 30-50%. (Our test results)