DAIWA ACE

This is a floating bed filtration system that uses floating filter media made from a special foamed resin. It can perform microfiltration and biofilm filtration simultaneously. By adjusting the filtration speed and contact time, a single unit can perform two functions: microfiltration for the purpose of removing blue-green algae, and biofilm filtration for the purpose of improving water quality. Furthermore, it requires a compact installation space.

• Uses floating filter media made of foamed resin (upward flow type)
• Backwashing is done by aeration.
• Large contact area per volume.
• It can be used for a wide range of water treatment, including biological filtration and microfiltration.

• Simply replenish worn filter media. No need to replace filter media.
• Less backwash water.
• The facility has a compact footprint.
• Even with a fast flow rate, it is less likely to clog and can treat large volumes of water.

• Verification number: 080-1301
• Demonstration period: November 2013
• Location: Tokyo, Imperial Palace Outer Garden Moat, Moat Water Purification Facility
• Turbidity, a verification item, was improved from a raw water concentration of 42 degrees to a treated water concentration of 7 degrees.
• Achieved the target value of "turbidity below 10 degrees" and demonstrated removal efficiency of 86%.

* Glossary: The Environmental Technology Demonstration Project is a project in which a third-party organization demonstrates the environmental conservation effects of environmental technologies and publishes the results on the Ministry of the Environment's website to support the spread of environmental technologies. As mentioned above, demonstration experiments conducted by public institutions have also produced results.