Japan Institute of Wastewater Engineering and Technology (JIWET) awards Construction Technology Review and Certification to METAWATER's Aeration Agitator for Standard Tanks
- Aeration Agitator for Standard Tanks Realizes Superior Energy-Saving Performance and Easy Maintenance Work -
On June 3, 2015, the award ceremony for the Construction Technology Review and Certification (sewerage technology) for FY2015 took place at the Japan Institute of Wastewater Engineering and Technology (JIWET) (hereinafter referred to as JIWET), a public interest incorporated foundation. JIWET awarded METAWATER's aeration agitator for standard tanks (aeration agitator with a drive unit at the top of the tank; hereinafter referred to as the Apparatus) with a Construction Technology Review and Certification.
The Apparatus, a combination of a newly developed agitator with superior energy-saving performance and a diffusing cylinder that supplies micropores, is an aeration agitator for standard reaction tanks in sewerage treatment facilities (for anaerobic-aerobic tanks and aerobic tanks).
The Apparatus diffuses and circulates micropores, supplied from the diffusing cylinder at the bottom of the tank, using a water stream from impellers in order to supply oxygen effectively to the reaction tank with less power, resulting in considerable energy savings. Moreover, installing the drive unit at the top of the tank has made the maintenance work easy.
Construction Technology Review and Certification (Sewerage business)
The Construction Technology Review and Certification (Sewerage Technology) is intended to examine new technologies developed by private companies from a technological perspective and certify their performance, characteristics, etc. objectively for the purpose of promoting the utilization of new technologies in the sewerage business. A report is prepared on technologies with the issued certificate, attached to the certificate, and distributed to municipalities across the nation so that it can be widely used as a reference when organizations decide whether to introduce new technology in public works.
Characteristics of the Device
Superior energy-saving performance
The necessary stirring power density of the Apparatus in the aerobic operation mode is 4 W/m³ or less. Total power consumption (agitator and aeration blower) be reduced by about 30%, compared with conventional equipment (density: 5–6 W/m³). In addition, in anaerobic operation mode, the said density is 1 W/m³ or less, saving stirring power by about 80% compared with conventional equipment. The Apparatus boasts superb energy-saving performance.
Easy maintenance work
With the Apparatus having the drive unit at the top of the tank, routine inspections can be made easily at the top of the tank. Compared to conventional equipment, there are fewer items for inspection and maintenance, making maintenance work easy.
At the Award Ceremony
Aeration Agitator for Standard Tanks