![](https://www.shiev.shi.co.jp/wp-content/uploads/2017/03/3-3-30図2.jpg)
SUMIRATOR II vertical shaft-type aeration equipment (applicable for straight waterway section of oxidation ditch)
In response to the requests of customers wishing to use maintenance-free aeration equipment at a straight waterway section of an oxidation ditch, we have developed this new vertical shaft-type aeration/agitation equipment, SUMIRATOR II, by combining the standard SUMIRATOR model with specially shaped baffle plates.
![](https://www.shiev.shi.co.jp/wp-content/uploads/2017/03/3-3-30図1.jpg)
Features of the SUMIRATOR II
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Installation flexibility
Because the equipment can be installed anywhere in an oxidation ditch, it is suitable for upgrade from a horizontal/bent shaft-type unit.
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Adaptability to various operating methods
The equipment operates flexibly to suit a variety of water treatment methods such as nitrification denitrification treatment and for bulking prevention.
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Minimal maintenance
Since the maintenance points are gathered on the slab, the maintenance workload and expenses can be reduced.
![](https://www.shiev.shi.co.jp/wp-content/uploads/2017/03/3-3-30図2.jpg)
![](https://www.shiev.shi.co.jp/wp-content/uploads/2018/04/en_img_3-3-30-3.jpg)
Examples of Application
Vertical shaft-type aeration equipment for renovation from horizontal shaft-type aeration equipment