| 摘要 |
<p>PURPOSE: To provide a bracket fastening structure for a mechanical aeration device which can easily correspond to the variation in the water level in a tank of a waste water purification tank of FRP. CONSTITUTION: A mechanical aeration device 2 is inserted into a waste water purification tank 1 made of FRP from an opening 6 on the top of the tank 1 and a bolt 8a attached to a base seat 8 which is set at a preidetermined angle in the tank 1 is inserted into an elongated hole provided in a bracket 7 of the device 2 so as to be threadedly engaged therewith. Next, a bolt 8b is inserted into a hole provided in a bent portion 7b formed by bending the bracket 7 and a hole of an L-shaped steel 9 attached to the base seat 8 so as to be threadedly engaged therewith, thereby to fix the device 2 in the tank 1, so that the setting position of the device 2 can be moved corresponding to the water level of the tank 1.</p> |
