INTRODUCTON TO WATER QUALITY IN AQUACULTURE Unit 4'1

1
INTRODUCTON TO WATER QUALITY IN AQUACULTUREUnit
4.1 Dissolved Oxygen/Aeration
Auburn University Department of Fisheries and
Allied Aquacultures
2
Types of aerators for aquaculture
Paddlewheel Propeller aspirator Vertical
pump Pump sprayer Diffused - air
3
Paddlewheel aerator
4
Propeller - aspirator
5
Vertical pump
6
Pump-sprayer aerator
7
Diffused air
8
Aerator Use
Supplemental - permanent
Emergency - mobile
9
How does an aerator work?
Paddlewheel, vertical and pump sprayers
atmosphere
oxygen
atmosphere
oxygen
10
How does an aerator work?
Propeller aspirator and diffused air
atmosphere
o2
o2
o2
o2
o2
o2
water
o2
o2
o2
o2
11
Advantages of aerator use
12
Effects of aeration
13
Aerator placement in ponds
14
End of Unit