Dryden Aqua fine bubble Air Diffusers.... Aeration efficiency

1 x diffuser code 7009, 3m long 10 cubm/hr will supports up to 100PE population equivalent is sewage effluent treatment. If the tank is less than 3m in depth, use 1 diffuser per 50pe.

1 x diffusers code 6.2.10, 3m long running at 10 cubm/hr will dissolved into the water between 20kg and 50 kg of oxygen per day, the deeper the aeration tank the higher the efficiency.

Transfer efficiency,  for 1 kw of energy expended  5 kg of oxygen will be dissolved into the water

In order to size an installation for waste water treatment, determine the COD loading in kg/hr.  For example is the water flow is 50m3/hr at 400mg/l COD20 kg/hr = 20kg of COD/hr.  In order to treat this water you will need 20 x diffuser code 70008 delivering 10 x 20m3.hr of air = 200m3/hr of air.

The Dryden Aqua diffusers are usually twice as efficient as any other diffuser on the market and up to 4 times more efficient than surface aerators that can waste a huge amount of energy as kinetic energy simply throwing the water up into the air. 4% of all the energy used in the UK is aeration of wastewater.  Dryden Aqua air diffusers could save up to 50% of tis energy.

 

Diffusers length
metres
codeair flow
cubm/hr
( +/- 20%)
Oxygen Transfer
KW of O2/day per diffuser
at different depths at 20 deg C and
20% O2 saturation
     

2m water depth

3m water depth

5m water depth

0.33

7000

1

2

2.5

3

0.66

7001

2

4

5.0

6

1.00

7002

3

6

7.5

9

1.33

7003

4

8

10

12

1.66

7004

5

10

12

15

2.00

7005

6

12

15

18

2.33

7006

7

14

17

21

2.66

7007

8

16

20

24

3.00

7008

9

18

22

27

3.00

7009

9

18

22

27

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