This presentation and video is part of the Training Fact Sheets Guide on grading, handling, transportation, conditioning and storage of blue mussels

1. Swansea University
MusselsAlive2013
Photo by Sara Barrento
Sara Barrento
Ingrid Lupatsch
Alex Keay

2. The
Depuration trial

3. Conditions of approval
Bulk bins require a minimum
flow rate 6500L/h per bin for
250kg of mussels to keep
minimum oxygen levels, that is
above 5 mg/L ... to keep oxygen > 5mg/L or 50%

4. Conditions of approval
But pumping water is expensive,
as it consumes energy and
increases the carbon footprint…

5. Can oxygen be maintained
above 5 mg/L at flows lower
than 6500 L/h?

6. 6500L/h
6500L/h
3000L/h
3000L/h
2500L/h
2500L/h
Different Flows Regimes tested for 42 h

7. Mussels were harvested
and graded as usual

8. … and placed in the bins
12.6 ̊C

10. 12.6 ̊C

11. Oxygen sampling
20 hours
24 hours
42 hours
30 min
90 min
7 hours

12. False Floor
FF
Bottom
Middle
MC
Top
Drain

13. Results
Oxygen (mg/L) at 12.6 ̊C
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
FF Bottom Middle MC Top Drain
Oxygen(mg/L)
2500 L/h 3000L/h 6000 L/h6500 L/h
* *

14. 79 %
81 %
Drain
83%
87 %
85 %
72 %
83 %
77 %
Results
Oxygen (%)

15. Can oxygen be maintained
> 5 mg/L at flows lower
than 6500 L/h?
Yes, 2500 L/h and
temperature
<12.6⁰C

16. Dissemination
“A novel event in this conference this
year was to present the results of
science projects in which ASSG is
interested or a partner. Sara Barrento
got this off to an excellent start with a
lively presentation on MusselsAlive.”
The Grower, December 2012

17. Dissemination
A news article was written by Sara
Barrento and published on the last
edition of the Grower (March 2013).

18. Dissemination
A fact sheet was created to
disseminate the main results
and recommendations to the
industry