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titulo de la presentacion
16/12/2015
Monitoring, alarm and
emergency systems in
Aquaculture.
Ricard Carbó
RECIRCULATION SYSTEMS & THEIR
APPLICATION IN AQUACULTURE.
Zaragoza (Spain) 14 – 18 Dec. 2015
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Monitoring, alarm and emergency
systems in Aquaculture.
What do I have to control in RAS?
Types of control.
Design of control systems.
Maintenance
What do I have to control in RAS?
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Intensive recirculation
systems has increased
significantly the biomass
production per volume of
water, and in the same
proportion has increased
the risk of catastrophic
losses due to equipment or
management failures..
Murphy's Law:
“ if anything can go wrong,
it will “
What happen in a RAS ?
What do I have to control in RAS?
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16/12/2015
Every Kg of food I add
It’s produced and you have to
remove:
0.25 – 1 Kg CO2
0.25 – 0.5 Kg solid waste
0.02 – 0.04 Kg TAN (NH4+ + NH3)
pH
O2
Alkalinity reserve You must add:
0.25 – 1 Kg Oxygen
0.18 – 0.4 Kg AlKalinity
What do I have to control in RAS?
Water quality parameters:
Temperature, pH, Alkalinity, Salinity, Disolved Oxygen, Total
suspended solids, Ammonia, Nitrite, Nitrate, Carbon
dioxide,Total gas pressure, other contaminants (Iron,
Manganese, sulfur dioxide…)
Facility parameters:
Level of reserve & fish tanks, Power supply, pumping (water,
air) fire alarm, security alarm, Oxygen generator, etc…
Management parameters:
Flow rate (air, water), daily feed, chemical additions,
biomass, fish size, make up water, photoperiod, …
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Classification as a function of
the reaction time to avoid a catastrophe
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Power supply
Oxygen level Few minutes
Tank level, RedOx Minutes
Pumping (water, air) Minutes
pH / Alkalinity reserve,
Temperature, Total dissolved
gases, CO2 Few hours
NH3+, NO2
- Some hours
NO3- , Diesel level Days
Types of control
Classification as a function of type of signal:
Digital (On/Off) Analog (4-20 mA)
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Power supply Oxygen level
Tank level RedOx
Pumping (air) Pumping (water)
Diesel level pH
Temperature
CO2
Total dissolved gases
NH3+, NO2
- NO3-
TSS,
Chemical analyses
NH3+, NO2
- NO3-, TSS
Control and Monitoring levels
ALARM MONITORING CONTROL
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Design of control systems
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Power supply
Monitoring voltage supply & generator status
Design of control systems
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Water tank level control
Tank level
Ultrasonic Level Transmitter
Design of control systems
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Monitoring & Control of RedOx potential
RedOx
Design of control systems
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Monitoring & Control of flow rate
Pumping water, air
Paddlewheel Flowsensor
Ultrasonic Airflow monitor
Design of control systems
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Monitoring & Control of pH / Alkalinity
pH, Alkalinity reserve
4 – 20 mA
Design of control systems
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Monitoring & Control of Temperature
Temperature
Infrared
Pt100
Pt100
Design of control systems
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Monitoring & Control of NH3+, NO2
- NO3-
NH3+, NO2
- NO3-
Fresh
water only
Design of control systems
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Monitoring & Control of TDG, CO2, N gas
Total dissolved gases
Design of control systems
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Monitoring & Control of Oxygen
Oxygen
4 – 20 mA
Design of control systems
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Temperature control
Salinity Control
Oxygen control
Flow rate control
PLC
Design of control systems
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Design of control systems
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PLC, Programmable logical controller
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CORPORATE LAN
CONTROL LAN
DATA REGISTER
IPHONE
TABLET ROUTER
WIFI
PLC REDUNDANT PLC
PLC PLC PLC PLC PLC
Design of control systems, case 1
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Design of control systems, case 2
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www.cos-inc.com
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Design of control systems, case 3
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www.aquaticeco.com
Design of control systems, case 4
SISTEMA SCADA : Caso IRTA
Design of control systems,
Predictable Maintenance
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Design of control systems,
Predictable Maintenance
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Mo
nit
ori
ng
, a
larm
an
d e
me
rge
nc
y
syste
ms
in
Aq
uac
ult
ure
.
