At Ovidius Aqua Line there are Libelium IoT sensors installed to better identify the stress factors in precise context. For the iPREMAS project, the water quality parameters to be monitored are: Dissolved oxygen,Ph, Temperature, Water level, Nitrates and Nitrites.

Until now we have installed a Smart Water Extreme station from Libelium with these sensors/probes :

PHEHT – Temperature, pH, ORP

C4E – Temperature, Conductivity, Salinity and TDS

MES 5 – Temperature, Sludge Blanket, SS (suspended solids), Turbidity

VEGAPLUS C21 - Distance

OPTOD – Temperature, Oxygen (%, mg/L and Ppm)

The data acquired by the sensors (every 20 min) are live transmitted to the cloud platform, and can be visualized using Grafana. An alarming system has been developed for preventing water quality parameters to get out of optimal range. When a parameter gets out of range, a message is sent in the Telegram app with a short description of the problem (e.g. Temperature is out of range 9oC – 16oC).

• Technical data Recirculating Aquaculture System (RAS)
  
  

• Species of Fish used (tested) in the laboratory 

Rainbow Trout: 6000 pcs x 300 grams / piece

Sturgeon: 150 adult sturgeon 5-10 kg / piece 

(insereaza poza cu sturioni in bazin)

• Identifying the stress factors in precise context

• variations of dissolved oxygen percentage:

- due temperature variations 

- feeding process

- Low water flow in the recirculant system

• high nitrate levels,

                         - feeding process

                        - biofilter malfunction

                         -  low performance of biofilter

• low water recirculation frequency/debit

                         - mechanical malfunction- power outage

• Low feed absobtion and high mortality risk

– due to high water temperature during summer months

• Water quality parameters monitoring

Current water quality parameters monitored and methods of monitoring :

• daily – oxygen (oxygen meters), temperature (thermometer) and water levels (visual observation)
  • weekly  -nitrates and nitrites (paper tests) and pH level (pH-meter)
  • monthly  - other parameters

• Sensors requirement:
  
  
  • Dissolved oxygen
  • Ph
  • Temperature
  • Flowmeter
  • Water level sensor
  • Nitrates
  • Nitrites

Grafana – iPremas

Installation process