impacts of electrochemical oxidation on marine ras · table of contents 1. apria systems: who we...
Post on 22-Aug-2020
6 Views
Preview:
TRANSCRIPT
IMPACTS OF
ELECTROCHEMICAL OXIDATION
ON MARINE RAS
TABLE OF CONTENTS
1. APRIA SYSTEMS: WHO WE ARE
2. ELOXIRAS® ELECTROCHEMICAL OXIDATION IN RECIRCULATING
AQUACULTURE SYSTEMS: CONCEPT
3. ON-FIELD RESULTS
4. ELOXIRAS®: MOST INNOVATIVE ASPECTS AND MAIN IMPACTS
5. MARKET OPPORTUNITIES
www.eloxiras.com
1
APRIA Systems S.L.
Parque Empresarial de Morero
Guarnizo, Cantabria, Spain
THE COMPANY
• SME innovative company specialized in
consultancy and engineering services.
• Founded in March 2006 as a spin-off
from R&D projects managed by the
University of Cantabria.
• Activity strongly influenced by R&D
actions.
• Highly specialized human resources.
Innovative alternatives for the
chemical and related industries,
providing bespoke solutions to fulfil
the environmental regulations.
INTRODUCTION LOCATION
2. ELOXIRAS®: CONCEPT
www.eloxiras.com
TECHNOLOGY
Based on electrochemical oxidation technology, the
water contaminants are removed by REDOX
reactions promoted by special catalysts materials
coated on electrodes.
Coated catalysts are activated by an electric
potential as unique driving force of the treatment.
APPLICATION Regeneration and reuse of marine and brackish water in Recirculating
Aquaculture Systems.
ELOXIRAS®: ELECTROCHEMICAL OXIDATION IN THE
RECIRCULATING AQUACULTURE SYSTEMS
2. ELOXIRAS®: CONCEPT
www.eloxiras.com
EFFICACY
POLLUTANT
INTEGRATED
CONVENTIONAL
RAS
ELOXIRAS®
TAN Moderate Excelent
Nitrite Moderate High
Nitrate Low-Moderate Low-Moderate
Organic Matter Low - Moderate Low-Moderate
Pathogens Good-ExcelentGood-
Excelent
www.eloxiras.com
2. ELOXIRAS®: CONCEPT
INTEGRATION
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
Instituto de Investigación y Tecnología Agroalimentarias (IRTA), Tarragona, SPAIN.
VALIDATION/DEMONSTRATION CHARACTERISTICS
- Cultured Species: Seabass & Seabream; Biomass densities 20 – 45 kg/m3 (0.17 – 0.37 lbs/gal)
- Culture Tanks: 2 Units; Vtotal = 20 m3 (5,280 Gallons).
- Recirculation flowrate: 20 – 30 m3/h (88-132 GPM)
- Duration: 1 Year
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
EFFICACY: ELECTROCHEMICAL REACTOR RESULTS
> 3 logarithms
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
EFFICACY: POST-TREATMENT / AC FILTER
Parameter Units Max. Value obtained Quality criteria
Total Chlorine mg Cl2/L 0.1 -
TTHMs μg/L < LOQ(b) (3.01) 100 μg/L (Directive 98/83/EC)
BrO3- mg/L n.d.(a) 0.07 mg BrO3
-/L (IMO, 2008)
ClO3- mg/L 0.57 0.7 mg ClO3
-/L (WHO, 2011)
ClO4- mg/L n.d.(a) -
(a) n.d.: not detected ―below the limit of detection (LOD) of the method (LOD of bromate: 0.05 mg/L; LOD of perchlorate: 1 mg/L)―.(b) < LOQ: below the limit of quantification of the method (5 μg/L).
On-site
recovery of
GAC filter
efficacy
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
EFFICACY: CULTURE TANKS WATER QUALITY
Parameter UnitsAverage value (± Std
deviation)Quality criteriaa
Oxygen mg O2/L 8.70 ± 0.57 > 5
Temperature ºC 20.4 ± 2.1 22
pH - 7.18 ± 0.20 6.5 – 8.5
ORP mV 170.7 ± 88.5 -
TSS mg/L 20 ± 12 10 – 80
TAN mg N-NH3/L 0.55 ± 0.42 < 3
Nitrite mg NO2-/L 0.08 ± 0.11 < 1
Nitrate mg N-NO3-/L 2.5 ± 3.1 0 – 90
COD mg O2/L < 30 -
Total bacteria CFU/mL 1.102 – 2.103 -
Vibrio spp CFU/mL 3.101 – 7.102 -
a Quality criteria according to Timmons et al., 2009.
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
FEEDING AND GROWTH PERFORMANCE
Culture cycle 10 g 350 - 450 g
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
FEEDING AND GROWTH PERFORMANCE
Pre-growing Ongrowing
Parameter Expected
values ELOXIRAS®
Expected values
ELOXIRAS®
Biomass density (kg/m3) 20 36.1 35 48.9
SGR (%/day) 3.8 5.08 0.56 2.02 SFR (%/day) 3-8 5.03 0.5-3.5 3.81
FCR (kg feed/ kg fish produced)
1.2-1.4 1.27 1.5-2 2.07
Pre-growing Ongrowing
Parameter Expected
values ELOXIRAS®
Expected values
ELOXIRAS®
Biomass density (kg/m3) 20 38.6 23 43.7
SGR (%/day) 3.8 4.30 0.6 1.63 SFR (%/day) 3-8 5.19 0.5-3.0 3.69
FCR (kg feed/ kg fish produced)
1.1-1.4 1.48 1.5-2 2.59
Seabream
Seabass
Fish welfare was supported by the histopathologic studies conducted by
internationally renowned experts from Univeristat Autònoma de Barcelona (Spain)
who pointed out the remarkable good condition of the fish, with the absence of
significant anomalies or injuries in all the examined specimens.
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
Performance indicators
Make-up
water
consumptio
n
200 – 200 L/kg (24 – 36 gal/lb) fish produced:
Intensive Recirculation
3. ELOXIRAS®: ON-FIELD RESULTS
www.eloxiras.com
Performance indicators
O&M Costs
Energy
Consumptio
n
< 0.18 kWh/gTAN (79 kWh/lb TAN)
4. ELOXIRAS®: MOST INNOVATIVE ASPECTS AND MAIN IMPACTS
www.eloxiras.com
Main innovations compared with existing technology include:
- ELOXIRAS® only requires electricity as driving force, avoiding the need for other utilities as gases, chemicals or
heat to work.
- Removal of concerned pollutants with only one technology, avoiding the need of integrating specialized
processes as biofilters, UV, ozone, etc. ELOXIRAS® electrochemical cells allows the simultaneous removal of:
TAN, nitrite, nitrate, organics and bacteria.
- Higher efficacy in the removal of TAN (> 90%) than conventional biofilters, due to the use of special materials
within the electrochemical cells that act as catalysts.
- Alternative reaction routes to biological nitrification in the removal of TAN, that avoids the production of toxic by-
products, as nitrate. Even nitrate is removed as a result of the reduction reactions promoted.
- Unlike biofiltration technology, ELOXIRAS® requires neither start-up periods for biomass maturity, nor biomass
support during maintenance operations. This allows ELOXIRAS® to overcome existing alternatives for
increasing flexibility and adaptability to production needs.
www.eloxiras.com
- ELOXIRAS® allows a paramount intensification of marine RAS, enhancing its productivity and reducing the
environmental impact.
- Integration of additional technologies for disinfection or even denitrification is not required, unlike many other
conventional RAS based on biological filtration. Important savings on final water treatment processes before
discharge to the media can be obtained.
- Production capacities observed can be increased by 30% in comparison with typical values, while maintaining
the farming performance in relation to feeding and fish growth.
- Make-up water intake can be reduced to just 200 – 300 L per kg of fish produced ―becoming an intensive
RAS―; more than 50% reduction compared to conventional biofilter-based RAS.
4. ELOXIRAS®: MOST INNOVATIVE ASPECTS AND MAIN IMPACTS
5. MARKET OPPORTUNITIES
www.eloxiras.com
ELOXIRAS® SERIES
BIO Series
Focused on quarantine and bio-
security facilities for any RAS scale. It
offers an enhanced control of
pathogens due to the disinfection
capabilities, also contributing to achieve
high isolation levels.
MINI Series
For small scale RAS facilities. It offers
compactness and adaptable treatment
capacity.
HYBRID Series
Ideal for new or existing large RAS
facilities. It contributes to the increase
of current production capacity, as well
as to the decrease of water use.
LOGISTIC Series
Focused on typical truck or well-boat
transport operations from hatcheries
to growing facilities. It offers major
autonomy for long distances and larger
biomass capacity thanks to its
compact design.
5. MARKET OPPORTUNITIES
www.eloxiras.com
PRODUCT VERSIONS AND MODELS AVAILABLE
System controlled
manually.
BASIC
Fully automated.
COMFORT
Remote control via web
browser.
4.0CONCEPT
Main technological
solution.
Parque Empresarial de Morero
Parcela P.2-12, Nave 1 - Puerta 5
39611 Guarnizo, Cantabria (España)
Tel: +34 942 07 81 47
e-mail: comercial@apriasystems.es
www.eloxiras.com
top related