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Selection and performance
of biocarriers for aquacultures
with water reuse
Christoph Grecki
WR IKRA DABIE
Poland
The fish hatchery and farm WR Dabie, Poland
Targets of the investigations
to improve the efficiency of the water recycle
plant via increased nutrient removal, meaning...
NH3/NH4 NO2 NO3Nitrosomonas Nitrobacter
fish toxic at
>1,0 mg/L
tish toxic at
> 0,5 mg/L
non toxic
at 50 mg/L
Pathways and...
Test plant and mode of operation
Test plant : Biofilter with V = L volume, each filled with
biocarrier
Biocarrier : PE car...
The biofilter pilot plants
PE-carrier LEVAPOR PU foam Ceramics
780 m²/m³ > 20.000 m²/m³ 1.500 m²/m³ 400 m²/m³
inlet
Removal of ammoniacal nitrogen by PE vs. LEVAPOR carrier over a week
CONCLUSIONS
• In all tests LEVAPOR carrier have achieved highest degree
of removal both for ammoniacal as well as for nitr...
LEVAPOR biocarrier have been designed in labs.
Dimensions: 20x20x7 mm – Surface : 1,34 mio. m²/m³
Bulk weight: 30 kg/m³ - ...
Specialty: high content of powdered activated
carbon
enables unique effects, not only simple cell adhesion
.
Scheme of a biofilter using biocarriers
The new biofilter to be filled with LEVAPOR
Application of Levapor Carriers for nitrification-denitrification in Recycled Aquaculture Systems
Application of Levapor Carriers for nitrification-denitrification in Recycled Aquaculture Systems
Application of Levapor Carriers for nitrification-denitrification in Recycled Aquaculture Systems
Application of Levapor Carriers for nitrification-denitrification in Recycled Aquaculture Systems
Application of Levapor Carriers for nitrification-denitrification in Recycled Aquaculture Systems
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Application of Levapor Carriers for nitrification-denitrification in Recycled Aquaculture Systems

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The presentation describes a case study of pilot testing conducted at a leading polish Aqua culture industry to compare the efficacy of Levapor Carriers in Aqua culture Recycle Systems

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Application of Levapor Carriers for nitrification-denitrification in Recycled Aquaculture Systems

  1. 1. Selection and performance of biocarriers for aquacultures with water reuse Christoph Grecki WR IKRA DABIE Poland
  2. 2. The fish hatchery and farm WR Dabie, Poland
  3. 3. Targets of the investigations to improve the efficiency of the water recycle plant via increased nutrient removal, meaning • to find a more efficient biocarrier for the removal of fish toxic compounds,than existing plastic carriers • to define the biokinetic parameter of the N-removal • to develop an optimized technology for the N-removal.
  4. 4. NH3/NH4 NO2 NO3Nitrosomonas Nitrobacter fish toxic at >1,0 mg/L tish toxic at > 0,5 mg/L non toxic at 50 mg/L Pathways and fish toxicities of inorganic nitrogen compounds N2 denitrification
  5. 5. Test plant and mode of operation Test plant : Biofilter with V = L volume, each filled with biocarrier Biocarrier : PE carrier 780 m²/m³ , LEVAPOR >20.000 m²/m³ PU foam 1500 m²/m³ , Keramzit 400 m²/m³ Mode of operation : a filtered and aerated streams of the recycle water were forwarded through the non colonized carrier layers at xy sec retention time. Sampling and analyses : grab samples were analysed twice in a week, NH4, NO2 and NO3 were determined.
  6. 6. The biofilter pilot plants
  7. 7. PE-carrier LEVAPOR PU foam Ceramics 780 m²/m³ > 20.000 m²/m³ 1.500 m²/m³ 400 m²/m³
  8. 8. inlet Removal of ammoniacal nitrogen by PE vs. LEVAPOR carrier over a week
  9. 9. CONCLUSIONS • In all tests LEVAPOR carrier have achieved highest degree of removal both for ammoniacal as well as for nitrite nitrogen • The LEVAPOR supported nitrification achieved a ca. 100 % higher efficiency than the PE carrier supported biofilter • Due to high porosity and carrier surface, the LEVAPOR supported reactor has achieved a remarkable NO2-removal • The LEVAPOR supported biofilter removed 300% more (NH4+NO2)N than the PE carrier supported filter • On basis of the achieved results the company has decided to apply LEVAPOR biocarrier in the new biofilters.
  10. 10. LEVAPOR biocarrier have been designed in labs. Dimensions: 20x20x7 mm – Surface : 1,34 mio. m²/m³ Bulk weight: 30 kg/m³ - Water binding capacity ~100 kg/m³ Wetting: within few hours – Biofilm generation: 120 min.
  11. 11. Specialty: high content of powdered activated carbon enables unique effects, not only simple cell adhesion .
  12. 12. Scheme of a biofilter using biocarriers
  13. 13. The new biofilter to be filled with LEVAPOR

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