Recirc

REX-M:
Matthias Mahnke
Feithierenstrasse 154
CH-3952 Susten

Mobile: +41 (0) 76 483 21 30
E-Mail: mm@rex-m.de
Skype: ichthyotech
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rex-m-ras-water-treatment-raceways-scr-round-tanks-pft

 

hel-x Biofilter MBBR Füllkörper black

 

Cluster_MG_6967.1

 

REX-M biofilter chips RAS Kreislaufanlage Nitrifikation

 

hel-x Biofilter MBBR Füllkörper

 

OTT-D-REX-disc-diffuser-on-AIRREX-piping-system

 

ott-magnum-airrex

 

Standardlängen und Membrantypen

 

REX-M UV Desinfektion Kreislaufanlage UV-disinfection RAS УЗВ

 

gso

 

neue-amaline-grau

 

amarex-krt

 

Aerzener-Drehkolbengeblaese_large

 

Elektror-2-stufige-Seitenkanalvdichter-2SD

 

kreislaufanlage-ras-piping-rohrleitung-formstuecke-fittings-pvc

 

sera_CVD1_C409.2

AquaOrbis

 

Raceway Kreislaufanlage RAS

 

Referenz Reference RAS Kreislaufanlage REX-M

 

PFT Kreislaufanlage RAS

 

Chefmontage Abu Dhabi - weaning & nursery

 

rex-m-ras-recirculating-aquaculture-system-process-technology-drumfilter-oxygenation-aeration-uv-disinfection-ozonation-pump-habitat-mbbr-biofilter

 

Stöhr-Füllkörper-Hel-X-e1429784499862

 

merke-rex-m_

 

loxy

 

Teller_halb klein

 

REX-M UV Desinfektion Kreislaufanlage UV-disinfection RAS УЗВ Ultraaqua 220W family portrait

 

REX-M Kreislaufanlage Mikrosieb Trommelfilter RAS microscreen drum filter УЗВ барабанный фильтр

 

smoevo

 

KSB-Spiralgehausepumpe-Sewabloc

 

Elektror-Seitenkanalverdichter-SD

 

delta-hybrid_large

 

kreislaufanlage-ras-piping-rohrleitung-pvc

 

sera_CTD_200-1

REX-M land-based Recirculating Aquaculture Systems (RAS) and partial RAS (PRAS) are characterized by unique flexibility, high system security, practice-oriented management, species-specific husbandry and attractive design.

 

 

REX-M differentiates system solutions for the production of eggs (broodstock, wintering & hatchery), fry (weaning), fingerlings (nursery), on-grown fish (on-growing) and food fish (grow-out & purging).

 

PFT-RAS: Parallel Tank Systems


Parallel Fed Tanks (PFT) can be taken from the system to be drained individually. Hydraulics can be adapted to the needs of species and the size of fish. PFT-systems always will be applied for weaning, nursery and small-scale RAS.

 

SCR-RAS: Raceway Systems


Without piping Series-Connected Raceways (SCR) allow a most-efficient recirculation for industrial-scale RAS and PRAS. With help of partition grids habitat of rectangular tanks can be divided individually.

 

 

Process technology


RAS are based on water transport and mechanical, physical, biological and chemical water treatment. Thus RAS minimize water demand and realize optimal control of farming conditions.

REX-M design and engineering is adapted to well-proven equipment of exclusive manufacturers. REX-M customers benefit from partner prices:

 

    BIOLOGICAL WATER TREATMENT


    Substances dissolved in water will be reduced by bacteria. Nitrification, meaning the elimination of fish toxic ammonia, is the bacterial oxidation of ammonium to nitrite (Nitrosomonas & Nitrospira) and nitrate (Nitrobacter). Nitrate either can be thinned out by exchange of water or can be reduced by bacterial denitrification.

    REX-M partner for packings is Christian Stöhr GmbH & Co.KG:

     

    REX-M biofilter RAS nitrification denitrification MBBR FBBR aquaculture

       

      PHYSICAL WATER TREATMENT


      Aeration supplies fish and bacteria with oxygen and degas unwanted gases (e. g. carbon dioxide & nitrogen).

      REX-M partner for diffuser systems is OTT System GmbH & Co. KG, REX-M partner for mechanical oxygenators is  OOO Merke (LINN Gerätebau GmbH) and REX-M Partner for trickling tower degassing is Christian Stöhr GmbH & Co.KG:

       

      REX-M aeration RAS oxygenation degassing aquaculture

       

      Germs will be reduced by the exposure to UV-light.

      REX-M partner for UV-systems is ULTRAAQUA A/S:

       

      REX-M UV disinfection RAS aquaculture

       

      MECHANICAL WATER TREATMENT


      Particular matter accumulates in the water during the production process. Settlers remove sediments. Microscreen drum filters remove suspended solids larger than 30 µm. Fine suspended solids will be controlled in submerged fixed bed reactors.

      REX-M partner for microscreen drum filters is OOO Merke (FAIVRE Sas), REX-M partner for fixed bed packings is Christian Stöhr GmbH & Co.KG:

       

      CHEMICAL WATER TREATMENT


      Using ozonation reduces not only germs effectively. Moreover ozone boosts degradation of organic compounds (yellow substance → turbidity ↓ // geosmin & MIB → off-flavour ↓) and increases both nitrite oxidation and redox potential.

      REX-M partner for ozone generation is Xylem Water Solutions Deutschland GmbH:

       

      WATER SUPPLY


      REX-M RAS are characterized by their Low-Head-Design. Propeller pumps are most efficient to recirculate the water. Submersible pumps, volute casing pumps and filter pumps are utilized for small-scale RAS, bypass filter applications and sewage. High-pressure pumps are utilized for injection of ozone, backwashing of drum filters and transport of well water.

      REX-M Partner for pumps is KSB AG:

       

      REX-M recirculation pumps water transport RAS aquaculture

       

      AIR SUPPLY


      Regularly REX-M is using frequency-controlled 1-ary side channel blowers for small, variable volumetric flow rates up to 500 m³/h and 250 mbar. Above rotary piston fans and 2-ary side channel blowers are applied

      REX-M partner for side channel blowers is Elektror airsystems GmbH and REX-M partner for rotary piston fans is Aerzener Maschinenfabrik GmbH:

       

      REX-M blower fan aeration air supply RAS oxygenation degassing aquaculture

       

      PIPING


      PVC-U pressure pipes up to nominal size DN250 are suitable to transport water and air. PVC-U sewage pipes are available up to DN500. For water applications of larger nominal diameters REX-M is planning pipes made from Polyethylen. 

      REX-M partner for PVC-U piping is LA.RE.TER. Spa:

       

      REX-M piping dosing RAS pH stabilization carbon source denitrification aquaculture

       

      DOSING


      PH-set point will be adjusted by demand-actuated supply of alkaline substances in form of lime and soda with help of dosing units. Denitrifying bacteria will be fed with carbon. 

      REX-M partner for dosing systems is sera GmbH:

      AquaOrbis

       

      Raceway Kreislaufanlage RAS

       

      Referenz Reference RAS Kreislaufanlage REX-M

       

      PFT Kreislaufanlage RAS

       

      Chefmontage Abu Dhabi - weaning & nursery

       

      rex-m-ras-recirculating-aquaculture-system-process-technology-drumfilter-oxygenation-aeration-uv-disinfection-ozonation-pump-habitat-mbbr-biofilter

       

      Stöhr-Füllkörper-Hel-X-e1429784499862

       

      merke-rex-m_

       

      loxy

       

      Teller_halb klein

       

      REX-M UV Desinfektion Kreislaufanlage UV-disinfection RAS УЗВ Ultraaqua 220W family portrait

       

      REX-M Kreislaufanlage Mikrosieb Trommelfilter RAS microscreen drum filter УЗВ барабанный фильтр

       

      smoevo

       

      KSB-Spiralgehausepumpe-Sewabloc

       

      Elektror-Seitenkanalverdichter-SD

       

      delta-hybrid_large

       

      kreislaufanlage-ras-piping-rohrleitung-pvc

       

      sera_CTD_200-1

      rex-m-ras-water-treatment-raceways-scr-round-tanks-pft

       

      hel-x Biofilter MBBR Füllkörper black

       

      Cluster_MG_6967.1

       

      REX-M biofilter chips RAS Kreislaufanlage Nitrifikation

       

      hel-x Biofilter MBBR Füllkörper

       

      OTT-D-REX-disc-diffuser-on-AIRREX-piping-system

       

      ott-magnum-airrex

       

      Standardlängen und Membrantypen

       

      REX-M UV Desinfektion Kreislaufanlage UV-disinfection RAS УЗВ

       

      gso

       

      neue-amaline-grau

       

      amarex-krt

       

      Aerzener-Drehkolbengeblaese_large

       

      Elektror-2-stufige-Seitenkanalvdichter-2SD

       

      kreislaufanlage-ras-piping-rohrleitung-formstuecke-fittings-pvc

       

      sera_CVD1_C409.2