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2021 RAS project for African catfish & tilapia hatchery and grow-out in Sierra Leone

2021 RAS project for African catfish & tilapia hatchery and grow-out in Sierra Leone
Project Highlights

1. RAS Proposal & Quick Quotation 

• Fish Species: African Catfish /Tilapia

• Hatchery (x2) & Grow-out (x4)

• Total RAS Energy Consumption: 37.79KW (50% of total power) 

 

2. Project Plan 

▶ Invest RAS Project for African Catfish / Tilapia hatchery and grow-out

▶ Catfish hatchery to support planned 4 grow-out RAS and double the capacity for other customers

▶ Tilapia hatchery planned for 50% capacity of Catfish

▶ Grow-out RAS

• x3 RAS for 6 tanks with total 63.6 m3 water volume

• X1 RAS for 3 tanks with total 31.8 m3 water volume 

 

3. Grow-out RAS highlights (*3)

▶  Fish Species

• African Catfish

• Could also culture Tilapia but the biomass would be about 100 kg/m3

▶  RAS Parameters

• Tank numbers: 6

• Tank specifications: diameter 3.5m, height 1.3m, water level 1.1m, single tank volume 10.6m3

• RAS volume: 63.6 m3

• RAS water flow: 80 m3/hour

• Biomass (stock density): 300 kg/m3

RAS Size: 19 x 10= 190 m2

▶  Water Quality Parameters

• Water temperature: 26 - 30 o  C

• Outlet (minimum) DO: 5 mg/l

• PH: 6.5-8.0

• TAN: 0. 15 PPM

• Mechanical filtration precision: 75 microns

▶  More information

1. Electricity supply: single-phase/220V & 3-phase/380V

2. Warranty 3 years 

 

4. Tilapia hatchery RAS hightlight 

▶ Spawning (eggs to larval)

• eWater special design for tilapia (demersal egg) spawning

• Type II Incubator x 1

• Water flow: 0.45 m3 / hour

• Transfer larval to rearing tanks for further rearing

▶ Fry Rearing (larval to fingerlings)

• Tank numbers: 4

• Tank specifications:blue PP material, diameter 1200mm, height 1400mm, water level 700mm, with slanting angle 8 degrees, single tank volume 0.79 m3

• Total volume: 3.2 m3

• Water flow: 5 m3/hour

▶ Water Quality Parameters

• DO: 8-10 mg/l

• PH: 7.0-8.0

• TAN: 0.1 PPM

• Mechanical filtration: 20 microns

• Temperature: 26-28 o C 

Some Project Photos
               
               
               
               


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