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TAN-led sizing
Capacity planned around feed load, biomass and water quality goals.
Products · Biological treatment
Biological Filtration Systems
TAN-led design. Managed biofilter performance.
Fish release ammonia continuously. A mature biofilter gives nitrifying microorganisms protected surfaces where they convert total ammonia nitrogen (TAN) to nitrite, then to nitrate.
Product views
Equipment, installation and process
SUPPLIED PROJECT VISUALS
VIEW 01
Concrete MBBR, visualized
Concept view: concrete basin, aeration diffusers, suspended BioChip-style media and outlet-retention screens. Final tank geometry and selected media depend on the project.
Selection and design considerations
01
Species and peak feed rate
02
Feed composition and biomass
03
Water quality targets
04
TAN design load
05
Carrier quantity and reactor size
06
Water flow and aeration
07
Mixing and media retention
08
Monitoring and backup power
System at a glance
Design
TAN-led sizing
Biology
Selected cultures
Support
Operating SOPs
Configuration
Project-specific
Final capacities, materials, dimensions and operating limits are confirmed against the current model datasheet and project duty point.
02
Selected cultures
Startup strategy matched to operating water conditions.
03
Operating SOPs
Clear checks, records and maintenance routines.
Complete brochure information
Biological Filtration
TAN-led design. Managed biofilter performance.
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Biological Filtration
Engineered for aquaculture
Product overview
TAN-led design. Managed biofilter performance.
Commercial concrete MBBR concept with aeration and media retention.
01 / Design - TAN-led sizing
Capacity planned around feed load, biomass and water quality goals.
02 / Biology - Selected cultures
Startup strategy matched to operating water conditions.
03 / Support - Operating SOPs
Clear checks, records and maintenance routines.
Designed by Marine Blue Aquaculture Solutions
Illustrative product visual; final reactor and media are project-specific.
B02
Biology sized to your load.
Meet the process
Product description
A practical treatment stage for stable recirculating water.
Biological filtration in RAS
Fish release ammonia continuously. A mature biofilter gives nitrifying microorganisms protected surfaces where they convert total ammonia nitrogen (TAN) to nitrite, then to nitrate. This treatment helps control dissolved nitrogen waste as water is reused. Nitrate still requires a separate management plan.
Engineered around TAN production
We begin with species, peak feed rate, feed composition, biomass and water quality targets. The TAN design load informs reactor size, carrier quantity, water flow, aeration, mixing and media-retention details. Final capacity is defined for the selected operating case rather than a generic tank volume.
Commissioned as a living system
Suitable nitrifying cultures or established media can support startup, but biofilm capacity must be proven through measured TAN and nitrite removal. Feed and biomass are increased gradually while dissolved oxygen, pH, alkalinity and temperature are tracked.
Supported through operation
An operator SOP sets monitoring frequency, alert and action limits, records and corrective steps. Routine checks of air, flow, screens and media movement help protect performance as the farm's loading changes.
Build the biofilter around your production plan.
Share your species, peak daily feed, biomass, salinity and target water quality with Marine Blue.
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From TAN load to stable biofilm.
Our approach
TAN calculation + startup
A reliable result depends on biological capacity, hydraulic design and a startup procedure that operators can verify.
- 01
Calculate
Estimate average and peak TAN load from the production plan; document assumptions and growth allowance.
- 02
Configure
Select reactor type, working volume, carrier media, flow path, aeration and media-retention screens.
- 03
Start
Choose an inoculation approach suitable for salinity and temperature; raise the feed load progressively.
- 04
Verify
Trend TAN and nitrite with oxygen, pH, alkalinity, temperature and flow before increasing loading.
Selected bacterial cultures, verified in operation
A culture should be suitable for the actual freshwater or saltwater conditions and intended temperature. A named inoculant is only one part of startup; measured TAN and nitrite trends confirm when the filter can accept more load.
Operator-ready SOP
Define who measures each parameter, the sampling location and frequency, alert limits, response actions and the record to keep. Include checks for blowers, pumps, screens, media movement and backup power.
The output is a biofilter that can be measured, maintained and expanded.
B04
Built for biological treatment.
Concrete MBBR, visualized
Commercial MBBR + operations
Concept view: concrete basin, aeration diffusers, suspended BioChip-style media and outlet-retention screens. Final tank geometry and selected media depend on the project.
Do
- Remove solids upstream of the biofilter.
- Keep circulation and aeration available.
- Trend TAN, nitrite, pH and alkalinity.
Don't
- Treat clear water as proof of safe TAN.
- Apply full feed load before maturation.
- Expose active biofilm to unplanned disinfectants.
B05
Biofilter options & enquiries.
Choose your configuration
Product details
Technology is selected for the water, load and operations team.
| Technology | Configuration |
|---|---|
| Moving bed (MBBR) | Aerated, moving carriers; well suited to modular or concrete RAS basins. |
| Fixed or submerged bed | Stationary media; solids control and planned cleaning protect flow paths. |
| Trickling filter | Water passes over air-exposed media; needs even distribution and access. |
| Fluidized bed | Upflow suspends fine media; operating flow must remain controlled. |
Which option is right for my RAS?
We compare TAN load, available space, solids capture, energy use, maintenance access and operating water conditions before selecting the process.
What information is needed for a quotation?
Provide species, peak daily feed, maximum biomass, salinity, temperature, water flow, target TAN and nitrite, available area and expansion plans.
Let's configure biological filtration for your system.
Marine Blue can define the TAN design basis, reactor arrangement, startup SOP and performance checks for your project.
Complete product information
A clear, complete view of the product
Explore the full technical scope, applications, advantages and project considerations.
Biological Filtration Systems
Modular biological filtration • conceptual equipment rendering. Media and reactor configurations designed to support nitrification and biological water treatment.
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