Pureflow Bio · Manufacturer in India
RAS Skid Filtration Systems
RAS skid filtration systems bring selected treatment vessels, pumps, pipework and controls onto a coordinated base frame. Pureflow Bio manufactures project-specific skids in India for hatcheries, fish farms and aquarium life support.
What are RAS Skid Filtration Systems?
A RAS skid filtration system combines selected water-treatment equipment and connecting pipework on a coordinated assembly for a recirculating aquaculture system.
RAS Skid Filtration Systems applications
Fish farms and hatcheries
Best for coordinating treatment around species, life stage and daily feed.
Public aquariums and oceanariums
Best for exhibit-specific life support with defined access and redundancy.
Research and pilot RAS
Best for modular layouts with a documented experimental operating envelope.
How RAS Skid Filtration Systems work
Collect and screen the water
Bring the agreed filter flow through the mechanical stage before downstream treatment.
Treat dissolved and fine wastes
Use the selected biofilter and any specified protein skimmer, UV or ozone stage.
Return and monitor
Pump treated water back through the agreed return route and monitor the operating conditions.
RAS Skid Filtration Systems features and benefits
Coordinated base frame
Keeps the selected equipment and pipe connections in one planned arrangement.
Defined treatment train
Lets each stage be selected for its own hydraulic and treatment duty.
Accessible controls
Places the agreed monitoring and isolation points within the service layout.
Project-specific assembly
Adapts equipment selection to available space and utilities.
RAS Skid Filtration Systems gallery
Explore equipment views and configuration examples. Images do not define the complete scope of supply or document a verified customer installation.
RAS Skid Filtration Systems — assembly view
RAS Skid Filtration Systems — configuration example
RAS Skid Filtration Systems — equipment detail
RAS Skid Filtration Systems — layout example
RAS Skid Filtration Systems models and specifications
A project duty schedule replaces a universal model table. Catalogue illustrations do not establish a skid flow rating, electrical load or footprint.
| Selection item | What the quotation must define |
|---|---|
| Filter flow and head | Confirm for the proposed application and selected configuration |
| Species, biomass and daily feed | Confirm for the proposed application and selected configuration |
| Water temperature and salinity | Confirm for the proposed application and selected configuration |
| Required treatment stages and standby provision | Confirm for the proposed application and selected configuration |
| Skid footprint, utilities and drainage | Confirm for the proposed application and selected configuration |
Configuration and supply details
Confirm materials, connection standard, dimensions, electrical requirements and included components for the selected equipment. The quotation defines the approved scope.
Optional components
- Drum filter or pressure-media mechanical filtration
- MBBR or trickle biofilter with air blower
- Protein skimmer, venturi pump, auto-wash and foam-level control
- UV disinfection and ozone treatment
- Main feed pump and motor VFD
- Button console or optional PLC
- Electrical control panel with specified enclosure rating
- Water-level sensors and alarm indicators
- Heat pump
- ORP, pH and temperature sensors
- Flowmeter and pressure gauges
- Specified stainless-steel fasteners
Options are supplied only when included in the agreed quotation.
Engineering & procurement
Define exactly what your RAS skid includes
A RAS filtration skid is a packaged assembly, not a universal treatment recipe. The process flow diagram, equipment schedule and responsibility boundaries should describe the same selected configuration.
- Production & feed basis
- Separate treatment duties
- Selected skid & interfaces
- Commissioning & operator handover
Equipment supply vs complete RAS delivery
A skid quotation should identify its own treatment duties, pumps, valves, instruments and frame. Culture tanks, civil work, oxygen supply, building services and the complete farm operating plan are separate interfaces unless expressly included.
Size around the production plan
Start with species, life stage, peak biomass and feed. Check solids removal, TAN conversion, oxygen demand, carbon dioxide removal and make-up water independently. A 100 m³/h recirculation branch does not by itself define fish production capacity.
| Selection item | Specify or verify | Why it changes the selection |
|---|---|---|
| Selected base assembly | List every included vessel, pump, valve, instrument and connection | There is no assumed standard set of components across custom skids. |
| Application-dependent options | Protein skimming, UV, ozone, heating/chilling and advanced controls as individually specified | Options must suit water chemistry and the treatment objective. |
| Utilities and interfaces | Electrical connected/running loads, water, gas, drainage and connection levels | A compact frame still requires adequate site services and maintenance access. |
| Resilience | Duty/standby arrangement, power-loss response, alarms and bypasses | Agree which functions continue during each defined failure. |
| Acceptance and handover | Approved PFD, drawings, component datasheets, test plan, training and spares | Define acceptance criteria and responsibilities before manufacture. |
Use the RAS technology guide and planning tools for system calculations; use this page to define the commercial skid supply.
Discuss the technical requirements →How to select RAS Skid Filtration Systems
A skid cannot be selected from tank volume alone; biological loading, pump head and the required treatment stages must also be defined.
- Filter flow and head
- Species, biomass and daily feed
- Water temperature and salinity
- Required treatment stages and standby provision
- Skid footprint, utilities and drainage
Build your ras skid filtration systems enquiry brief
Record your design requirements for review. This tool does not calculate an unverified treatment capacity or automatically approve a model.
RAS Skid Filtration Systems installation and maintenance
Installation and integration
Agree a process diagram, equipment schedule and responsibility boundary before manufacture. Provide a level base, lifting route, isolation valves, drainage and the specified electrical supply.
Routine maintenance
Service each supplied component to its own instructions. Record screen cleaning, media condition, pump checks and calibration of the installed instruments.
Warranty, dispatch and installation
One-year equipment warranty
Confirm coverage and operating requirements in the quotation.
Dispatch within 15 working days
Dispatch follows order confirmation. Transport and site delivery time are additional.
Made in India
Manufactured by Pureflow Bio in India. Installation, commissioning and service across India are agreed for your project.
For complete turnkey projects, confirm the project schedule, utilities, site preparation, installation and commissioning responsibilities separately.
Request a RAS skid filtration quote
Share your application, preferred model and site requirements. Pureflow Bio will confirm the selected configuration and scope in your quotation.
RAS Skid Filtration Systems FAQs
What is a RAS filtration skid?
It is a complete recirculating filtration system built on one frame: typically a drum filter, biofilter, UV, pumps and pipework, ready to connect to your fish tanks. It is assembled and checked before it arrives, so your site work is minimal.
Who is a RAS skid suited to?
Hatcheries, nurseries, research facilities, quarantine units and smaller grow-out farms that want a proven, compact system without designing each part themselves. It is also a good way to start a RAS before scaling up.
What size skid do I need?
Skids are sized by the feed your fish eat each day, because that sets the waste load, together with the water volume and flow. Tell us your species, target production and tank volume and we'll specify the skid.
Can the skid be expanded later?
Yes. Many farms add more skids as they grow instead of building one huge system. This also gives you redundancy: if one unit needs service, the others keep running.
What utilities does it need?
Power for the pumps, blower and UV, a drain for filter waste and space with access for service. We confirm the electrical load and footprint in your quotation.
Do you help with installation and commissioning?
Yes, where it is part of the agreed scope. We can guide connection, start-up and biofilter cycling so the system is stable before you stock fully.
Plan your complete aquaculture or aquarium system
Connect ras skid filtration systems to the wider treatment process
Discuss equipment integration, utilities and a coordinated project scope with Pureflow Bio.