RAS FILTRATION SYSTEM SOLUTIONS

Complete RAS Filtration Solutions for Commercial Aquaculture

Pursun supports commercial fish farms, hatcheries, shrimp projects, and research facilities with project-based RAS filtration equipment configuration, filtration process planning, manufacturing, and implementation support.

Each recirculating aquaculture system is reviewed against species, biomass, feed load, water volume, treatment flow, site conditions, and operating requirements.

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Commercial RAS facility with multiple circular production tanks and centralized pipework

RAS OVERVIEW

What Is a RAS Filtration System?

A RAS filtration system treats and recirculates culture water through controlled stages before returning it to the fish tanks. Modern farms use RAS to improve water-use control, manage culture conditions, and support indoor or high-density aquaculture applications.

Reference recirculating aquaculture system layout showing fish tanks and centralized water treatment equipment

Water Recycling

Treat and reuse system water through controlled process stages while managing project-specific water exchange and discharge.

Stable Water Quality

Coordinate solids removal, biological treatment, oxygen management, disinfection, monitoring, and operations around the culture requirement.

Production Efficiency

Support indoor, intensive, or staged production through planned tank layouts, circulation, treatment capacity, and operating access.

COMPLETE TREATMENT PROCESS

RAS Filtration System Components

A complete RAS combines culture infrastructure, water circulation, mechanical filtration, biological treatment, gas management, disinfection, oxygenation, pumping, monitoring, waste handling, controls, and backup systems. Pursun focuses on filtration equipment and project-based engineering support within this process.

Mechanical Filtration Stage and Drum Filter Integration

Aquaculture rotary drum filter open chamber showing drum screen and spray pipe

MECHANICAL FILTRATION

Aquaculture Drum Filter

First-stage solids removal for suspended waste and uneaten feed before downstream treatment.

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Large cylindrical Protein Skimmer for aquaculture and RAS organic waste removal

PROTEIN REMOVAL

Protein Skimmer

Foam-fractionation equipment for dissolved and fine organic removal where water chemistry and process conditions are suitable.

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Round custom PP aquaculture tank for a commercial RAS project

CULTURE INFRASTRUCTURE

Custom Aquaculture Tank

Project-specific PP culture tanks planned around farm layout, species, circulation, drainage, and treatment interfaces.

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Biological Filtration and Water Treatment Modules

Biological Treatment

Converts dissolved nitrogen waste through microbial processes. Capacity must be determined from biomass, feed load, and project conditions.

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Water Disinfection

UV, ozone, or another strategy may be selected according to species, water quality, biosecurity, and process design.

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Oxygen Management

Aeration, oxygenation, degassing, monitoring, emergency oxygen, and backup requirements are reviewed as part of the system design.

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Fine Filtration and Integrated RAS Equipment Options

Industrial recirculating aquaculture system installation layout

INTEGRATED EQUIPMENT

RAS Integrated Filtration Unit

An independently sellable integrated filtration unit that may be configured within suitable RAS projects; it is not a complete RAS by itself.

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Pursun Tech high-capacity submerged mechanical filter for commercial aquaculture

FINE MECHANICAL FILTRATION

Submerged Mechanical Filter

Mechanical solids-removal equipment for suitable high-flow and commercial aquaculture layouts.

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DELIVERED PROJECT EXPERIENCE

10+ Commercial RAS Projects Delivered

Pursun’s confirmed role in these projects was equipment supplier and contractor. The portfolio covers commercial fish farming, hatchery, research, pilot, high-altitude, international tilapia, and enclosed shrimp applications.

Delivered largemouth bass RAS facility with multiple commercial culture tanks in Xinjiang

Xinjiang Largemouth Bass RAS Project

Xinjiang, China · Largemouth bass · Commercial RAS

Delivered for combined seedling and adult-fish cultivation under challenging climate and site conditions.

Delivered mandarin fish hatchery RAS facility with rows of blue rearing tanks in Changzhou

Changzhou Mandarin Fish Hatchery RAS Project

Jiangsu, China · Mandarin fish · Hatchery RAS

Delivered as a phased fingerling-rearing and acclimation system with separate production zones.

Delivered tilapia RAS farm facility in Cote d'Ivoire with circular culture tanks

Côte d’Ivoire Tilapia RAS Project

Côte d’Ivoire · Tilapia · Commercial RAS renovation

Delivered for hatching, fingerling rearing, and grow-out with a phased expansion approach.

Delivered enclosed whiteleg shrimp RAS farming facility in Chongqing

Chongqing Whiteleg Shrimp RAS Project

Chongqing, China · Whiteleg shrimp · Enclosed industrial RAS

Delivered as a fully enclosed cultivation project with water recirculation, UV, ozone, and temperature-management functions.

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RAS Project Portfolio

CASE 001

Xinjiang Urumqi Largemouth Bass

Commercial seedling and adult-fish RAS · Delivered

CASE 002

Changzhou Mandarin Fish Fingerling

Hatchery and fingerling RAS · Delivered

CASE 003

Xinhui Da'ao Experimental Workshop

Research and experimental RAS · Delivered

CASE 004

Yumeng Mandarin Fish Domestication

Hatchery and fry-domestication RAS · Delivered

CASE 005

Nansha Mandarin Fish

Phased commercial RAS · Delivered

CASE 006

Tibetan Cuona Perch

High-altitude commercial RAS · Delivered

CASE 007

Côte d’Ivoire Tilapia

International phased commercial RAS · Delivered

CASE 008

Xinhui Flagship Mandarin Fish

Large-scale commercial RAS · Delivered

CASE 009

Jiangmen Mandarin Fish Test Line

Pilot and validation RAS · Delivered

CASE 010

Chongqing Whiteleg Shrimp

Fully enclosed industrial RAS · Delivered

ENGINEERING CAPABILITY

Custom RAS Solutions and Engineering Support

Project Consultation

Clarify species, production target, site conditions, project stage, budget boundaries, and required support.

System Design

Develop the treatment-process concept, layout, hydraulic inputs, interfaces, access, waste discharge, and backup requirements.

Equipment Selection

Match verified equipment models and supporting modules to confirmed flow, solids load, biomass, and operating conditions.

Manufacturing

Coordinate project-specific PP equipment, tanks, pipe interfaces, and approved production drawings within the confirmed scope.

Installation Support

Provide installation guidance, interface review, commissioning coordination, and operating-document support according to the project scope.

After-sales Support

Support technical communication, operating questions, spare-parts planning, and troubleshooting after delivery.

APPLICATION AREAS

Commercial Aquaculture Applications for RAS

Fish Hatchery

Stage-based systems for fry, nursery, acclimation, and sensitive-stock water management.

Commercial Fish Farming

Grow-out and production systems planned around biomass, feed load, treatment capacity, and expansion requirements.

Shrimp Farming

Enclosed or recirculating shrimp applications with project-specific solids removal, disinfection, oxygen, and temperature requirements.

Research Aquaculture

Independent or modular test units for comparative trials, parameter validation, and scale-up decisions.

BUYER QUESTIONS

RAS Filtration System FAQ

A RAS filtration system treats and recirculates aquaculture water through coordinated stages such as mechanical filtration, biological treatment, gas management, disinfection, oxygenation, pumping, monitoring, and return-water control.
Provide the species, production stage, target biomass or production, tank number and volume, feed load, required flow, water source, site layout, country, power conditions, existing equipment, and project drawings if available.
The required equipment depends on the project. Typical modules may include culture tanks, pumps, drum filters, biological filters, oxygenation, degassing, disinfection, monitoring, waste handling, controls, and backup systems. Protein skimming is application-dependent.
Selection requires confirmed treatment flow, solids load, installation water level, pipe connections, available space, and redundancy requirements. Do not select only from a model suffix or an unverified flow assumption.
Pursun can review the existing process, available space, current treatment equipment, target capacity, and connection conditions to determine whether individual equipment or a broader filtration upgrade is appropriate.
No. RAS treats and reuses water, but actual makeup water, discharge, cleaning, and water-exchange requirements depend on species, process design, operating conditions, and management.
Yes, project references cover hatchery, commercial fish farming, enclosed whiteleg shrimp, and experimental or pilot RAS applications. The treatment process must be configured for the specific species and production stage.
Support may include interface review, installation guidance, commissioning coordination, operating-document support, technical communication, troubleshooting, and spare-parts planning according to the confirmed project scope.

Request Engineering Consultation for Your RAS Project

Send your fish species, production target, tank volume, required flow, site conditions, and current project stage for an initial engineering review.

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