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DC HDPE 04-2 For Recirculating Aquaculture Systems
Decycle’s HDPE K1 MBBR media are the core microbial carriers used in Moving Bed Biofilm Reactor (MBBR) recirculating aquaculture systems. Manufactured from 100% virgin high-density polyethylene (HDPE), our K1 media are specifically designed for a wide range of biological filters and aquaculture systems, serving aquaculture farms, aquarium enthusiasts and water treatment contractors.
Description
DC 04-2 K1 MBBR Carrier for RAS
Decycle’s HDPE K1 MBBR media are the core microbial carriers used in Moving Bed Biofilm Reactor (MBBR) recirculating aquaculture systems. Manufactured from 100% virgin high-density polyethylene (HDPE), our K1 media are specifically designed for a wide range of biological filters and aquaculture systems, serving aquaculture farms, aquarium enthusiasts and water treatment contractors.
DC 04-2 K1 MBBR Media for Recirculating Aquaculture Systems
This High-Density Polyethylene (HDPE) MBBR (Moving Bed Biofilm Reactor) media features a 4-hole cylindrical design with vertical surface striations. Engineered to optimize biofilm attachment and nutrient diffusion in aquaculture recirculating systems, the vertical striations significantly increase effective surface area while enhancing hydrodynamic mixing and reducing energy consumption. Its robust structure ensures long-term durability under continuous motion, supporting efficient ammonia and nitrite removal essential for high-density fish farming.
How do you calculate how many cubic metres of K1 MBBR MEDIA your recirculating aquaculture system requires?
Simply provide your stocking density, the volume of the aquaculture water, the feeding rate, the daily feed intake and the protein content of the feed, and our engineers will be able to calculate this accurately for you.
Request A QuoteWhy is the K1 MBBR MEIDA the ideal media for recirculating aquaculture systems?
1. High Specific Surface Area
DC 04-2 (K1) has a specific surface area of >900 m²/m³, providing ample attachment space for nitrifying bacteria and helping to improve ammonia-nitrogen removal efficiency in recirculating aquaculture systems.
2. Suitable for Nitrifying Bacteria Growth
The DC 04-2 (K1)’s 4-hole cylindrical structure provides both internal and external attachment surfaces for nitrifying bacteria, enabling more stable biofilm growth. Nitrifying bacteria gradually convert harmful ammonia nitrogen in aquaculture water, helping to maintain a suitable growth environment for fish and shrimp.
3. Stable Biofilm Formation
In RAS systems, stable biofilm is essential for continuous ammonia removal. DC 04-2 (K1) provides protected surfaces for microorganisms, reducing the risk of biomass loss caused by water flow or aeration.
4. Excellent Fluidization Performance
With a density of 0.94–0.97 g/cm³, DC 04-2 (K1) is close to the density of water. Under aeration or water circulation, the media can remain suspended and fluidized in the biofilter, allowing full contact with aquaculture water and dissolved oxygen.
5. Compact Size and High Carrier Quantity
DC 04-2 (K1) is small in size, measuring Φ11×7 mm, with a density exceeding 930,000 pcs/m³. Its high density and uniform distribution help improve the contact efficiency between the media and the aquaculture water in biofilters, making it suitable for small- to medium-sized and high-density recirculating aquaculture systems.
6. Made from 100% White Virgin HDPE
DC 04-2 (K1) is made from 100% virgin white HDPE material. It has stable chemical properties and is resistant to corrosion and aging, making it suitable for long-term use in recirculating aquaculture systems and biological filters at fish farms.
7. Long Service Life
With a service life of more than 15 years, DC 04-2 (K1) helps reduce media replacement frequency and long-term operating costs in aquaculture projects.
8. Flexible Filling Ratio
The filling ratio of DC 04-2 (K1) ranges from 15% to 68%, which can be adjusted according to fish species, stocking density, feeding amount, ammonia load and biofilter design.
9. Helps Maintain Stable Water Quality
In RAS, fish waste and feed residues continuously produce ammonia nitrogen. DC 04-2 (K1) supports the growth of nitrifying bacteria, helping reduce ammonia accumulation and maintain stable water quality for fish and shrimp growth.
Technical Specifications
| Parameter | Specification | Unit | Remarks |
| Model | 4-Hole MBBR Carrier | – | Industry-standard geometry |
| Material | High-Density Polyethylene (HDPE) | – | UV-stabilized, food-grade |
| Color | white | – | Standard |
| Shape | Cylindrical with 4 internal cross-channels | – | Optimized flow & biofilm protection |
| Diameter (Ø) | 11 | mm | Nominal size |
| Height (H) | 7 | mm | – |
| Specific Surface Area | >900m2/m3 | ||
| Individual Media Density | 0.94-0.97 | g/cm³ | |
| Operating Temperature | 5 - 60 | °C | Suitable for RAS conditions |
| Service Life | > 15 | years |
Typical Applications of DC 04-2 (K1) in Aquaculture
DC 04-2 (K1) is specially suitable for biological filtration in recirculating aquaculture systems.
Typical applications include:
● Recirculating aquaculture systems
● RAS biofilters
● Fish farm biological filtration
● Ammonia-nitrogen removal in aquaculture water
● Tilapia farming systems
● Trout farming systems
● Shrimp farming systems
● Salmon hatchery systems
● Fish fry and juvenile fish culture
● Indoor high-density aquaculture systems
● Aquaponics biofiltration systems
● Small and medium-sized fish farm water treatment systems
Why choose Decycle as your supplier of K1 MBBR MEDIA?
We insist on using brand-new high-density polyethylene as our raw material, and our products are manufactured from 100% high-density polyethylene.
With over 40 high-speed extrusion production lines, our annual production capacity for MBBR media exceeds 100,000 cubic metres.
We maintain a stock of 10,000 cubic metres of media across various models, enabling us to respond swiftly to and fulfil large-volume orders.
We utilise brand-new HDPE raw materials certified to US FDA food-grade standards. The company fully implements international management systems including ISO 9001, ISO 14001 and ISO 45001.
Frequently Asked Questions
Q: Are you a trading company or manufacturer?
A: We are factory.
Q: How long is your delivery time?
A: Generally, it is 10-20 days if the goods are in stock. or it is 30-45 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra?
A: Yes, we could offer the sample for free charge, there are delivery cost to be paid by buyer.
Q: What is your terms of payment?
A: T/T L/C.
