EN
EN
AR
BG
HR
CS
DA
NL
FI
FR
DE
IT
NO
PL
PT
RO
RU
ES
SV
IW
SR
SK
SL
TR
FA
DC HDPE 75 para sistemas de aquicultura de recirculação
Add the media in 2–3 batches to avoid accumulation caused by adding too much at once. Carry out ‘sealed aeration’: stop water inflow and outflow during the addition process and carry out continuous aeration (for approximately 5–8 days). At the start of the sealed aeration period, crushed powdered feed may be added in proportion to the media as a nutrient source. Specialised aerobic denitrifying bacterial inoculants may be added to help these bacteria colonise the media preferentially.
Descrição
How can biofilm be established more quickly on MBBR media in recirculating aquaculture systems?
Add the media in 2–3 batches to avoid accumulation caused by adding too much at once. Carry out ‘sealed aeration’: stop water inflow and outflow during the addition process and carry out continuous aeration (for approximately 5–8 days). At the start of the sealed aeration period, crushed powdered feed may be added in proportion to the media as a nutrient source. Specialised aerobic denitrifying bacterial inoculants may be added to help these bacteria colonise the media preferentially.
DC HDPE 75 para sistemas de aquicultura de recirculação
O Meio MBBR com Protrusão de Faixa Vertical de 75 Furos representa um suporte de biofilme de ultra-alta densidade projetado para máxima intensificação de processos em tratamentos avançados de águas residuais. Sua geometria patenteada integra 75 furos passantes dispostos com precisão com faixas verticais elevadas alinhadas axialmente, criando uma estrutura de treliça tridimensional que maximiza a área de superfície protegida (>1.600 m²/m³), mantendo >94% de espaço vazio. Fabricado em compósito HDPE/PP nano-reforçado, o meio proporciona excepcional resistência mecânica e retenção de biofilme sob cargas hidráulicas extremas (até 8 m³/m²·h). As saliências escalonadas das faixas geram microturbulência controlada, aumentando a dissolução do oxigênio e protegendo a biomassa do cisalhamento em reatores de alta velocidade.
What should be done about MBBR media accumulation and poor fluidisation in recirculating aquaculture systems?
Ensure uniform aeration, as this provides the driving force for media fluidisation. Check whether the aeration discs or pipes are blocked or unevenly distributed. An excessively high packing density (e.g. exceeding 40 per cent) is a common cause of agglomeration. This should be dynamically adjusted according to the water quality load; a packing density of around 30–35 per cent is generally recommended. Check whether the media retention screens are blocked by biofilm or debris.
Solicitar OrçamentoWhy is the DC 75 HDPE MBBR MEIDA suitable for use in high-density recirculating aquaculture systems?
1. Alta área de superfície específica
DC 75 has a specific surface area of >1,600 m²/m³, providing ample attachment space for nitrifying bacteria, which helps improve ammonia-nitrogen removal efficiency in recirculating aquaculture systems and maintain a more stable water quality environment.
2. Estrutura de 75 orifícios para crescimento estável de biofilme
The DC 75 features a 75-hole structure that provides microorganisms with abundant internal channels and external attachment surfaces, promoting more uniform and stable biofilm growth while reducing biofilm loss caused by water flow or aeration.
3. Suitable for Nitrification in RAS Biofilters
In recirculating aquaculture systems, fish waste and uneaten feed continuously produce ammonia nitrogen, which must be continuously removed through biological filtration. The DC 75 provides a favorable environment for nitrifying bacteria to attach and grow, helping to convert harmful ammonia nitrogen into less toxic substances and thereby maintaining stable water quality in the aquaculture system.
4. Excelente desempenho de fluidificação
DC 75 has a density of 0.94–0.97 g/cm³, which is close to that of water. When driven by aeration or water circulation, the media can maintain a good state of suspension and fluidization within the biological filter, enabling sufficient contact between the aquaculture water, dissolved oxygen, and the biofilm, thereby improving the efficiency of biological filtration.
5. Commonly Used in RAS Systems
Due to its high specific surface area, stable structural design, and excellent biofilm formation properties, DC 75 is a commonly used biological filter media in recirculating aquaculture systems and is particularly suitable for projects with high requirements for nitrification efficiency and ammonia-nitrogen control.
6. Fabricado com 100% de HDPE virgem branco.
The DC 75 is made from 100% virgin white HDPE material and offers excellent chemical stability, corrosion resistance, and weather resistance, making it suitable for long-term use in recirculating aquaculture systems and biological filters at fish farms.
7. Longa vida útil
The DC 75 has a service life of up to 15 years, which reduces the frequency of media replacement and lowers the long-term operating and maintenance costs of recirculating aquaculture systems.
8. Proporção de Enchimento Flexível
The fill rate of the DC 75 ranges from 15% to 65% and can be flexibly adjusted based on the species being farmed, stocking density, feed intake, ammonia-nitrogen load, and biological filter design requirements, making it suitable for recirculating aquaculture systems of various scales.
9. Suitable for Medium and Large Biofilters
The DC 75 has dimensions of Φ25×4 mm. Combined with its high specific surface area, this makes it suitable for use in medium- to large-scale RAS biofilters, and it is particularly well-suited for projects with high requirements for biological filtration capacity and long-term operational stability.
Especificações técnicas
| Parâmetro | Especificação | Unidade | Observações |
| Modelo | Portador MBBR de 75 furos | - | Geometria padrão da indústria |
| Material | Polietileno de alta densidade (HDPE) | - | Estabilizado por UV, de qualidade alimentar |
| Cor | branco | - | Padrão |
| Shape | Cilíndrico com 75 canais transversais internos | - | Fluxo otimizado e proteção de biofilme |
| Diâmetro (Ø) | 25 | mm | Tamanho nominal |
| Altura (H) | 4 | mm | - |
| Área específica da superfície | >1600m2/m3 | ||
| Densidade de mídia individual | 0.94-0.97 | g / cm³ | |
| vida de serviço | > 15 | anos |
Typical Applications of DC 75 in Aquaculture
DC 75 is suitable for biological filtration in recirculating aquaculture systems, especially for projects requiring stable nitrification and ammonia-nitrogen control.
Aplicações típicas incluem:
● Sistemas de recirculação em aquicultura
● Biofiltros RAS
● Medium and large fish farm biofiltration systems
● Remoção de nitrogênio amoniacal em água de aquicultura
● High-density indoor aquaculture systems
● Sistemas de cultivo de tilápia
● Sistemas de criação de trutas
● Sistemas de cultivo de camarão
● Salmon hatchery and grow-out systems
● Fish fry and juvenile fish culture systems
● Sistemas de biofiltração para aquaponia
● Land-based aquaculture water treatment systems
How can you tell if biofilm formation has been successful?
Do not rely solely on visual inspection. Biofilm formed within the last 30 days is virtually invisible to the naked eye; only a slight change in the colour of the media may be noticeable. The correct way to assess this is by testing the water quality: when the concentrations of ammonia-nitrogen and nitrite at the outlet of the biological reactor are significantly lower than those at the inlet, this confirms that biofilm formation has been successful and that the biofilm has begun to function.
Solicitar OrçamentoPerguntas frequentes
Q: você é uma empresa comercial ou fabricante?
A: Nós somos fábrica.
Q: Quanto tempo é o seu tempo de entrega?
R: Geralmente, leva de 10 a 20 dias se as mercadorias estiverem em estoque. ou são 30-45 dias se a mercadoria não estiver em estoque, é de acordo com a quantidade.
Q: vocês fornecem amostras? é grátis ou extra?
R: Sim, podemos oferecer a amostra gratuitamente, mas o custo de entrega será pago pelo comprador.
Q: Qual é a sua condições de pagamento?
R: T/TL/C.
Why is the MBBR media floating on the water’s surface in large quantities rather than sinking?
During the initial period after new MBBR media is introduced, it is normal for it to float due to its hydrophobic surface. The wetting and fluidisation process can be accelerated as follows:
Solution: Sprinkle water onto the surface of the MBBR media. Increase the aeration intensity appropriately to help the media tumble and become wetted.
