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DC HDPE 75 cho hệ thống nuôi trồng thủy sản tuần hoàn
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.
Mô tả Chi tiết
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 cho hệ thống nuôi trồng thủy sản tuần hoàn
Vật liệu MBBR dạng lồi sọc dọc 75 lỗ là vật liệu mang màng sinh học mật độ cực cao được thiết kế để tăng cường tối đa quy trình xử lý nước thải tiên tiến. Hình dạng được cấp bằng sáng chế của vật liệu này tích hợp 75 lỗ xuyên qua được sắp xếp chính xác với các sọc nổi thẳng đứng được căn chỉnh theo trục, tạo ra cấu trúc lưới 3D giúp tối đa hóa diện tích bề mặt được bảo vệ (>1.600 m²/m³) đồng thời duy trì >94% không gian rỗng. Được sản xuất từ vật liệu composite HDPE/PP gia cường nano, vật liệu này mang lại độ bền cơ học và khả năng giữ màng sinh học vượt trội dưới tải trọng thủy lực cực lớn (lên đến 8 m³/m²·h). Các sọc lồi so le tạo ra sự nhiễu loạn vi mô được kiểm soát, tăng cường hòa tan oxy và bảo vệ sinh khối khỏi lực cắt trong các lò phản ứng tốc độ cao.
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.
Báo giáWhy is the DC 75 HDPE MBBR MEIDA suitable for use in high-density recirculating aquaculture systems?
1. Diện tích bề mặt riêng cao
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. 75-Hole Structure for Stable Biofilm Growth
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. Excellent Fluidization Performance
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. Made from 100% White Virgin HDPE
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. Tuổi thọ dài
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. Flexible Filling Ratio
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.
Thông sô ky thuật
| Tham số | Đặc điểm kỹ thuật | đơn vị | Chi tiết |
| Mẫu | Giá đỡ MBBR 75 lỗ | – | Hình học tiêu chuẩn công nghiệp |
| Vật liệu | Polyetylen mật độ cao (HDPE) | – | Ổn định tia UV, cấp thực phẩm |
| Màu sắc | trắng | – | Tiêu chuẩn |
| Hình dạng | Hình trụ có 75 kênh chéo bên trong | – | Tối ưu hóa lưu lượng và bảo vệ màng sinh học |
| Đường kính (Ø) | 25 | mm | Kích thước danh nghĩa |
| Chiều cao (H) | 4 | mm | – |
| Diện tích bề mặt cụ thể | >1600m2/m3 | ||
| Mật độ phương tiện cá nhân | 0.94-0.97 | g / cm³ | |
| Tuổi thọ: | > 15 | năm |
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.
Các ứng dụng điển hình bao gồm:
● Recirculating aquaculture systems
● RAS biofilters
● Medium and large fish farm biofiltration systems
● Ammonia-nitrogen removal in aquaculture water
● High-density indoor aquaculture systems
● Tilapia farming systems
● Trout farming systems
● Shrimp farming systems
● Salmon hatchery and grow-out systems
● Fish fry and juvenile fish culture systems
● Aquaponics biofiltration systems
● 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.
Báo giáCâu Hỏi Thường Gặp
Q: Bạn có phải là công ty thương mại hay nhà sản xuất?
A: Chúng tôi là nhà máy.
Hỏi: Thời gian giao hàng của bạn là bao lâu?
A: Thông thường, sẽ là 10-20 ngày nếu hàng hóa còn trong kho. hoặc 30-45 ngày nếu hàng không có trong kho thì tùy theo số lượng.
Hỏi: Bạn có cung cấp mẫu không? nó miễn phí hay bổ sung?
A: Có, chúng tôi có thể cung cấp mẫu miễn phí, chi phí giao hàng do người mua thanh toán.
Hỏi: Các điều khoản thanh toán của bạn là gì?
A: Đúng/Đúng/Đúng.
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.
