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DC HDPE 75 recirkulācijas akvakultūras sistēmām
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.
Apraksts
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 recirkulācijas akvakultūras sistēmām
75 caurumu vertikālo svītru izvirzījumu MBBR materiāls ir īpaši augsta blīvuma bioplēves nesējs, kas izstrādāts maksimālai procesa intensifikācijai progresīvā notekūdeņu attīrīšanā. Tā patentētā ģeometrija integrē 75 precīzi izvietotus caurumus ar aksiāli izlīdzinātām vertikālām paceltām svītrām, radot 3D režģa struktūru, kas maksimāli palielina aizsargātās virsmas laukumu (>1600 m²/m³), vienlaikus saglabājot >94% tukšuma. Izgatavots no nanodaļiņām pastiprināta HDPE/PP kompozītmateriāla, materiāls nodrošina izcilu mehānisko izturību un bioplēves noturību ekstremālās hidrauliskās slodzēs (līdz 8 m³/m²·h). Pakāpeniski izvietotie svītru izvirzījumi rada kontrolētu mikroturbulenci, uzlabojot skābekļa izšķīšanu un aizsargājot biomasu no bīdes ātrgaitas reaktoros.
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.
Pieprasīt citātuWhy is the DC 75 HDPE MBBR MEIDA suitable for use in high-density recirculating aquaculture systems?
1. Augsts īpatnējais virsmas laukums
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. Lieliska fluidizācijas veiktspēja
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. Izgatavots no 100% baltas neapstrādātas 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. Ilgs kalpošanas laiks
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. Elastīga pildījuma attiecība
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.
Tehniskās specifikācijas
| Parametrs | specifikācija | Vienība | Piezīmes |
| Modeļi | 75 caurumu MBBR pārvadātājs | - | Nozares standarta ģeometrija |
| materiāls | Augsta blīvuma polietilēns (HDPE) | - | UV stabilizēts, pārtikas kvalitātes |
| Krāsa | balts | - | Standarta |
| Shape | Cilindrisks ar 75 iekšējiem šķērskanāliem | - | Optimizēta plūsma un bioplēves aizsardzība |
| Diametrs (Ø) | 25 | mm | Nominālais izmērs |
| Augstums (H) | 4 | mm | - |
| Specifiskais virsmas laukums | >1600 m²/m³ | ||
| Individuālais multivides blīvums | 0.94-0.97 | g/cm³ | |
| Kalpošanas laiks | > 15 | gadiem |
DC 75 tipiskie pielietojumi akvakultūrā
DC 75 is suitable for biological filtration in recirculating aquaculture systems, especially for projects requiring stable nitrification and ammonia-nitrogen control.
Pie tipiskiem pielietojumiem pieder:
● Recirculating aquaculture systems
● RAS biofiltri
● Medium and large fish farm biofiltration systems
● Ammonia-nitrogen removal in aquaculture water
● High-density indoor aquaculture systems
● Tilapijas audzēšanas sistēmas
● Foreļu audzēšanas sistēmas
● Garneļu audzēšanas sistēmas
● Salmon hatchery and grow-out systems
● Fish fry and juvenile fish culture systems
● Akvaponikas biofiltrācijas sistēmas
● 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.
Pieprasīt citātuBiežāk uzdotie jautājumi
J: Vai jūs esat tirdzniecības uzņēmums vai ražotājs?
A: Mēs esam fabrika.
Q: Cik ilgs laiks ir jūsu piegādes laiks?
A: Parasti tas ir 10-20 dienas, ja preces ir noliktavā. vai tas ir 30-45 dienas, ja preces nav noliktavā, tas ir pēc daudzuma.
J: Vai jūs sniedzat paraugus? tas ir bez maksas vai papildus?
A: Jā, mēs varētu piedāvāt paraugu bez maksas, un pircējam ir jāsedz piegādes izmaksas.
J: Kāds ir Jūsu maksāšanas?
A: Apmaksāts.
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.
