Biological Filters
Biological filters by SDK are filtration units designed for fish farming systems with recirculating water circuits. Their purpose is to support repeated biological water treatment and allow the water to be reused in the breeding process.
In modern aquaculture, stable water quality directly affects fish condition, production safety and the everyday operation of the facility. That is why biological filters should be selected according to system volume, fish stocking density, water flow and the technological layout of the installation.
SDK biological filters are made of GRP laminate, stainless steel and aluminium. The construction is prepared for continuous contact with water and for cooperation with installations used in fish farms, hatcheries and aquaculture facilities.
Biological Filters for Recirculating Water Systems
Biological filters are used where water needs to be treated and reused in fish farming. In such systems, proper water flow, filter aeration and working surface for biological processes are extremely important.
SDK biological filters can be part of a larger technological installation, working with fish breeding basins, technological tanks, water supply systems and aeration equipment. This makes it possible to create solutions adapted to a specific fish farm and production method.
When building complete facilities, biological filters can work with basins for initial and main breeding, technological tanks and aeration equipment that support stable operation of the recirculating water circuit.
SDK Biological Filter Range
SDK manufactures biological filters, air systems and biofilter media. The selection of a specific solution depends on the required efficiency, system volume and operating conditions of the facility.
| Cat. no. | Symbol | Description |
|---|---|---|
| 10.1.1 | SDK CN1,7 | Biological filter 1.7 m³ |
| 10.1.2 | SDK CN2,6 | Biological filter 2.6 m³ |
| 10.1.3 | SDK CN6 | Biological filter 6 m³ |
| 10.1.4 | SDK CNAir | Air system for biological filters |
| 10.1.5 | SDK CNBio1,7 | Biofilter media for biological filter 1.7 m³ |
| 10.1.6 | SDK CNBio2,6 | Biofilter media for biological filter 2.6 m³ |
| 10.1.7 | SDK CNBio6 | Biofilter media for biological filter 6 m³ |
| 10.1.8 | SDK BioEl | Bioelements 1 m³ |
| *For more information please submit a request. | ||
Filter Aeration and Equipment Selection
Correct aeration and even water movement are very important for the operation of a biological filter. That is why the SDK range includes the SDK CNAir air system and filter media matched to specific biological filter volumes.
Depending on the project, a biological filter can work with aeration devices, compressors and diffusers. For such applications, properly selected air compressors for water aeration and diffusers for distributing air or oxygen can be used.
Main Advantages
- operation in recirculating water systems,
- support for repeated biological water treatment,
- construction made of GRP laminate, stainless steel and aluminium,
- available biological filters: 1.7 m³, 2.6 m³ and 6 m³,
- possibility to use an air system for biological filters,
- available biofilter media and bioelements,
- solution adapted to the fish farming installation.
Selecting a Biological Filter for a Fish Farm
Every recirculating water system has different requirements. The number and size of basins, fish species, planned stocking density, amount of feed, water flow and aeration method all matter. That is why the biological filter should be selected on the basis of information about the complete technological system.
SDK can prepare a biological filter as part of a larger fish farming system. Based on information about the facility, we help select the filter volume, biofilter media, aeration method and equipment required for proper operation of the installation.
Do You Need a Biological Filter for Fish Farming?
Send us information about your facility, water circuit, number of basins, fish species and planned stocking density. We will help select the biological filter, media and equipment for your installation.