A biological reactor is essential in an intensive fish farming system to convert ammonia into relatively harmless nitrate (NO3)
1. Product description:
Aquaculture biofilter equipment
A biofilter is a bed of media on which microorganisms attach and grow to form a biological layer called biofilm. Biofiltration is thus usually referred to as a fixed–film process. Generally, the biofilm is formed by a community of different microorganisms (bacteria, fungi, yeast, etc.), macro-organisms (protozoa, worms, insect's larvae, etc.) and extracellular polymeric substances (EPS). The aspect of the biofilm is usually slimy and muddy.
A biological reactor is essential in an intensive fish farming system. The fish excrete ammonia (NH3) through the gills and urea via the urine, both of which dissolve in the water. Urea also forms ammonia, which can be harmful to fish at low concentrations. In RAS, biological filters are used to convert ammonia in a two-step process into relatively harmless nitrate (NO3). In the first step of nitrification, ammonia-oxidizing bacteria convert the ammonia into nitrite (NO2-). In the second step, this NO2- is converted by nitrite oxidizing bacteria into nitrate the end product of nitrification reaction. The nitrifying bacteria in the biofilter only perform well when the circumstances are right for them. When the organic load, in the water is too high, the nitrifying bacteria in the biofilter will be dominated by the faster growing heterotrophic bacteria. This is one of the main reasons that the biological filter is installed after the mechanical filtration steps.
Ewater utilizes several biofilter types, depending on the type of fish produced, the climatic conditions and the dimensions of the farm building. In most cases, moving bed biofilters (MBBR’s) may be the biofilter of choice.
1. Compact units with suitable size.
2. Durable material，easily maintained，and no need of periodic backwashing.
3. High specific surface area，suitable for animalcule growth.
4. High performance，Enhanced process stability.
5. Can be customized upon customers’situation.
3. Product gallery :
mple hero unit, a simple jumbotron-style component
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