Trickling filter biological filter

Biofiltration is a core part of circulating water aquaculture. Is also important and difficult. Because it is in the growth of whole sealing environment, and is a high density cultivation, such as people of South America white shrimp breeding density reached a staggering 100 kilograms per cubic metre), ammonia nitrogen and nitrite levels will be increased in a short period of time, if not controlled, the toxicity of the two substances will cause deadly threat to the aquatic organisms. So biological filter is indispensable equipment in the circulating water aquaculture. And among them, the trickle of biological filter because of its reasonable structure, high efficiency, small space and is favored by most experts. Lanling company on the basis of the research and development out of the spray type biological filter is to increase the working efficiency of the device to a new height.

Backwash spray type biological filter specially designed for circulating water aquaculture. , of course, also suitable for freshwater aquaculture and wastewater treatment. The basic principle of it is from the upper spray spray to the biological filter material, oxygen with pressurized air from below. Layered drip, aeration. Nitrifying bacteria in a best breeding environment. Bottom of anaerobic chamber, submerged in water, appropriate denitrifying bacteria reproduction hanging film. When the mature biofilm was upset or biological filter material surface contamination is overmuch, can shut out of the water valve, open the back flush valve reverse flushing. The operation is very convenient.

Backwash spray type biological filter is the current domestic biological filtration effect is one of the best design. It artificially created a damp, dark, more oxygen environment nitrifying bacteria can be infested. Frame design and can easily view and change the cleaning filter material. Blue spirit aquatic animals unique to the flushing and can easily in the process of running to the inside of the filter backwash suspended solids, prevent other fungi spawns and competitive impact of nitrifying bacteria. Lower part of the denitrifying bacteria were can make upper bacteria produce nitrate nitrogen discharge water, finally make the total nitrogen content in the water is reduced greatly.

Large circulating water, the fish fry breeding field farms, seafood temporarily raise, sewage treatment plant, etc.

Specifications