The content of nitrifying microorganisms in the water of the biofilter reactor for closed water supply system during for the use of different types of filler
The monitoring of the content of nitrifying microorganisms in the water of the reactor of the biofilter of the closed water supply system during use of various fillers has been carried out (RAS). During the analysis quantitative changes of nitrifying microorganisms in the water of a biofilter reactor with keramzite filler, with filler RK PLAST, with filler KALDNER K1P, with filler AQ-25 for their putting into operation were determined. The average number of nitrifying microorganisms in the water of a biofilter reactor with different types of filler was analyzed for the duration of the experiment for 30 days. The result of monitoring the quantitative changes of nitrifying microorganisms is important to consider when designing an industrial trout farm. The type of biofilter reactor filler plays a key role in the purification of water in the closed water supply system, which has become the standard method of biofiltration in aquaculture in recent years. Compared to other methods, bio-purification offers crucial benefits such as high efficiency, compact placement and easy maintenance. Microorganisms-nicifiers quickly colonize the biofilter with RK PLAST filler, somewhat slower with the fillers AQ-25 and KALDNER K1P and the slowest with the expanded clay filler. At the same time, the amount of nitrifying microorganisms in the water of the biofilter reactor with RK PLAST filler was 8.91% higher, compared to the expanded clay expanded 6.88% and 4.45% higher than in water filled with AQ-25 and KALDNER K1P.