FAQ

The guaranteed lifetime is 2 years for the nitrification Lentikats Biocatalyst and 1.5 years for its denitrification counterpart. The actual lifetime, however, is expected to be longer, depending on the conditions the Biocatalyst is operating under (N-NH₄⁺ or N-NO_x^- concentration and temperature). The Biocatalyst's activity is monitored during the course of operation. The Biocatalyst is replaced only when its capacity is depleted (activity drops below the guaranteed limit). The spent Biocatalyst is then disposed of, classified as a non-hazardous municipal waste.

Our long-term experience failed to show any occurrence of this phenomenon.

Unlike activated sludge, which contains a mixture of various bacterial species and other organisms, Lentikats Biocatalysts contain only pure microbial cultures of nitrifying or denitrifying bacteria. Oxygen or organic substrate are therefore supplied to the nitrification and/or denitrification process only for the biochemical conversion of nitrogen, not for the growth of large number of other microorganisms. This reflects in a significantly reduced demand for oxygen and organic carbon source for nitrification and denitrification, respectively and the associated costs. Moreover, limited production of sludge in Lentikats Biotechnology systems leads to a reduction in sludge management and disposal costs.

1. The Lentikats Biocatalyst comes fully active, i.e. the Biocatalysts start working as soon as loaded into the reactor.
2. There are pure cultures of pre-defined nitrifying and denitrifying microorganisms immobilised in the PVA carrier. This allows full control over the process, which can be easily operated and optimised.

Lentikats Biotechnology concept is original in that the nitrifying and denitrifying bacteria enter the system entrapped inside a solid PVA carrier, where they remain throughout the lifetime of the carrier. Moreover, limited space within the carrier suppresses the growth and production of new bacteria.

No, it is not. Lentikats Biocatalyst must be placed into a separate reactor/tank, which may be equipped with a simple mechanical separation at the inlet to remove large particles. Lentikats Biocatalyst is held inside the reactor by means of a simple separator fitted to the reactor's outlet. Consequently, the application of Lentikats Biocatalyst is limited to wastewaters free of large solid particles (> 3 mm) that would deteriorate or hinder the function of these separators.