The new concept of bioremediation of anthropogenic water bodies and quarry wastewaters treatment by phytoextraction
and phytotransformation in the Arctic conditions is presented. This technology is based on transformating
the man-caused water reservoirs into nature-like marsh ecosystems. At the first stage, a new patented method for
advanced waste treatment using floating bioplato was developed and implemented. After implementing the bioplato,
the concentration of ammonium ions in water decreased by 53–90%, nitrate nitrogen reduced by 15–20%. At the
second stage, the floating bioplato technology was modified into the highly efficient purificating marsh ecosystem,
which allowed to cover the waterbody territory to the greatest possible extent. The technology is based on the creation
of phytomats enabling in the accelerated mode to form plant blocks of three different types. They are aimed
both at local grassing down, and at swamping deep and shallow areas of sediment ponds. In forming phytomats,
two soil substitutional substrates (thermovermiculite, wood sawdust) and regionally-optimized assortment of 24
plant species are used. The proposed technology does not require energy, chemicals and soil components which
are scarce in the region. The predominance of natural ecosystem processes in the formed phytocenoses allows to
achieve maximum efficiency, and the use of available materials contributes to minimizing the costs of creating and
maintaining the system. The introduction of this technology and formation of the artificial phytocenosis with the
area of about 30% of the man-caused reservoirs territory made it possible to increase the efficiency of wastewater
treating from mineral nitrogen compounds by 22%.