APPLICATION OF Lemna minor FOR POLLUTED WATER TREATMENT FROM BIOGENIC ELEMENTS

The aim of this work was to establish the possibility of Lemna minor usage to improve the efficiency of wastewater treatment from nitrogen and phosphorus compounds. Due to their pollution resistanse, Lemna minor is often used for wastewater remediation. It's capability of absorption and transformation of various compounds, promotes the deposition of suspended matter, saturates water with oxygen, intensifies the purification processes. Due to the rapid growth rate, duckweed absorbs a large amount of pollutants, thereby purifying water from them. However, there is insufficient data and information on the efficiency of nitrogen and phosphorous compounds extraction by Lemna minor wastewater. That is why the research direction was to determine the efficiency of wastewater treatment from biogenic nitrogen and phosphorus compounds by higher aquatic plants of Lemna minor. The necessary conditions for cultivation of higher aquatic plants of Lemna minor in autumn and winter were established. The efficiency of using duckweed of different mass for purification of waste water from biogenic compounds of nitrogen and phosphorus was investigated. The usage of duckweed together with other higher aquatic plants to investigate wastewater from biogenic nitrogen and phosphorus compounds was investigated. It was found that the efficiency of sewage treatment in the autumn-winter period should adjust the mode of illumination and temperature regime.