Possibilities Of Using Eichhornia Crassipes Solms And Lemna Minor L. In Wastewater Phytoremediation

Abstract

Object: To investigate the efficiency of an urban sewage treatment plant, to study the peculiarities of changes in the concentration of heavy metal ions in wastewater and to assess the biological treatment of wastewater from livestock complexes when Eichhornia crassipes Solms. and Lemna minor L. are present.

Methods: Physical properties, chemical composition of wastewater and concentration of heavy metal ions in water were analyzed using the standard methodology by Lurye.

Findings: The possibility of using E. crassipes Solms. and L. minor L. at a treatment plant in Osh was confirmed, and experiments showed a positive dynamic of absorption of all forms of nitrogen, phosphorus and heavy metals.

Conclusions: E. crassipes Solms. and L. minor L. significantly improve the physicochemical indicators of water; oxidizability decreases, all forms of nitrogen, phosphates, and heavy metal ions decrease, dissolved oxygen increases, and the possibility of contaminating open water bodies, soil and underground waters by the above pollutants is eliminated. The obtained results can be applied for additional treatment of various polluted waters.