Investigation of Different Microbiological and Chemical Pollution Parameters of Some Aquatic Plants Used in Constructed Wetland
Project no. 1051 · Status: Kapanmış · 2017
Summary
Pistia stratiotes, Eichhornia crassipes and Lemna minor were used as plant material in the study. During the experiment, plants were exposed to waste water under aseptic conditions from test pools on day 0, week 1, week 2, week 4, week 6 and week 8. The study was carried out in two ways: microbiological and histological tests. Aerobic Mesophilic Bacteria, Coliform Bacteria, Fecal Enterococci, Fecal Coliform and Clostridium spp were examined in microbiological experiments. At the end of the study, it was observed that aquatic plants gradually lost their vitality at the end of the first month. When the census results were evaluated, it was found that there was no significant difference between the control wastewater sample and the samples transferred to aquatic plants. Part of the study of the histological analysis, the anatomical features of organs such as root, stem, leaf and petiol belonging to waste water and control plant samples were examined comparatively. The most remarkable issue in root cross-sections treated with waste water is that the air gaps are considerably smaller than the control group. In addition, more rafide crystals were observed in waste water root samples than control group. Although the anatomical structure seen in the wastewater treated samples was the same as the control group, it was observed that there was a decrease in the chloroplasts in the leaf cross sections taken from the wastewater treated samples compared to the control group, and that there was a decrease in the air gaps and xylem especially in the control group. Although the anatomical structure was similar to the control group in petiol cross sections taken from the wastewater treatment group, shrinkage was observed especially in the air gaps. Rafid crystals were also found. Keywords: Constructed wetland, microbiology, pollution, histology.