Evaluation of the long-term performance of constructed wetlands Spálené Poříčí and Velká Jesenice

Michaela Porazíková

Bachelor's thesis

Abstract:

Constructed wetlands for wastewater treatment are extensive treatment systems based on the processes which occur in natural wetlands. Due to high treatment efficiency and low operation and maintenance costs constructed wetlands have become an attractive treatment technology. The aim of the bachelor thesis is to evaluate the long term efficiency of wastewater treatment of constructed wetlands Spálené Poříčí and Velká Jesenice in regard to its expansion through years and intensification. Wastewater samples taken by authorized person during operation were evaluated on the basis of parameters for assessing wastewater quality. The work is focused on the avarege annual inflow and outflow evaluation of biochemical oxygen demand (BOD5), chemical oxygen demand (CODcr), total suspended solids (TSS), phosphorus (P) and ammonia (N-NH4) during the period 1992-2021 for constructed wetland Spálené poříčí and 2000-2021 for constructed wetland Velká Jesenice. The measured data were processed in Microsoft Office Excel 2016. The results were compared with the valid legislation of the Czech Republic and Water Authority limits given for constructed wetlands in Spálené Poříčí and Velká Jesenice. Both constructed wetlands performance met required limits through whole operation. Outflow concentrations showed minimal effectiveness in removing amonia nitrogen until intensification.

Keywords

constructed wetland, treatment efficiency, reconstruction, maintenance, nutrients

Jazyk práce: English

Datum vytvoření / odevzdání či podání práce: 31. 3. 2022

Obhajoba závěrečné práce

• Vedúci: Ing. Tereza Hnátková, Ph.D.
• Oponent: Hannu Poutiainen, externi

Czech University of Life Sciences Prague

Faculty of Environmental Sciences

Bachelor programme:
Environmental Engineering