TY - JOUR T1 - Analysis of the removal of BOD5, COD and suspended solids in subsurface flow constructed wetland in Latvia A1 - Linda Grinberga A1 - Dagnija Grabuža A1 - Inga Grīnfelde A1 - Didzis Lauva A1 - A1 - Armands Celms A1 - Wojciech Sas A1 - Andrzej Głuchowski A1 - Justyna Dzięcioł JO - Acta Sci. Pol. Architectura} VL - 20 IS - 4 SP - 20 Y1 - 2021 UR - https://www.architectura.actapol.net/volume20/issue4/_4_.pdf SN - 1644-0730 KW - constructed wetlands, subsurface flow, BOD, COD, suspended solids AB - This study aims to evaluate the performance of subsurface flow constructed wetland in Latvia which was established to receive storm water from surface runoff from a farmjard in agricultural area. As a part of this study, subsurface horizontal flow wetlands was monitored, in order to evaluate the changes in the efficiency of treatment depending on biological factors. The efficiency of horizontal subsurface flow constructed wetland was evaluated by comparing the concentration of total suspended solids (TSS), biochemical oxygen demand (BOD5) and chemical oxygen (COD) at inlet and outlet of the wetland depending on temperature and pH. Since June 2014, water quality monitoring in a research site in the farm “Mezaciruli”, Zaļenieku parish, Jelgava region has been carried out to treat the point source agricultural runoff from the impermeable pavements. The analysis of the data obtained in the monitoring allows to draw conclusions about the influence of certain factors in the subsurface flow constructed wetlands under the climate and environmental conditions in Latvia. ER -