摘要：The paper presents the impact assessment of the plant-soil
treatment plant on the groundwater quality. The physicochemical
composition of groundwater was analysed. The samples were collected
form the piezometer network located in the irrigated area and around it.
Water quality tests were carried out in 2014 with the frequency of the
month. Changes in the physicochemical composition of groundwater were
determined with reference to quality of domestic wastewater used for
irrigation. The obtained results were also referred to groundwater
parameters limits before the facility’s operation started. As a result of
many years of exploitation the groundwater quality under the irrigated area
has changed. The boundary of individual segments of wastewater treatment
plant is clearly marked by the change in concentrations of the observed
pollution indicators. The highest values of organic matter expressed by
BOD and COD were observed in the groundwater the I segment
(respectively 6.9 gO2·m-3 and 66.2 gO2·m-3). This was the results of
a change in the irrigation regime. As the result of irrigation, an increase of
nitrate (V) and nitrate (III) was also observed in comparison to their preoperational
values. Plant-soil treatment plant prove high effectiveness of
work. However, due to their significant impact on the groundwater quality
their operating should be gradually reduced.
其他摘要：The paper presents the impact assessment of the plant-soil treatment plant on the groundwater quality. The physicochemical composition of groundwater was analysed. The samples were collected form the piezometer network located in the irrigated area and around it. Water quality tests were carried out in 2014 with the frequency of the month. Changes in the physicochemical composition of groundwater were determined with reference to quality of domestic wastewater used for irrigation. The obtained results were also referred to groundwater parameters limits before the facility’s operation started. As a result of many years of exploitation the groundwater quality under the irrigated area has changed. The boundary of individual segments of wastewater treatment plant is clearly marked by the change in concentrations of the observed pollution indicators. The highest values of organic matter expressed by BOD and COD were observed in the groundwater the I segment (respectively 6.9 gO2·m-3 and 66.2 gO2·m-3). This was the results of a change in the irrigation regime. As the result of irrigation, an increase of nitrate (V) and nitrate (III) was also observed in comparison to their pre-operational values. Plant-soil treatment plant prove high effectiveness of work. However, due to their significant impact on the groundwater quality their operating should be gradually reduced.
