The object of the research were VFCWs which are a component of biological treatment of two hybrid hydrophyte systems located in Wieszyno and Wiklino, close to Słupsk, Poland. The facilities that are subject to analyses are unified in terms of structure (filtration material, depth of the bed and time of operation), but they differ in organic matter load, amounting respectively to: 8.0 gCOD/m2day and 31.0 gCOD/m2day.The intensity of oxygenation of the facilities resulting from diffusive flow of oxygen to the soil was determined basing on the measurements of oxygen diffusion coefficient in the soil (Dg). The analysis of the quality of organic matter in wastewater was concentrated on determining concentrations of the following four fractions: in suspended solids and in dissolved phase both decomposable and non-decomposable ones. The investigation proved that increase in load of organic matter resulted in deterioration of oxygen conditions in the bed, which in turn led to decrease in efficiency of pollutants removal. Higher load of organic matter in the facility of Wieszyno as compared with Wiklino was the direct cause of clogging of VFCW.
Authors
Additional information
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2009
