Wetlands as Nature Based Solutions for In Situ Water Purification: The Case of Urban Wetlands, Jimma, Ethiopia
| dc.contributor.advisor | Agizew, Nigussie (PhD) | |
| dc.contributor.author | Adey, Sileshi | |
| dc.date.accessioned | 2020-03-05T10:02:53Z | |
| dc.date.accessioned | 2023-11-28T14:01:06Z | |
| dc.date.available | 2020-03-05T10:02:53Z | |
| dc.date.available | 2023-11-28T14:01:06Z | |
| dc.date.issued | 2018-07 | |
| dc.description.abstract | Nature provides valuable solution to tackle different socio- environmental challenges. Wetlands have a potential to purify water which is mainly influenced by its hydro-system, including landform setting and the water regime, and different biogeochemical processes. In East Africa, it’s estimated that approximately 80% of wastewater is discharged untreated or partially treated. Although there are some studies dealing with the water purifying effect of wetlands, its application for in-situ water purification is still in its infancy. The main objective of this study is to determine the effect of natural riverine wetlands to reduce nutrient and organic pollutant concentrations. And to assess the difference among the study wetlands. A cross sectional study on water samples collected from different locations before entering the wetlands, within the wetlands and after passing through the wetlands, was conducted between February 5 and February 25, 2017. Data collection check list and standard field protocol were used to collect data from three urban wetlands (urban downstream wetland and two urban upstream wetlands). After compiling, data analysis was done using R statistical software. The results of this study showed a lower concentration of nutrients, and BOD in sites after joining the wetlands compared to those before the confluence of the wetland. This implied the presence of pollution attenuation by the wetlands. Among the three wetlands, the one located in the urban downstream revealed a higher level pollution. The PCA model showed nutrient and pollution gradient along its axis. Urban downstream wetland was positively correlated with nutrients as shown in the PCA biplot. In conclusion, the study revealed the potential of urban wetlands to reduce/ attenuate pollution from the water which passes through them. However, discharging unlimited amount of nutrients and other toxicants to wetlands may affect the functioning of wetlands | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/20860 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | urban wetlands | en_US |
| dc.subject | Wetlands | en_US |
| dc.subject | situ water | en_US |
| dc.subject | Jimma, Ethiopia | en_US |
| dc.title | Wetlands as Nature Based Solutions for In Situ Water Purification: The Case of Urban Wetlands, Jimma, Ethiopia | en_US |
| dc.type | Thesis | en_US |