Aquatic Ecosystems and Environmental Management Water Quality of Akaki Rivers and Its Impact on Irrigated Vegetable Farms

dc.contributor.advisorKifle, Demeke (PhD)
dc.contributor.authorAtalay, Kassahun
dc.date.accessioned2019-04-09T09:22:07Z
dc.date.accessioned2023-11-09T14:10:19Z
dc.date.available2019-04-09T09:22:07Z
dc.date.available2023-11-09T14:10:19Z
dc.date.issued2018-06-03
dc.description.abstractUrbanization, industrialization and agricultural development practices are the main causes for the environmental degradation of surface waters including rivers. The highly impacted Akaki River, the subject of the present study, is being used for irrigation, watering livestock, sanitation and other domestic purposes. This represents a serious threat to public health and life of aquatic and terrestrial organisms. Thus, with the view of gathering information usable in the development of strategies of protection of this aquatic resource, physico-chemical and microbial water quality parameters of the irrigation water, irrigated soils and leafy vegetables cultivated on them were assessed from March to August, 2017. The biotic transfer factor (TF) and Target Health Quotient (THQ) for all measured metals were also calculated. The observed levels of Turbidity, TSS, TDS, TP, and Nitrite surpassed the acceptable levels set for domestic use and general water quality assessment criteria. DO and BOD5 levels also failed to comply with the safe limits set for aquatic life and general water quality assessment criteria. The levels of Faecal coliforms, Fe, Mn, Cu, Zn and Cr surpassed the maximum levels recommended for the safe use of wastewater for irrigation of vegetables. Vegetable farms in and around Addis Ababa, which were irrigated with the polluted waters of Akaki River exhibited concentrations of Zn, Cr, Cd and Cu in the soils of farm plots and of Fe, Zn, Cr, Ni, and Pb in vegetables grown on them that surpassed the safe limits recommended by international organizations. The potential health risk indicator (THQ) for Fe, Mn, Pb and Cd also reached values above 1, suggesting that they may pose health effect on consumers. The present findings suggest the need for immediate measures to protect consumers and the aquatic resource.en_US
dc.identifier.urihttp://10.90.10.223:4000/handle/123456789/17726
dc.language.isoenen_US
dc.publisherAddis Ababa Universityen_US
dc.subjectAkaki Riveren_US
dc.subjectFaecal Coliformsen_US
dc.subjectHeavy Metalen_US
dc.subjectNutrientsen_US
dc.subjectSoilen_US
dc.subjectTotal Coliformsen_US
dc.subjectVegetableen_US
dc.subjectWaste Wateren_US
dc.titleAquatic Ecosystems and Environmental Management Water Quality of Akaki Rivers and Its Impact on Irrigated Vegetable Farmsen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Kassahun Atalay 2018.pdf
Size:
3.26 MB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Plain Text
Description:

Collections