Investigating the Challenges and Opportunities of Centralized Domestic Wastewater Management in Kaliti Catchment, the Case of Akaki-Kaliti Sub-City, Addis Ababa

No Thumbnail Available

Date

2020-06

Journal Title

Journal ISSN

Volume Title

Publisher

Addis Ababa University

Abstract

Efficient ways of managing domestic wastewater discharges is the foundation of sustainable and modern urban city development. Sustainability of urban water system stands on appropriate treatment mechanisms and reuse of wastewater discharges. As a result, wastewater can be considered not as a problem that requires to be disposed of but rather as a variety of local resources. The background of this study in general relays on human factors, a cause to pollute the environment with various day to day activities. So the Objective of the study is to examine the challenges and opportunities of domestic wastewater management in Addis Ababa city based on study conducted in Akakii Kaliti subcity. The data was collected through survey questioners, interview and physical observation of the study area. Primary and secondary data was collected from households and relevant stakeholders in Addis Ababa Water and Sanitation Authority and Kaliti treatment plant. Various aspect of wastewater management was inspected on site. Simple random sampling was applied to select the sample households, whereas, Purposive sampling was used to select the sample Sub-city, and key informants for interview. By this sampling technique 138 respondents were selected from the 181202 total populations. Descriptive statistics analysis used to analyze data and the collected data were analyzed using statistical software (SPSS version 24.0). The capacity of government, societal attitudinal change, and technology and manpower are the major factors of efficient and effective wastewater managements respectively. Most of the respondents do not accepted the treated wastewater purity and the treatment efficiency of Kaliti treatment plant below 50% for irrigation, carwash and toilet purpose. In the field study there is no private organization, which participates in the treatment processes. However government is not attending the demand of wastewater treatment. The Luck of adequate sewerage system in the city and deteriorations of sewer line and luck of regular repair and maintenance are the main factors to reach the waste at central level. In the study area wastewater become more complex and the quantity has also increased from time to time. Lack of awareness and enforcement are some of the challenges facing wastewater treatment plant in Addis Ababa city administration. Kaliti wastewater treatment plant is currently used up flow anaerobic sludge blanket reactors trickling filters technology, but it operates under its design capacity. Therefore, domestic wastewater discharges from the city households should be administered sustainably.

Description

Keywords

Domestic Wastewater, Addis Ababa, Wastewater Management, Impact of Wastewater Treatment

Citation