Greenhouse Gases Emissions from Waste Stabilization Pond (WSP) at Jimma University, Institute of Technology campus, Kitto Furdisa, Jimma, Ethiopia

Abstract

The most common GHG’s emitted from wastewater treatment schemes are Carbon Dioxide, Methane and Nitrous Oxide. Such gasses produce an effect on an environment where we live by producing cover to hold heat of return. Hence, this research paper tries to estimate the emission of such gasses from Kitto Furdissa Campus of Jimma Institute of Technology (JIT) treatment plant for wastewater. The treatment plant has a total area of about 69,236.70 m2 with two (2) anaerobic pond, one (1) Facultative Pond, and four (4) maturation pond for the whole treatment unit. The pond was sampled twice from each unit and proportionate average was analyzed. The data collection was carried out in March, 2019, in the season of winter to summer in Ethiopia, Jimma and From 10:00 am to 2:50 pm. The greenhouse gas (GHG) estimation was carried out based on the guidelines on IPCC (2006). According t this result the Methane (CH4) emission was estimated to be 3.86 ktCO2-eq/year. The main process for emission was the organic decomposition through Methanogenesis. Whereas, the Nitrous Oxide (N2O) emission was estimated to 0.005 kg CO2eq which was mainly from nitrification of denitrification-nitrification processes. Hence, we try to recommend the organization has to have the mechanism of control and well management for the Oxidation Pond (OP) to be functional i.e. Denitrification has to be started and Methanogenesis has to be extended