Подобрување на енергетската ефикасност на пречистителни станици за отпадни води преку анализа на работата и востановување на референтни енергетски параметри

Abstract

This research was conducted during 2015 - 2017 at the Waste Water Treatment Plant (WWTP) in Berovo, R.Macedonia (14,000 PE). The purpose of the research is achieving energy efficiency of the wastewater treatment plants by measuring, comparing and analysis of the energetic parameters and proposing measures for increasing the efficiency. The objectives of this paper are presentation of a methodology for energy and technical audit, analysis and introducing measures for increasing energy efficiency of the existing WWTPs in R.Macedonia and setting standards, referent energetic parameters, for the relatively large number of plants that are planned to be constructed in order to provide their sustainability. Berovo WWTP was selected as а case study for testing the methodology for energy and technical audit with performing analysis of the plant operation, modeling with analysis of the results, and proposal of measures for increasing energy efficiency of the plant and decrease of the total energy consumption. The biological part of the treatment plant, more precisely the aeration system, was identified as the largest energy consumer in the plant with 60 – 70% of total energy consumption. Therefore, most of the attention was given to the increase of the energy efficiency of the plantbyapplying the following measures to the biological treatment process: adjusting the sludge age, change of the aeration system regime during low influent flow periods and changing the treatment process.