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Energy efficiency economics of conversion of biogas from the fermentation of sewage sludge to biomethane as a fuel for automotive vehicles

Ciuła Józef, Gaska Krzysztof, Iljuczonek Łukasz, Generowicz Agnieszka, Koval Viktor

Architecture Civil Engineering Environment

2019

Vol. 12, no. 2

131--140

The paper presents the analysis of efficiency and energy economics potential applicability of biomethane as an alternative fuel for powering company owned motor vehicles and public transport vehicles produced by the conversion of surplus biogas generated in municipal sewage treatment plants. Biogas produced at municipal wastewater treatment plants in the process of anaerobic fermentation of sewage sludge is a source of renewable energy used for energy generation. Currently in Poland, the most commonly applied management method of biogas produced from sewage sludge involves the production of energy in a cogeneration system. Having in mind the condition of the natural environment, the search for alternative fuels for motor vehicles is underway. One of the types that can be used is biomethane, produced by the conversion of biogas produced in the fermentation process of organic wastes contained in sewage sludge. The biogas purified to contain about 95% of methane can be used in vehicles designed to burn gaseous fuel. In order to implement the conversion process of biogas to biomethane, it is necessary to work out a balance sheet of biogas produced at the sewage treatment plant, to study its chemical composition and to select the optimal technology to obtain high-energy gas fuel that meets required standards. In the course of the biogas conversion process, carbon dioxide is removed, which is regarded here as the so-called energy ballast. The technology used for powering motor vehicles by means of biomethane has been successfully implemented in many countries of the European Union. In view of environmental considerations, the proposed solution is generally supported because biomethane-powered engines have lower levels of emissions harmful to people and the environment.

Problem uciążliwości zapachowej na komunalnych oczyszczalniach ścieków

Specjalski K. P.

Gaz, Woda i Technika Sanitarna

2016

Nr 2

62--68

Opracowanie prezentuje aktualny stan prawny ochrony powietrza przed odorami w Polsce. Zaprezentowano także różne technologie oczyszczania powietrza zawierającego związki odorowe na terenie komunalnych oczyszczalni ścieków i w systemach kanalizacji sanitarnej. Przedstawiono konkretne obiekty w Polsce, na których zastosowano różne technologie oczyszczania powietrza złowonnego z opisem parametrów i zdjęciami urządzeń. Zarysowano kierunek rozwojowy aplikowanych technologii. Zwrócono uwagę, że dwustopniowe technologie oczyszczania powietrza a szczególnie z użyciem złóż biologicznych zraszanych są technicznie atrakcyjne i kosztowo efektywne nie tylko inwestycyjnie ale również w eksploatacji w porównaniu chociażby z oczyszczaniem za pomocą skruberów chemicznych (przykład takiego rozwiązania z USA gdzie podjęto działania w kierunku zamiany na złoża biologiczne zraszane).

This study presents the current legal status of air protection against odors in Poland. Were presented different air cleaning technologies in municipal wastewater treatment plants. Contains concrete objects in Poland with description and photographs. Shows the direction of technology development. The two stages technology with using bio-trickling filters were determined to be the most cost-effective control technology for treating the exhaust air from different places in wastewater treatment plants. The selection of bio-trickling filters met the goals of using a control technology that is “green”, uses no chemicals, generates no hazardous residuals, has relatively low costs and requires low maintenance (such as the USA, where attempts to convert chemical scrubbers for bio-trickling filters).