Management of sewage sludge energy use with the application of bi-functional bioreactor as an element of pure production in industry

¹ State University of Applied Sciences in Nowy Sącz, Institute of Technology, 1 Stanisława Staszica, 33-300 Nowy Sącz, Poland
² Institute of Water and Wastewater Engineering, Silesian University of Technology, 18 Konarskiego, 44-100 Gliwice, Poland
³ Water Networks Company, 22 Wincentego Pola St., 33-300 Nowy Sącz, Poland
⁴ Odesa Institute of Trade and Economics of Kyiv National University of Trade and Economics, 6 Inhlezi, 65070 Odesa, Ukraine

^* Corresponding author: victor-koval@ukr.net

Abstract

The increase in sewage sludge makes it necessary to improve the direction of sewage sludge management policy and disposal, which requires a larger amount of incineration or land reclamation. It was shown that the result of methane fermentation, which is a more complex process of extracting energy contained in waste. High costs of implementation of sludge processing technology and low efficiency of sewage treatment plants in which sewage sludge is insufficient to recover energy from them, have a negative impact on the development of energy generation from sediments. The model waste system for energy is characterized, which includes two stages. The proposed solution can be applied to small wastewater treatment plants and it is justifiable to use the concept of bi-functional bioreactors in which anaerobic and aerobic processes can be carried out with much lower construction and maintenance costs. The use of bioreactors allows to exclude the energy demand needed to stabilize sewage sludge at a low cost compared to the expenditure that is currently incurred by disposal. The proposed solution works perfectly with industrial plants, due to the possibility of their creation in the time of the creation and application of a circular economy.