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Potential of the Co-Digestion of the Sewage Sludge and Plant Biomass on the Example of Lviv WWTP

Malovanyy Myroslav, Voytovych Ivan, Mukha Orest, Zhuk Volodymyr, Tymchuk Ivan, Soloviy Christina

Ecological Engineering & Environmental Technology

2022

Vol. 23, iss. 2

107--112

Energy strategies of most developed countries include the sustainable development of all types of renewable energy, including energy generation from biomass. Co-digestion of sewage sludge and plant biomass has a number of synergetic effects, leading to increased digestion rate and output of biogas. The range of potentially effective co-digestion of sewage sludge with plant raw materials was considered on the example of the full-scale estimation study for Lviv WWTP, Ukraine. Substitution of the 25% of dry organic matter of sewage sludge by the same amount of plant raw matter can increase the total output of the methane at the biogas station by about 5.8%.

Facilities and problems of processing organic wastes by family-type biogas plants in Ukraine

Voytovych Ivan, Malovanyy Myroslav, Zhuk Volodymyr, Mukha Orest

Journal of Water and Land Development

2020

no. 45

185--189

The potential of organic wastes in Ukraine for biogas production and the prospects of using the family-type biogas plants for this purpose are shown. In the biogas laboratory of the Ukrainian National Forestry University the efficiency of the anaerobic mesophilic digestion of chicken manure of Poltava poultry farm, Kamianets-Podilsky poultry farm and sewage sludge from Lviv wastewater treatment plant (WWTP) was investigated. Different integral indicators of the biogas production and significantly different dynamics of its formation over time were obtained for three investigated substrates. The value of average specific biogas production from the sewage sludge of Lviv WWTP is 0.494 dm3∙(day∙kg FM)–1, which is 5.1 times more comparing the chicken manure of Kamianets-Podilsky poultry farm and 8.0 times more than for the chicken manure of Poltava poultry farm. Strong negative effect of antibiotic treatment of chickens on methane content in the obtained biogas was established experimentally.