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Current state of odour nuisance from biogas plants in Slovakia

Salva Jozef, Poništ Juraj, Lobotková Martina, Vanek Miroslav, Schwarz Marián, Veverková Darina

Environment Protection Engineering

2021

Vol. 47, nr 3

67--81

The article deals with the current state of odor nuisance from biogas plants in Slovakia in the context of changes in the legislative regulatory for these operations regarding increased odor control requirements. Research is focused on direct analysis of odor status in the vicinity of existing biogas plant operations in regions of Slovakia based on information obtained from local government representatives and the competent administrative authorities. Biogas plants were divided into groups according to identified frequency of odor. The research also focuses on the analysis of the separation distance of biogas plants from the nearest residential area and the impact of the storing method of inputs and outputs from the biogas process on odor. It is concluded that measures adopted in the amendment will not affect the already satisfactory odor situation in location of majority of biogas plants and most of the signs of odor are caused by a relatively small percentage of biogas plants. The method of storing has only a secondary synergistic effect and primary factors of odor formation are different.

Assessment of the impact of municipal solid waste incineration bottom ash used as partial cement replacement in cement mixture using bioassays

Fialová Jarmila, Hybská Helena, Samešová Dagmar, Lobotková Martina, Veverková Darina

Archives of Environmental Protection

2019

Vol. 45, no. 4

104--113

The paper is focused on the research of ecotoxicological properties of mortar prisms produced with partial cement replacement by ash from energy recovery of municipal waste. Two types of ash were used: ash from incineration and ash from municipal waste gasification. According to the Waste Catalogue, ash is considered other waste, which is non-hazardous and nowadays it is predominantly landfilled. Negative results of standardized biotests are inevitable precondition for the use of ash for construction products. The results from both biotests (acute toxicity test on aquatic organisms Daphnia magna and growth inhibition test of higher cultivated plants Sinapis alba) confirmed suitability of cement replacement by ash from energy recovery of municipal waste. Environmental safety of produced mortar prisms is different. Recommended replacement of cement with ash, obtained from municipal waste gasification, is 10% and with ash gained from incineration is 15%. The use of this type of waste in construction industry will lead to the decrease of landfilled waste. Due to the replacement of cement with waste (from industrial branches) natural resources of raw materials used in the process of cement production are saved.