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1
Content available The Use of Binders of Natural Origin to Improve the Technology of Creating Fuel Briquettes from Wood Waste
Malovanyy Myroslav, Vronska Nataliya, Tymchuk Ivan, Zhuk Volodymyr, Moroz Oleksandr, Chornomaz Nataliya
Journal of Ecological Engineering
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2023
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Vol. 24, nr 11
314--320
EN
The method of wood waste utilization by pressing it into fuel briquettes is considered. It is proposed to use sulfate soap, a multi-tonnage waste of the pulp and paper industry, as an astringent. It is proven that as a result of adding a binder to the raw material, it is possible to carry out the process of forming briquettes with lower pressures, while ensuring the necessary statistical strength of the briquette. An appropriate method of supplying the binder is its preliminary mixing with wood waste. The most suitable concentration of the binder for fuel briquettes amounts to 6%. The use of a binder made it possible to reduce engine power by 40%, as well as increase the density of the obtained fuel briquettes by 10%.
2
Content available Sanitary, Microbiological Condition, and Ecological State of Surface Water Quality in the Upper Siret River Basin (Ukraine)
Burdenyuk Ivan, Masykevich Аndrii, Dombrovskiy Konstantin, Rylskyi Olexandr, Masykevich Yurij, Deyneka Svyatoslav, Malovanyy Myroslav, Tymchuk Ivan
Ecological Engineering & Environmental Technology
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2023
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Vol. 24, iss. 9
55--63
EN
This study aimed to spatially assess the ecological state of the upper Siret River basin in Ukraine, along with its main tributaries, using physicochemical and microbiological indicators. Additionally, we evaluated the impact of anthropogenic activities on surface water quality in the region. The research spanned one year, with nine sampling points ranging from the Siret River sources in the Pokutsko-Bukovynian Carpathians to the Romania border crossing area. Notably, a significant portion of the upper basin lies within the Vyzhnytskyi National Nature Park. Physicochemical analysis involved measuring pH, water turbidity, and concentrations of NH4+, NO3-, and CI- ions. Microbiological analysis focused on total and fecal bacteria, specifically E. coli species. Results revealed a significant correlation between population density, the absence of centralized sewage treatment facilities in large settlements, and the level of surface water pollution in the Ukrainian segment of the Siret River basin. The upper part of the river network, where the Vyzhnytskyi National Nature Park is located, displayed the cleanest waters. Downstream, surface water pollution increased, particularly near certain points outside large settlements and tourist complexes (Myhove, Berehomet, and Storozhynets). Our findings highlight the importance of using microbiological indicators to monitor the ecological state of Danube sources in the Eastern Carpathians.
3
Content available Use of Microbiocenosis Immobilized on Carrer in Technologies of Biological Treatment of Surface and Wastewater
Malovanyy Myroslav, Masikevych Andrij, Masikevych Yurij, Blyzniuk Mykola, Tymchuk Ivan, Zhuk Volodymyr, Hnatush Svitlana, Kharlamova Olena, Iurchenko Valentyna, Vlasyk Leonid
Journal of Ecological Engineering
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2022
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Vol. 23, nr 9
34--43
EN
The role of fibrous carrer in the formation of microbiocenosis, which provides purification of aquatic environments, was studied. The prospects of using the "Vija" fibrous carrer for cleaning the watercourses of mountainous areas were studied. The species composition, as well as the kinetics of periphyton formation on fibrous carrer, were established. The species composition of the microbiocenosis, which is formed on carrer in the mode of active aeration of landfill filtrates and the prospects of using the method of aerated lagoon for filtrate treatment were studied.
4
Content available 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
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2022
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Vol. 23, iss. 2
107--112
EN
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%.
5
Content available Integrated Aerobic-Reagent Technology for the Pre-Treatment of Leachates from Municipal Solid Waste Landfills
Malovanyy Myroslav, Zhuk Volodymyr, Boichyshyn Lidiya, Tymchuk Ivan, Vronska Nataliya, Grechanik Ruslan
Ecological Engineering & Environmental Technology
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2022
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Vol. 23, iss. 1
135--141
EN
Accumulation of leachate at municipal solid waste (MSW) landfills is a significant environmental problem. The analysis of known technologies of leachate treatment was performed. It was established that it is not effective to use the same technology to treat leachate in two different periods: before the landfill closure and reclamation process as well as afterwards. The application of integrated two-stage aerobic-reagent pre-treatment technology with subsequent full treatment at municipal wastewater treatment plants was proposed for these purposes. The results of laboratory studies of optimal parameters of technology realization for the pre-treatment of Lviv MSW landfill leachate were presented. Recommendations for the practical implementation of the combined two-stage aerobicreagent technology for the landfill leachate pre-treatment were developed.
6
Content available Biological Reclamation Using a Sewage Sludge-Based Substrate – A Way to Ensure Sustainable Development of Urban Areas
Tymchuk Ivan, Malovanyy Myroslav, Bota Oleh, Shkvirko Oksana, Popovych Olena
Ecological Engineering & Environmental Technology
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2022
|
Vol. 23, iss. 1
34--41
EN
The monitoring studies were carried out on the territory of the Lviv wastewater treatment plants. The volumes of accumulated stocks of the sludge site were determined, its qualitative and quantitative indicators were identified, and the presence of limiting factors was established. On the basis of the obtained data, the 2-D models characterizing the vertical and horizontal accumulation of elements were created. The mioindication studies were conducted to determine the feasibility of using sewage sludge as a growth substrate. Modeling was performed to determine the potential area of reclaimed land.
7
Content available Analysis of Prospective Technologies of Food Production Wastewater Treatment
Havryshko Marianna, Popovych Olena, Yaremko Halyna, Tymchuk Ivan, Malovanyy Myroslav
Ecological Engineering & Environmental Technology
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2022
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Vol. 23, iss. 2
33--40
EN
The food industry is one of the industrial activities that uses a large amount of water and the high content of dissolved organic matter and nitrogen in production effluents is their characteristic feature. The treatment technology of such industrial effluents is a combination of different technologies and treatment methods blocks depending on the parameters of wastewater. The choice of efficient, environmentally friendly and energy efficient biotechnology of wastewater treatment will allow its successful application in most food industries. Treated effluents can be considered as a source of water for watering plants in the area to reduce the overall use of water in the process, and as a prospect of returning to the overall process for use, for example, for washing vegetables and fruits. The physico-chemical parameters of industrial waters of food industry enterprises were analyzed and their impact on the environment was monitored. On the basis of the perspective technologies review of the food industry wastewater treatment the technological scheme for effective treatment of industrial wastewater was offered.
8
Content available The Strategy of Environmental Danger Minimization from Poultry Farms Waste
Malovanyy Myroslav, Kanda Mariia, Paraniak Roman, Odnorih Zoriana, Tymchuk Ivan
Journal of Ecological Engineering
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2021
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Vol. 22, nr 5
229--237
EN
An impact of poultry farms on the environment caused by ammonia emission from chicken manure has been studied. A negative impact minimisation method by adding natural sorbents to the bedding composition has been proposed. The optimum natural adsorbents compositions (clinoptilolite and palygorskite) for adding to the bedding as well as the optimum mixture ratio of these adsorbents to chicken manure mass have been determined. The optimum conditions for obtaining granulated organic-mineral fertiliser of prolonged action based on this composition have been studied. In the result of the research data analysis a technological scheme for organic-mineral fertiliser production based on chicken manure and a mixture of natural adsorbents have been proposed.
9
Content available Monitoring of the Influence of Landfills on the Atmospheric Air Using Bioindication Methods on the Example of the Zhytomyr Landfill, Ukraine
Malovanyy Myroslav, Korbut Mariia, Davydova Irina, Tymchuk Ivan
Journal of Ecological Engineering
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2021
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Vol. 22, nr 6
36--49
EN
The paper presents the results of research on the implementation of monitoring of the landfills influence on the atmospheric air using bioindication methods on the example of the Zhytomyr landfill (Ukraine)–one of the typical Ukrainian landfills, which is operated with minimal environmental protection measures. A comprehensive study of atmospheric air pollution in the landfill area was carried out using a human sensor system and an integral assessment using bioindication (lichens were chosen as bioindicators). The study revealed a reliable exponential dependence for modeling the relationship between the distance from the source of gas formation (solid waste landfill in the city of Zhytomyr) and the intensity of odor. The level of atmospheric air pollution was also determined based on the assessment of the projective coverage of the tree trunk with lichens. The research revealed an exponential dependence for modeling the relationship between the distance from the landfill boundary and the total coverage of the tree trunk with lichens. The results of the analysis confirmed the correctness of the use of the aforementioned method. The relationship between the results obtained by the lichen indication method and the strength of the odor from the landfill was evaluated. Based on the results of calculating the relative values of the assessment of atmospheric air pollution by the method of coverage of the tree trunk with lichens and the strength of the odor, a regression analysis was carried out and mathematical relationships were determined, that most accurately describe the change in these indicators with distance from the landfill boundary. It is proved that both tested methods can be used in Ukrainian realities to monitor the state of atmospheric air in the area of influence of municipal landfills, depending on the purpose of research. The analysis of the research results confirmed the significance of the results of the obtained assessment of the impact of the Zhytomyr solid waste landfill on the state of atmospheric air. The materials of these studies can find further application for the formation of databases of knowledge of landfills, which will allow to develop a strategy for managing them as an object of increased environmental hazard.
10
Content available Assessment of the Prospects of Application of Sewage Sludge from Lviv Wastewater Treatment Plants for the Purpose of Conducting the Biological Reclamation
Vankovyсh Dmytro, Bota Oleh, Malovanyy Myroslav, Odusha Mykola, Tymchuk Ivan, Sachnyk Iryna, Shkvirko Oksana, Garasymchuk Vasyl
Journal of Ecological Engineering
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2021
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Vol. 22, nr 2
134--143
EN
The prospects of using the sewage sludge from Lviv wastewater treatment plants for biological reclamation was assessed. On the basis of the results of the monitoring of the qualitative and quantitative composition of sewage sludge accumulated in silt fields, the dependences of the distribution of sanitary-microbiological and ecological-chemical characteristics of the accumulated sludge were investigated. Agroecological laboratory studies on estimating the possibility of using sewage sludge in a mix with natural sorbents as a substrate for cultivation of plants was carried out.
11
Content available Sewage Sludge as a Component to Create a Substrate for Biological Reclamation
Tymchuk Ivan, Malovanyy Myroslav, Shkvirko Oksana, Yatsukh Katerina
Ecological Engineering & Environmental Technology
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2021
|
Vol. 22, iss. 4
101--110
EN
The main ways of sewage sludge disposal in the European Union and Ukraine were considered. The main problems of sludge utilization in Ukraine were identified. Research on the possibility of using a substrate based on sewage sludge for biological reclamation of disturbed lands was conducted. The quality of the sludge from Lviv WWTP was determined. The best substrate composition for biological land reclamation was determined by using bioindication. It was established that the use of settled sludge observed inhibition of plant growth and development. Introducing additional components to the substrate, in the form of sorbents, makes it possible to increase the content of sewage sludge. Positive changes in plant growth and development when using a soil-based substrate, sewage sludge and sorbent were observed.
12
Content available Review of the Global Experience in Reclamation of Disturbed Lands
Tymchuk Ivan, Malovanyy Myroslav, Shkvirko Oksana, Chornomaz Nataliya, Popovych Olena, Grechanik Ruslan, Symak Dmytro
Ecological Engineering & Environmental Technology
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2021
|
Vol. 22, iss. 1
24--30
EN
The article deals with the global experience related to the reclamation of land disturbed due to mining. The experience of Ukraine in carrying out the biological reclamation of disturbed lands as a result of mining operations was analyzed. The directions of land reclamation in the world were defined. The plant species best used for biological reclamation of disturbed lands were determined.
13
Content available Assessment of the Condition of Pine Plantations in the Area of Influence of Municipal Waste Landfills on the Example of the Zhytomyr Landfill, Ukraine
Korbut Mariia, Malovanyy Myroslav, Davydova Irina, Grechanik Ruslan, Tymchuk Ivan, Popovych Olena
Ecological Engineering & Environmental Technology
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2021
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Vol. 22, iss. 5
40--46
EN
The paper presents the results of research to assess the degree of transformation of forest ecosystems in the area of influence of the Zhytomyr landfill (Ukraine) - one of the typical Ukrainian landfills, which is operated with minimal implementation of environmental protection measures. The study was conducted to identify the relationship between the condition of plantations and the functioning of municipal solid waste landfills. In the study of the estimation of the transformation degree of forest ecosystems in the area of influence of the municipal solid waste landfill in Zhytomyr, it was established that in the studied areas there was a decrease in bonitet by I-II classes, completeness by 0.1-0.2 units, growth by 13-35% in comparison with background values. On the basis of the research of the condition of pine plantations by categories of vital activity of trees the integral indicator was calculated – the index of the condition of forest stands, which characterizes the degree of their damage in the event of aerial pollution of soil and groundwater. It was determined that the maximum values of the index of forest stands condition were observed in the area closest to the landfill (2.88 units), i.e, these are severely weakened stands, the minimum in the control (1.28). Based on the results of the studies, it was established that Scots pine is a convenient and acceptable bioindicator for assessing the state of the environment in the area of influence of municipal landfills provided that its distribution is uniform on the territory and it is available for research. The sanitary condition of pine plantations deteriorates with the approach to the source of pollution. According to the established indices of the condition of pine plantations, a regression analysis was performed and a mathematical dependence was determined, which most accurately describes the change of these indicators with the distance from the landfill boundary. The approach used for bioindication studies of conifers can be recommended for implementation in practice as a method for assessing the transformation of the environment in the area of influence of municipal solid waste landfills.
14
Content available Wastewater a Source of Nutrients for Crops Growth and Development
Tymchuk Ivan, Shkvirko Oksana, Sakalova Halyna, Malovanyy Myroslav, Dabizhuk Tetiana, Shevchuk Oksana, Matviichuk Oleksandr, Vasylinych Tamara
Journal of Ecological Engineering
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2020
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Vol. 21, nr 5
88--96
EN
The article deals with the main methods of nutrient removal from wastewater, as well as presents promising technologies and techniques. Struvite was characterized by a complex phosphorus fertilizer. The influence of struvite on the processes of germination of cultivated plants was investigated. The possibility of creating a growth substrate as an inexpensive and effective alternative to the disposal of the man-made wastes that contain an organic component was identified. The composition of the growth substrate was selected to ensure its functional properties. The growth substrate was tested by bioindication. Subsequently, the modification of the substrate by adding natural sorbents.
15
Content available Adsorption Extraction of Chromium Ions (III) with the Help of Bentonite Clays
Malovanyy Myroslav, Palamarchuk Olga, Trach Iryna, Petruk Halyna, Sakalova Halyna, Soloviy Khrystyna, Vasylinych Tamara, Tymchuk Ivan, Vronska Nataliya
Journal of Ecological Engineering
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2020
|
Vol. 21, nr 7
178--185
EN
This work is dedicated to the development of scientific technologies of wastewater purification of different industrial enterprises from chrome ions through adsorption with the help of bentonite from Cherkasy field under dynamic conditions. The prospects and efficacy of bentonite clays application for wastewater purification are confirmed by their advantages over other sorbents, that is: they win in accessibility, cost, and possibility of regeneration and multiple applications. The level of wastewater purification during adsorption with a stationary sorbent layer under static conditions and under conditions of perfect mixing at different concentrations of chromium ions (III) and quantities of the dosed sorbent was determined. The significant difference in the purification level ranges from 70–87% and is more dependent on the stock concentration of chromium ions. It was found that the purification time of the same volumes of solutions for low concentrations is almost twice shorter under constant stirring, and of the same level at the stock concentrations of 1500 mg/dm3. The technological schemes of wastewater purification from the heavy metal ions contamination were developed.
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