Wyniki wyszukiwania - BazTech

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Assessment of the Impact of Military Actions on the Soil Cover at the Explosion Site by the Nemerov Method and the Pearson Coefficient Case Study of the City of Lviv

Petrushka Kateryna, Petrushka Ihor, Yukhman Yaryna

Journal of Ecological Engineering

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2023

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Vol. 24, nr 10

77--85

EN

The military actions of the Russian Federation’s aggression in Ukraine cause irreparable damage to the soil cover, realizing that its natural restoration will take decades. However, missile attacks on residential areas bring no less damage and trouble to Ukraine. The main goal of the conducted research was to determine the content of potentially toxic elements (PTE) in the soil at the site of the explosion and on its surface. Soil sampling was carried out at the explosion sites of the city of Lviv using the method of concentric circles. The soil research area is 30–50 m² (depending on the type of cruise missile), which allows assessing the distribution of PTE relative to the depth of the crater and on its surface. The soil samples were analyzed by X-ray fluorescence analyzer Expert-3L. The main studied elements were Cd, Cr, Cu, Ni, Pb, and Zn. The pollution index (Pi) was estimated using the Nemerov method. The degree of soil pollution was assessed by the ecological risk factor (Er), and the potential ecological risk index (Ri). Using the Pearson correlation index (PCI), their number and the possibility of distribution of heavy metals (HM) in the soil were determined. Similarity between levels of heavy metal concentrations was determined using cluster analysis (CA). The values of the environmental risk index of each element based on the Nemerov index show a very high level of pollution (Ps=48.64), exceeding the permissible value of Ps>3 by 15 times. The highest environmental risk factor (Er) is created by cadmium (Cd). The investigated elements concerning the environmental risk factor can be arranged in the following sequence: Cd>Cu>Pb>Ni>Zn>Cr>Ti. Considering the minimum values of potential environmental risk (RI), only two elements have a low coefficient of potential environmental risk (RI<40)—titanium and chromium. All other investigated elements have significant and very high environmental risk potential.

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Information Supply of Hydrotechnical Reconstruction Concept of Stebnyk Tailings Storage (Ukraine)

Mokryi Volodymyr, Petrushka Ihor, Dyakiv Vasyl, Dzhumelia Elvira, Salamon Ivan

Ecological Engineering & Environmental Technology

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2023

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Vol. 24, iss. 2

120--130

EN

The ecological condition of the Stebnyk tailings storage during the period of its operation and the development of the processes of filling it with brines to a critical level are analyzed. It is shown that the main reason for the current state of crisis of this object is its incorrect operation and the lack of an effective system for collecting and removing atmospheric water. The concept of hydro-technical reclamation of the tailings storage through the creation of the Stebnyk hydropark has been developed. The proposed technical solutions for the hydro-technical reclamation of the tailings storage include proposals for the design of a network of direct distribution and outlet channels on the territory of the already dry section No. 1, for the unloading of section No. 2. The design of the hydro-technical system “tailing storage – direct distribution and outlet channels channels” is based on a mathematical model of the water balance in conditions of continuous replenishment of ground and surface water and an increase in their level. The proposed hydro-technical network will provide control over the level of brines and discharge of water from the tailings storage facility. Geoinformation technologies were used to visualize the proposed technical solutions for the hydro-technical reclamation of the tailings storage. The implementation of the developed project proposals will ensure an environmentally safe hydrodynamic state of the “tailings storage – direct distribution and outlet channels” system, which will eliminate the threat of brine overflow through the protective dam, as well as the threat of dam breach and brine flow into water objects. Hydro-technical reclamation will ensure the environmental safety of human activities and water ecosystems of the water network of the Dniester river basin.

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Informational support on creation of the geoportal "Environmental Safety of Ukrainian-Polish Transboundary Territories" by technologies of robotized monitoring

Mokryy Volodymyr, Tomin Volodymyr, Niska Monika, Moroz Oleksandr, Petrushka Ihor, Bobush Olha, Tsyhaniuk Anna, Grechanyk Ruslan, Shemelynets Inessa

Studia Quaternaria

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2020

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Vol. 37, Nr 1

15--19

EN

The concept of creation of the geoportal "Environmental Safety of Ukrainian-Polish Transboundary Territories" has been developed. General principles and methodological approaches of spatiotemporal geographically distributed thematic data integration were substantiated. The geoinformation system, which is based on results of monitoring researches of objects of the nature reserve fund in the biosphere reserve "Roztochya", is considered. The geoinformation monitoring technologies ensure ecological safety management. The proposed geoportal determines directions of information technology implementation for transboundary monitoring of ecosystems in the euroregions.

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Perspective Technologies of the Treatment of the Wastewaters with High Content of Organic Pollutants and Ammoniacal Nitrogen

Malovanyy Myroslav, Moroz Oleksandr, Hnatush Svitlana, Maslovska Olga, Zhuk Volodymyr, Petrushka Ihor, Nykyforov Volodymyr, Sereda Andriy

Journal of Ecological Engineering

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2019

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Vol. 20, nr 2

8--15

EN

The paper analyzes the advanced technologies of wastewater treatment with a high content of organic pollutants and ammonium ions. Two different bi-stage scenarios for the treatment of such effluents are proposed. The first scenario includes the pretreatment in aerated lagoons and the final stage at the wastewater treatment plants after appropriate dilution with municipal sewages. The second scenario also includes the first stage in aerated lagoons with a tertiary treatment at the plant for cyanobacteria cultivation with the use of obtained biomass for biofuels production. The effects of the aeration periodicity on the leachate treatment efficiency and also on the composition of microbiocenosis in the aerated lagoons were investigated. The leachates of the Lviv landfill of municipal solid waste (MSW) were used in experimental investigations. The Lviv landfill of MSW was used for domestic and industrial wastes deposition for almost six decades, since the 1960s. It was found that the highest effect of ammoniacal nitrogen removal was obtained in the mode of periodic aeration, with the cycle duration of two hours including the one-hour aeration. It was found that the microorganisms extracted from the leachates of the Lviv MSW landfill are prospective for the new biotechnologies of treatment of the highly concentrated wastewaters, since this microbiocenosis is resistant to the widespread pollutants, in particular to heavy metal ions.