Monitoring of quality indicators for well waters of stryi district

Hoivanovych, N. K.; Antonyak, Halyna; Kossak, H. M.

doi:10.31548/dopovidi2018.05.001

Cited by 4 publications

(3 citation statements)

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“…Water quality is analyzed according bacteriological indicators for drinking water: total microbial count and coli index (Table 2). The number of microorganisms in water depends on many abiogenic and biogenic factors: the organic matter content, the water flow rate, the temperature of the environment, the seasons, the location and contamination of the reservoir [1,9,10]. As a result of our research, it was established that the average annual number of microorganisms in the spring waters of Mostyska district exceeds the norm (no more than 100 CFU).…”

Section: Analysis Of Bacteriological Indicators Of Spring Water Qualitymentioning

confidence: 71%

“…The monitoring of the spring waters quality in Mostyska district was conducted in the laboratories of the Drohobych Ivan Franko State Pedagogical University. The work was carried out within the framework of the implementation of integrated monitoring of surface water quality in Lviv region [10,12,13]. In order to assess the quality of spring waters of some settlements of Mostyska district, seasonal (winter, spring, summer, autumn) samples of waters from some villages and cities of the territory were taken.…”

Section: Scheme Of Monitoringmentioning

confidence: 99%

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Integrated Monitoring of the Spring Water Quality in the Mostyska District of Lviv Region

Hoivanovych

Voloshanska

Monastyrska³

et al. 2020

Proceedings of the III International Scientific Congress Society of Ambient Intelligence 2020 (ISC-SAI 2020)

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Rural population of Ukraine mainly consume water from wells and individual wells, which (in the vast majority) are in unsatisfactory technical and sanitary condition. For the estimation of the quality of the spring waters in some settlements of Mostyska district, the seasonal samples of were taken in Mostyska, Malniv, Gusiakiv, Pidhat, Volytsia, Nagirne, and Krukenychi. Biotesting of well water was carried out, water was analyzed according to physicochemical and bacteriological indicators. It was established that toxicity is higher than average in the villages Krukenychi, Gusiakiv, Volytsia and Malniv, and in Mostyska high toxicity. The content of nitrites and phosphates did not exceed the MPC in all investigated waters. The content of nitrates and ammonia in the spring waters of the investigated area exceeded the MPC in most settlements, with the exception of samples from the villages Pidhat and Nagirne. In addition, only spring water from the villages Nagirne and Pidhat meets the bacteriological indicators for the quality of drinking water.

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Section: Analysis Of Bacteriological Indicators Of Spring Water Qualitymentioning

confidence: 71%

Section: Scheme Of Monitoringmentioning

confidence: 99%

Integrated Monitoring of the Spring Water Quality in the Mostyska District of Lviv Region

Hoivanovych

Voloshanska

Monastyrska³

et al. 2020

Proceedings of the III International Scientific Congress Society of Ambient Intelligence 2020 (ISC-SAI 2020)

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show abstract

“…In addition, agricultural runoff from cultivated lands and livestock farms also contributes to the pollution of surface waters in the region. Water contamination with debris, nutrients, persistent organic pollutants, oil and heavy metals due to anthropogenic causes leads to physical alterations and destruction of habitats, loss of biodiversity of aquatic ecosystems and a significant reduction in the use of water bodies for recreational purposes (Vignati et al, 2013;Antonyak et al, 2015;Hoivanovych et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Levels of Heavy Metals in Several Rivers of the Western Bug and Dniester Basins in the Lviv Region (Western Ukraine)

Antonyak

Lesiv

Panas

et al. 2019

SJPU

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Lviv region, one of the most urbanized and industrialized regions of Western Ukraine, faces environmental problems, including pollution of surface waters. The study was aimed to investigate the levels of heavy metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in the waters of three tributaries of the Western Bug River (Poltva, Rata and Kamyanka), as well as in the Dniester River and its two tributaries (the Zubra and Vivnya rivers) within the Lviv region. The results show that the degree of contamination of the Western Bug tributaries with heavy metals is considerably higher at the mouths of the rivers compared to river sources. In particular, metal concentrations at the mouth of the Rata River were 1.23–3.98 times higher than at its source, while water samples at the mouth of the Kamianka River were characterized by higher levels of Fe, Mn, Zn and Cd (2, 12–6.55 times) compared with the source of the river. Concentrations of several heavy metals, especially Fe, exceeded the maximum allowable levels in the waters of the analyzed rivers. Results of the study suggest a significant anthropogenic load in the catchment areas of the analyzed rivers within the Lviv region.

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Viability of sporogenic bacteria in an inert gas atmosphere

Koval

2020

Biolohichni systemy

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The viability of sporogenic bacteria under the conditions of bubbling inert gases (argon and helium) through the water system was investigated and the action of each studied gases on the process of its destruction in water was compared. Bacillus cereus bacteria type were as the investigated microobjects and, as the predominant microflora of different natural waters, with an initial microbial load of 104 per 1 cm3 of investigated water. According with the first-order kinetic equation were calculated the values of the effective rate constants of the bacteria destruction. The effective gas nature in the process of water purification from microorganisms is noted. The experiments were carried out in a glass reactor with constant cooling of tap water. The growth of the investigated bacteria were carried out by the deep method, followed by storage in a thermostat at T = 30 °C for 48 h. The number of microorganisms per unit volume of investigated water was determined by the total number of bacteria grown on the culture medium on Petri dishes and expressed in colony-forming units. The total flow rate of the bubbled gas was 1.4 dm3, which was fed at a rate of 0.2 cm3/s to the investigated water volume (75 cm3) throughout the duration of the process. The calculated total microbial count in natural water and various industrial wastewater was used to determine the initial number of microorganisms per unit volume of investigated water. The dynamics of bacterial numbers under the influence of gases on the water system is presented graphically. Colonies of B. cereus bacteria type are presented during growth on nutrient medium before and after bubbling of microbial water with gas. Decreasing of the bacterial cells number was observed in the atmosphere of both investigated gases, but with different activity. Comparison of the values of the effective rate constants of bacteria for argon and helium showed that the cell number decreased more actively under argon bubbling conditions. Active destruction of microorganisms under argon bubbling compared to helium was observed, regardless of the initial bacterial count in 1 cm3 of investigated water. The effect of argon on water containing bacteria is described by the greater value of the effective rate constant of cell destruction: kd(Ar) > kd(He). It is shown that the efficiency of water purification from microorganisms depends on the nature of the bubbled gas.

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Monitoring of quality indicators for well waters of stryi district

Cited by 4 publications

References 0 publications

Integrated Monitoring of the Spring Water Quality in the Mostyska District of Lviv Region

Integrated Monitoring of the Spring Water Quality in the Mostyska District of Lviv Region

Levels of Heavy Metals in Several Rivers of the Western Bug and Dniester Basins in the Lviv Region (Western Ukraine)

Viability of sporogenic bacteria in an inert gas atmosphere

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