Edyta Laskawiec | Silesian University of Technology (original) (raw)
Papers by Edyta Laskawiec
Journal of Ecological Engineering, 2018
New priorities for the environment have resulted in a reassessment of modern technology for treat... more New priorities for the environment have resulted in a reassessment of modern technology for treatment of urban wastewater. Urban wastewater treatment mainly involves the elimination or reduction of anthropogenic organic micropollutants in the aquatic environment. In this paper, the effectiveness of bisphenol A elimination from wastewater, after biological treatment, through a complex ultrafiltration/reverse osmosis purification process was evaluated. The effectiveness of the wastewater treatment process in the tested system was also evaluated with a number of other physical and chemical analyses for pH, turbidity, colour, absorbance, TOC, phenol index, conductivity and the concentration of selected heavy metals. Within this study, the change in the hydraulic performance of the membranes was also investigated. The effectiveness of the reduction of bisphenol A concentrations during the process of ultrafiltration was small, due to the significant difference between the size of the pores of the membrane and the size of eliminated micropollutants. In the process of reverse osmosis, the wastewater treatment system reported that the concentration of bisphenol A was reduced by 68%. In the tested treatment system, the ultrafiltration/reverse osmosis completely removed colour, lead and chromium. Other contaminants were eliminated by more than 31%. In both membrane processes, there was evidence that the membrane pores were blocked, but this occurred to a greater extent during the process of reverse osmosis.
Gaz, Woda i Technika Sanitarna, May 16, 2018
Inżynieria Ekologiczna, Aug 1, 2017
3 Talmex sp. z o.o. Chopina 94, 43-600 Jaworzno STRESZCZENIE Odpływ z oczyszczalni ścieków komuna... more 3 Talmex sp. z o.o. Chopina 94, 43-600 Jaworzno STRESZCZENIE Odpływ z oczyszczalni ścieków komunalnych poddano porównawczo oczyszczaniu w procesie ultrafiltracji z wykorzystaniem membrany ceramicznej i polimerowej. Filtrację prowadzono w systemie cross-flow w warunkach ciśnienia transmembranowego procesu 0,1 MPa-membrana ceramiczna i 0,2 MPa-membrana polimerowa oraz w temperaturze 20°C. Skuteczność procesu oceniono wykonując różne analizy fizyko-chemiczne (m.in. pH, mętność, barwa, absorbancja, OWO i indeks fenolowy). Włączono również ocenę toksykologiczną (stosując jako organizm wskaźnikowy bakterie bioluminescencyjne Aliivibrio fischeri) oraz mikrobiologiczną badanych próbek wodnych. Podczas filtracji badano wydajność hydrauliczną membran. Określono, że skuteczność procesu zależy od warunków prowadzenia filtracji membranowej, przy czym lepsze efekty usunięcia zanieczyszczeń organicznych odnotowano w przypadku membrany polimerowej niż ceramicznej. Jednak membrana polimerowa w porównaniu do membrany ceramicznej była bardziej podatna na zjawisko blokowania porów powodujące obniżenie wydajności hydraulicznej. Bez względu na rodzaj membrany permeaty nie były toksyczne jak i nie zawierały mikroorganizmów.
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Ecological Chemistry and Engineering S, 2020
The possibility of applying a colloidal solution of nanosilver in the closed circuit of pool wate... more The possibility of applying a colloidal solution of nanosilver in the closed circuit of pool water treatment as a complementary disinfectant with chlorine compounds was presented. The applied nanosilver solution is characterized, by hygienic certificate, as having a very high biocidal effect. Samples of pool water for the control were taken from 5 points of a pool circuit. The safety of the water was appraised by comparing the bacteriological and physicochemical test results with the admissible values specified by hygienic requirements. The results show that nanosilver solution can be successfully applied for precoating the filter bed and supporting the disinfection system. Special attention was paid to the bacteriological purity and stability of the disinfectant concentration. The influence of concentration of colloidal nanosilver (0-25 mg/dm3) on bacterial bioluminescence, crustacean mortality and macroscopic effect of root growth and seed germination of selected plants was analys...
E3S Web of Conferences, 2018
Recent reports in the literature relate to the identification of various substances in the pool w... more Recent reports in the literature relate to the identification of various substances in the pool water, including low-molecular weight pharmaceuticals that can react with chlorine residues contributing to the formation of a large group of irritant and toxic compounds. These substances are not covered by standard monitoring. As part of this work, the authors present information on the methods for assessing the quality of the swimming pool water. Common processes used in swimming pool water treatment systems were described. Previous experience of the authors in the use of a detailed assessment of the quality of the swimming pool water on the basis of toxicity tests was presented. The authors have researched the application of pressure driven membrane filtration for the improvement of the efficiency of the swimming pool water treatment.
GAZ, WODA I TECHNIKA SANITARNA, 2016
Environmental Monitoring and Assessment, 2020
Recommendations regarding disinfection by-products (DBPs) in pool waters consider the content of ... more Recommendations regarding disinfection by-products (DBPs) in pool waters consider the content of trihalomethanes (THMs) and combined chlorine (CC) as indicators of DBPs based on which the health risk for swimmers and staff of pool facility can be determined. However, the content of DBPs in swimming pools depends on many factors. In this paper, the influence of selected factors (physicochemical parameters of water and technological parameters) on the content of THMs and CC in pool water was determined. During the 6-month period, 9 pools of various functions were analyzed. The water in pools was subjected to the same method of treatment. The content of THMs and CC was compared against the content of organic matter, free chlorine and nitrates, pH, temperature, redox potential and turbidity, technological, and operational parameters. The THM content did not exceed the limit value of 0.1 mg/L. The content of CC varied significantly, from 0.05 to 1.13 mg Cl2/L. It was found that a very la...
Sustainability
Swimming pools are examples of water-intensive facilities, where solutions for reducing economic ... more Swimming pools are examples of water-intensive facilities, where solutions for reducing economic and environmental costs are searched with increased frequency. One of the solutions supporting savings is the recovery of water from wastewater, including backwash water obtained while rinsing the filter bed. The study objective was the qualitative and quantitative assessment of post-coagulation sludges, the main pollutant found in the washings. During the analyses, assessment of the sedimentation capabilities of the sludges was performed (gravitationally), particle size distribution was assessed (particle size distribution analyser) and assessment of phytotoxicity with the use of plant indicators in short-term tests was performed (Lemna minor, Lepidium sativum, Sinapis alba, Raphanus sativus). The samples were collected from two independent circulations, which differed in terms of capacity and type of coagulant used. The tested post-coagulation sludges were characterized by high content...
W pracy przedstawiono możliwość wykorzystania membranowego procesu ultrafiltracji do oczyszczania... more W pracy przedstawiono możliwość wykorzystania membranowego procesu ultrafiltracji do oczyszczania popłuczyn z instalacji basenowych. Badania obejmowały proces jednostkowy ultrafiltracji oraz zintegrowany układ napowietrzanie-ultrafiltracja, który pozwolił na częściowe usunięcie zanieczyszczeń wy-stępujących w nadawie. Porównano membrany o zróżnicowanym materiale polimerowym oraz różnej wartości granicznej masy molowej cut-off. Określono wpływ zastosowanego procesu wstępnego na zdolności transportowo-separacyjne membran o różnych własnościach fizyczno-chemicznych. Uzyska-no wysoką wydajność hydrauliczną we wszystkich prowadzonych filtracjach (w zakresie od 1,23·10-5 do 1,40·10-7 m 3 /m 2 ·s). W zakresie usuwania mętności badane układy charakteryzowały się współczynnikiem usunięcia przekraczającym 90%. Odnotowano znaczące usunięcie grupy zanieczyszczeń opisanych przez wskaźnik ogólny, tj. absorbancję w nadfiolecie UV 254. Przeprowadzone badania wykazały możliwość wykorzystania ultrafiltracji do odzysku wody basenowej z popłuczyn poprocesowych.
Proceedings of 5th International Electronic Conference on Water Sciences, 2020
The presented research focused on the possibility of reusing washings from rising filters for the... more The presented research focused on the possibility of reusing washings from rising filters for the maintenance of greenery. For this purpose, a physicochemical assessment of the washings was carried out, the washings were subjected to a preliminary treatment-dechlorination and sedimentation. Then, washings solutions (5-100%) were prepared in water matrices: deionized water, tap water, and rainwater, and selected physicochemical parameters were checked again. The ecotoxicological assessment was performed with the use of selected plant indicators: Lemna minor, Sinapis alba, Lepidium sativum. The stimulating effect of the addition of washings on the germination of S. alba and L. sativum was observed. This phenomenon depended on the water matrix in which the washings were dissolved and on the concentration of the washings. Moreover, L. minor was an organism with a higher sensitivity to the ingredients contained in the washings. It should be noted that the physicochemical quality of the washings was subject to changes during the study, which had a major impact on the results of the phytotoxicological assessment.
Environment Protection Engineering, 2018
The possibility of using the process of coagulation for purifying the filter backwash water from ... more The possibility of using the process of coagulation for purifying the filter backwash water from a swimming pool water system has been presented. The assessment of the process efficiency based on the physicochemical parameters was extended by a phytotoxicity analysis of products (sludges and supernatant liquids) obtained from the coagulation processes. The phytotoxicity of sludges was examined with respect to garden cress (Lepidium sativum) and white mustard (Sinapis alba), while duckweed (Lemna minor) was used for studying liquids. Coagulation process was highly effective in purifying backwash water when the lowest of the studied aluminum coagulant doses (from 7 to 20 mg/dm 3) was used. Moreover, the phytotoxicity assessment of backwash water allowed the determination of the hazard toward plants, which would be posed by using the backwash water for plant irrigation. The high stimulation of the growth of plant indices, observed in samples with raw backwash water, was caused by nutritive nitrogen and phosphorus. Their removal, in the case of postcoagulation solutions, significantly contributed to the inhibition of plant growth. In turn, sludges derived from both raw washings and coagulation exhibited phytotoxicity.
SN Applied Sciences, 2019
This study presents the possible application of membrane nanofiltration for purifying swimming po... more This study presents the possible application of membrane nanofiltration for purifying swimming pool water by removing compounds from human body secretions. The effect of the matrix (swimming pool, demineralized, tap water) on the analyzed pollutants was evaluated. We used asymmetric flat membranes (polyamide-thin film composite) in a dead-end filtration system. The effect of the matrix on the transport properties of the membranes was noticeable. A maximum reduction in value of permeate flux was obtained for 15.6 μL fluid analog solution/L of pool water. For all the analyzed matrices, a distinct reduction in the value of relative permeate flux was obtained along with an increase in the content of the investigated compounds in the feed. There was a marked increase in the separation properties along with an increase in the pollutants. The average value of the retention coefficient for total organic carbon was 87.21% and 79.67% for the concentrations of 3.90 and 15.60 μL fluid analog solution/L of pool water, respectively. This study provides evidence that further research into highly effective solutions for purifying pool water would be beneficial.
Membranes, 2019
Swimming pool water was treated using an ultrafiltration process using ceramic and polymer membra... more Swimming pool water was treated using an ultrafiltration process using ceramic and polymer membranes for comparison. It was determined that the efficiency of the process depended on the type of membrane used. The polymer membrane decreased the absorbance and concentration of combined chlorine in the pool water to a greater extent than the ceramic membrane. In the case of a ceramic membrane, the concentration of combined chlorine in the permeate exceeded the limit values. During the ultrafiltration process, the permeate flux decreased, causing the blockage of membrane pores. The extent of this phenomenon was similar for both tested membranes. In the case of the ceramic membrane, flushing it with water could significantly restore its initial performance. For both tested membranes, a high regeneration efficiency was observed during chemical treatment with an alkaline solution. SEM photos of the polymer membrane showed low resistance of this polymer to the chlorine present in the swimmi...
Folia Biologica et Oecologica, 2015
This review discusses the importance of ecotones with high plant diversity which are highly effec... more This review discusses the importance of ecotones with high plant diversity which are highly effective in retaining pollutants and waste. Biogeochemical barriers play a vital role in eliminating biogenic pollutants, pesticides and heavy metals. Belts of rush plants and meadow vegetation considerably expand the accumulation capacity of water bodies and watercourses. The mechanisms responsible for the protective role of biogeochemical barriers involve various processes such as sorption, sedimentation, denitrification and assimilation, which require the coexistence of plants and microorganisms in aquatic ecosystems. Buffer barriers were presented as one of the ecohydrology tools in agricultural landscapes.
E3S Web of Conferences, 2017
The paper presents the possibility of using an in-line mode flocculation-ultrafiltration system f... more The paper presents the possibility of using an in-line mode flocculation-ultrafiltration system for the purification of backwash water from flushing the beds of pressure filters used in the indoor swimming pool water treatment circulation. The effect of flocculation operational conditions (the flocculant dose in the range from 16 to 240 mg/dm 3 and the process temperature of 8-30°C) on the transport-separation properties of ultrafiltration membranes has been examined. To establish the effectiveness of the conducted processes, the contaminant retention coefficients, among others, were determined (based on the measurements of turbidity and UV254 ultraviolet absorbance). A significant influence of the flocculation process operational parameters on the performance of ultrafiltration was noted. With increasing flocculant dose, the efficiency of contaminant removal in the ultrafiltration process increased simultaneously. Moreover, the change in the temperature conditions of the flocculation process had a fundamental effect on the transport properties of the ultrafiltration membranes. The most advantageous temperature for conducting the processes was considered to be 21°C. Under those conditions, all flocculant doses contributed to a significant improvement in the transport properties of the ultrafiltration membranes. High values of the contamination retention coefficients and the permeate volumetric flux were obtained already at a flocculant dose of 80,160 and 240 mg/dm 3 .
Journal of Civil Engineering, Environment and Architecture, 2016
W pracy przedstawiono wyniki analiz fizykochemicznych oraz ocenę toksykologiczną wody z sześciu o... more W pracy przedstawiono wyniki analiz fizykochemicznych oraz ocenę toksykologiczną wody z sześciu obiegów basenowych. Podstawową różnicą w zastosowanych technologiach wody obiegowej jest sposób jej filtracji. Do oceny jakościowej wybrano filtry ciśnieniowe o wypełnieniu piaskowo-antracytowy oraz z Aktywnego Szkła Filtracyjnego AFM ® , a także filtr podciśnieniowy z ziemią okrzemkową. Ponadto obiekty badań charakteryzowały się zróżnicowanym przeznaczeniem niecek basenowych. Ocenę toksykologiczną przeprowadzono w oparciu o test inhibicji bioluminescencji bakterii-Microtox ® oraz biotest przeżywalności skorupiaków Daphnia magna. Analiza fizykochemiczna próbek wody basenowej wskazuje na duże zróżnicowanie jej jakości. W większości punktów poboru próbek wody stwierdzono stężenia chloru wolnego i związanego przekraczające wartości dopuszczalne, określone w DIN 19643 oraz rozporządzeniu Ministra Zdrowia. Wyniki przeprowadzonych biotestów wskazują na wysoką toksyczność wody basenowej w stosunku do organizmów testowych. Wrażliwość użytych organizmów wskaźnikowych na związki występujące w badanych próbkach była zbliżona. Wsparcie analizy fizykochemicznej przy pomocy narzędzi toksykologicznych umożliwia pełniejszy opis jakości wody basenowej. Przedstawione wyniki badań pokazują, że zachowanie odpowiedniej jakości wody basenowej, zgodnej z rygorystycznymi wymaganiami w tym zakresie stanowi duże wyzwanie dla wielu zarządców obiektów basenowych. Szczególnie wyraźnym problemem jest przekraczanie norm chloramin.
Inżynieria Ekologiczna, 2016
Journal of Ecological Engineering, 2018
New priorities for the environment have resulted in a reassessment of modern technology for treat... more New priorities for the environment have resulted in a reassessment of modern technology for treatment of urban wastewater. Urban wastewater treatment mainly involves the elimination or reduction of anthropogenic organic micropollutants in the aquatic environment. In this paper, the effectiveness of bisphenol A elimination from wastewater, after biological treatment, through a complex ultrafiltration/reverse osmosis purification process was evaluated. The effectiveness of the wastewater treatment process in the tested system was also evaluated with a number of other physical and chemical analyses for pH, turbidity, colour, absorbance, TOC, phenol index, conductivity and the concentration of selected heavy metals. Within this study, the change in the hydraulic performance of the membranes was also investigated. The effectiveness of the reduction of bisphenol A concentrations during the process of ultrafiltration was small, due to the significant difference between the size of the pores of the membrane and the size of eliminated micropollutants. In the process of reverse osmosis, the wastewater treatment system reported that the concentration of bisphenol A was reduced by 68%. In the tested treatment system, the ultrafiltration/reverse osmosis completely removed colour, lead and chromium. Other contaminants were eliminated by more than 31%. In both membrane processes, there was evidence that the membrane pores were blocked, but this occurred to a greater extent during the process of reverse osmosis.
Gaz, Woda i Technika Sanitarna, May 16, 2018
Inżynieria Ekologiczna, Aug 1, 2017
3 Talmex sp. z o.o. Chopina 94, 43-600 Jaworzno STRESZCZENIE Odpływ z oczyszczalni ścieków komuna... more 3 Talmex sp. z o.o. Chopina 94, 43-600 Jaworzno STRESZCZENIE Odpływ z oczyszczalni ścieków komunalnych poddano porównawczo oczyszczaniu w procesie ultrafiltracji z wykorzystaniem membrany ceramicznej i polimerowej. Filtrację prowadzono w systemie cross-flow w warunkach ciśnienia transmembranowego procesu 0,1 MPa-membrana ceramiczna i 0,2 MPa-membrana polimerowa oraz w temperaturze 20°C. Skuteczność procesu oceniono wykonując różne analizy fizyko-chemiczne (m.in. pH, mętność, barwa, absorbancja, OWO i indeks fenolowy). Włączono również ocenę toksykologiczną (stosując jako organizm wskaźnikowy bakterie bioluminescencyjne Aliivibrio fischeri) oraz mikrobiologiczną badanych próbek wodnych. Podczas filtracji badano wydajność hydrauliczną membran. Określono, że skuteczność procesu zależy od warunków prowadzenia filtracji membranowej, przy czym lepsze efekty usunięcia zanieczyszczeń organicznych odnotowano w przypadku membrany polimerowej niż ceramicznej. Jednak membrana polimerowa w porównaniu do membrany ceramicznej była bardziej podatna na zjawisko blokowania porów powodujące obniżenie wydajności hydraulicznej. Bez względu na rodzaj membrany permeaty nie były toksyczne jak i nie zawierały mikroorganizmów.
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Ecological Chemistry and Engineering S, 2020
The possibility of applying a colloidal solution of nanosilver in the closed circuit of pool wate... more The possibility of applying a colloidal solution of nanosilver in the closed circuit of pool water treatment as a complementary disinfectant with chlorine compounds was presented. The applied nanosilver solution is characterized, by hygienic certificate, as having a very high biocidal effect. Samples of pool water for the control were taken from 5 points of a pool circuit. The safety of the water was appraised by comparing the bacteriological and physicochemical test results with the admissible values specified by hygienic requirements. The results show that nanosilver solution can be successfully applied for precoating the filter bed and supporting the disinfection system. Special attention was paid to the bacteriological purity and stability of the disinfectant concentration. The influence of concentration of colloidal nanosilver (0-25 mg/dm3) on bacterial bioluminescence, crustacean mortality and macroscopic effect of root growth and seed germination of selected plants was analys...
E3S Web of Conferences, 2018
Recent reports in the literature relate to the identification of various substances in the pool w... more Recent reports in the literature relate to the identification of various substances in the pool water, including low-molecular weight pharmaceuticals that can react with chlorine residues contributing to the formation of a large group of irritant and toxic compounds. These substances are not covered by standard monitoring. As part of this work, the authors present information on the methods for assessing the quality of the swimming pool water. Common processes used in swimming pool water treatment systems were described. Previous experience of the authors in the use of a detailed assessment of the quality of the swimming pool water on the basis of toxicity tests was presented. The authors have researched the application of pressure driven membrane filtration for the improvement of the efficiency of the swimming pool water treatment.
GAZ, WODA I TECHNIKA SANITARNA, 2016
Environmental Monitoring and Assessment, 2020
Recommendations regarding disinfection by-products (DBPs) in pool waters consider the content of ... more Recommendations regarding disinfection by-products (DBPs) in pool waters consider the content of trihalomethanes (THMs) and combined chlorine (CC) as indicators of DBPs based on which the health risk for swimmers and staff of pool facility can be determined. However, the content of DBPs in swimming pools depends on many factors. In this paper, the influence of selected factors (physicochemical parameters of water and technological parameters) on the content of THMs and CC in pool water was determined. During the 6-month period, 9 pools of various functions were analyzed. The water in pools was subjected to the same method of treatment. The content of THMs and CC was compared against the content of organic matter, free chlorine and nitrates, pH, temperature, redox potential and turbidity, technological, and operational parameters. The THM content did not exceed the limit value of 0.1 mg/L. The content of CC varied significantly, from 0.05 to 1.13 mg Cl2/L. It was found that a very la...
Sustainability
Swimming pools are examples of water-intensive facilities, where solutions for reducing economic ... more Swimming pools are examples of water-intensive facilities, where solutions for reducing economic and environmental costs are searched with increased frequency. One of the solutions supporting savings is the recovery of water from wastewater, including backwash water obtained while rinsing the filter bed. The study objective was the qualitative and quantitative assessment of post-coagulation sludges, the main pollutant found in the washings. During the analyses, assessment of the sedimentation capabilities of the sludges was performed (gravitationally), particle size distribution was assessed (particle size distribution analyser) and assessment of phytotoxicity with the use of plant indicators in short-term tests was performed (Lemna minor, Lepidium sativum, Sinapis alba, Raphanus sativus). The samples were collected from two independent circulations, which differed in terms of capacity and type of coagulant used. The tested post-coagulation sludges were characterized by high content...
W pracy przedstawiono możliwość wykorzystania membranowego procesu ultrafiltracji do oczyszczania... more W pracy przedstawiono możliwość wykorzystania membranowego procesu ultrafiltracji do oczyszczania popłuczyn z instalacji basenowych. Badania obejmowały proces jednostkowy ultrafiltracji oraz zintegrowany układ napowietrzanie-ultrafiltracja, który pozwolił na częściowe usunięcie zanieczyszczeń wy-stępujących w nadawie. Porównano membrany o zróżnicowanym materiale polimerowym oraz różnej wartości granicznej masy molowej cut-off. Określono wpływ zastosowanego procesu wstępnego na zdolności transportowo-separacyjne membran o różnych własnościach fizyczno-chemicznych. Uzyska-no wysoką wydajność hydrauliczną we wszystkich prowadzonych filtracjach (w zakresie od 1,23·10-5 do 1,40·10-7 m 3 /m 2 ·s). W zakresie usuwania mętności badane układy charakteryzowały się współczynnikiem usunięcia przekraczającym 90%. Odnotowano znaczące usunięcie grupy zanieczyszczeń opisanych przez wskaźnik ogólny, tj. absorbancję w nadfiolecie UV 254. Przeprowadzone badania wykazały możliwość wykorzystania ultrafiltracji do odzysku wody basenowej z popłuczyn poprocesowych.
Proceedings of 5th International Electronic Conference on Water Sciences, 2020
The presented research focused on the possibility of reusing washings from rising filters for the... more The presented research focused on the possibility of reusing washings from rising filters for the maintenance of greenery. For this purpose, a physicochemical assessment of the washings was carried out, the washings were subjected to a preliminary treatment-dechlorination and sedimentation. Then, washings solutions (5-100%) were prepared in water matrices: deionized water, tap water, and rainwater, and selected physicochemical parameters were checked again. The ecotoxicological assessment was performed with the use of selected plant indicators: Lemna minor, Sinapis alba, Lepidium sativum. The stimulating effect of the addition of washings on the germination of S. alba and L. sativum was observed. This phenomenon depended on the water matrix in which the washings were dissolved and on the concentration of the washings. Moreover, L. minor was an organism with a higher sensitivity to the ingredients contained in the washings. It should be noted that the physicochemical quality of the washings was subject to changes during the study, which had a major impact on the results of the phytotoxicological assessment.
Environment Protection Engineering, 2018
The possibility of using the process of coagulation for purifying the filter backwash water from ... more The possibility of using the process of coagulation for purifying the filter backwash water from a swimming pool water system has been presented. The assessment of the process efficiency based on the physicochemical parameters was extended by a phytotoxicity analysis of products (sludges and supernatant liquids) obtained from the coagulation processes. The phytotoxicity of sludges was examined with respect to garden cress (Lepidium sativum) and white mustard (Sinapis alba), while duckweed (Lemna minor) was used for studying liquids. Coagulation process was highly effective in purifying backwash water when the lowest of the studied aluminum coagulant doses (from 7 to 20 mg/dm 3) was used. Moreover, the phytotoxicity assessment of backwash water allowed the determination of the hazard toward plants, which would be posed by using the backwash water for plant irrigation. The high stimulation of the growth of plant indices, observed in samples with raw backwash water, was caused by nutritive nitrogen and phosphorus. Their removal, in the case of postcoagulation solutions, significantly contributed to the inhibition of plant growth. In turn, sludges derived from both raw washings and coagulation exhibited phytotoxicity.
SN Applied Sciences, 2019
This study presents the possible application of membrane nanofiltration for purifying swimming po... more This study presents the possible application of membrane nanofiltration for purifying swimming pool water by removing compounds from human body secretions. The effect of the matrix (swimming pool, demineralized, tap water) on the analyzed pollutants was evaluated. We used asymmetric flat membranes (polyamide-thin film composite) in a dead-end filtration system. The effect of the matrix on the transport properties of the membranes was noticeable. A maximum reduction in value of permeate flux was obtained for 15.6 μL fluid analog solution/L of pool water. For all the analyzed matrices, a distinct reduction in the value of relative permeate flux was obtained along with an increase in the content of the investigated compounds in the feed. There was a marked increase in the separation properties along with an increase in the pollutants. The average value of the retention coefficient for total organic carbon was 87.21% and 79.67% for the concentrations of 3.90 and 15.60 μL fluid analog solution/L of pool water, respectively. This study provides evidence that further research into highly effective solutions for purifying pool water would be beneficial.
Membranes, 2019
Swimming pool water was treated using an ultrafiltration process using ceramic and polymer membra... more Swimming pool water was treated using an ultrafiltration process using ceramic and polymer membranes for comparison. It was determined that the efficiency of the process depended on the type of membrane used. The polymer membrane decreased the absorbance and concentration of combined chlorine in the pool water to a greater extent than the ceramic membrane. In the case of a ceramic membrane, the concentration of combined chlorine in the permeate exceeded the limit values. During the ultrafiltration process, the permeate flux decreased, causing the blockage of membrane pores. The extent of this phenomenon was similar for both tested membranes. In the case of the ceramic membrane, flushing it with water could significantly restore its initial performance. For both tested membranes, a high regeneration efficiency was observed during chemical treatment with an alkaline solution. SEM photos of the polymer membrane showed low resistance of this polymer to the chlorine present in the swimmi...
Folia Biologica et Oecologica, 2015
This review discusses the importance of ecotones with high plant diversity which are highly effec... more This review discusses the importance of ecotones with high plant diversity which are highly effective in retaining pollutants and waste. Biogeochemical barriers play a vital role in eliminating biogenic pollutants, pesticides and heavy metals. Belts of rush plants and meadow vegetation considerably expand the accumulation capacity of water bodies and watercourses. The mechanisms responsible for the protective role of biogeochemical barriers involve various processes such as sorption, sedimentation, denitrification and assimilation, which require the coexistence of plants and microorganisms in aquatic ecosystems. Buffer barriers were presented as one of the ecohydrology tools in agricultural landscapes.
E3S Web of Conferences, 2017
The paper presents the possibility of using an in-line mode flocculation-ultrafiltration system f... more The paper presents the possibility of using an in-line mode flocculation-ultrafiltration system for the purification of backwash water from flushing the beds of pressure filters used in the indoor swimming pool water treatment circulation. The effect of flocculation operational conditions (the flocculant dose in the range from 16 to 240 mg/dm 3 and the process temperature of 8-30°C) on the transport-separation properties of ultrafiltration membranes has been examined. To establish the effectiveness of the conducted processes, the contaminant retention coefficients, among others, were determined (based on the measurements of turbidity and UV254 ultraviolet absorbance). A significant influence of the flocculation process operational parameters on the performance of ultrafiltration was noted. With increasing flocculant dose, the efficiency of contaminant removal in the ultrafiltration process increased simultaneously. Moreover, the change in the temperature conditions of the flocculation process had a fundamental effect on the transport properties of the ultrafiltration membranes. The most advantageous temperature for conducting the processes was considered to be 21°C. Under those conditions, all flocculant doses contributed to a significant improvement in the transport properties of the ultrafiltration membranes. High values of the contamination retention coefficients and the permeate volumetric flux were obtained already at a flocculant dose of 80,160 and 240 mg/dm 3 .
Journal of Civil Engineering, Environment and Architecture, 2016
W pracy przedstawiono wyniki analiz fizykochemicznych oraz ocenę toksykologiczną wody z sześciu o... more W pracy przedstawiono wyniki analiz fizykochemicznych oraz ocenę toksykologiczną wody z sześciu obiegów basenowych. Podstawową różnicą w zastosowanych technologiach wody obiegowej jest sposób jej filtracji. Do oceny jakościowej wybrano filtry ciśnieniowe o wypełnieniu piaskowo-antracytowy oraz z Aktywnego Szkła Filtracyjnego AFM ® , a także filtr podciśnieniowy z ziemią okrzemkową. Ponadto obiekty badań charakteryzowały się zróżnicowanym przeznaczeniem niecek basenowych. Ocenę toksykologiczną przeprowadzono w oparciu o test inhibicji bioluminescencji bakterii-Microtox ® oraz biotest przeżywalności skorupiaków Daphnia magna. Analiza fizykochemiczna próbek wody basenowej wskazuje na duże zróżnicowanie jej jakości. W większości punktów poboru próbek wody stwierdzono stężenia chloru wolnego i związanego przekraczające wartości dopuszczalne, określone w DIN 19643 oraz rozporządzeniu Ministra Zdrowia. Wyniki przeprowadzonych biotestów wskazują na wysoką toksyczność wody basenowej w stosunku do organizmów testowych. Wrażliwość użytych organizmów wskaźnikowych na związki występujące w badanych próbkach była zbliżona. Wsparcie analizy fizykochemicznej przy pomocy narzędzi toksykologicznych umożliwia pełniejszy opis jakości wody basenowej. Przedstawione wyniki badań pokazują, że zachowanie odpowiedniej jakości wody basenowej, zgodnej z rygorystycznymi wymaganiami w tym zakresie stanowi duże wyzwanie dla wielu zarządców obiektów basenowych. Szczególnie wyraźnym problemem jest przekraczanie norm chloramin.
Inżynieria Ekologiczna, 2016
Celem badań podjętych w ramach niniejszej pracy było dokonanie charakterystyki jakości wody basen... more Celem badań podjętych w ramach niniejszej pracy było dokonanie charakterystyki jakości wody basenowej pod względem zmiany jej toksyczności w zależności od obciążenia niecki basenowej osobami kąpiącymi się oraz głębokości poboru próbki wody. Udokumentowano zmiany zawartości chloru wolnego i związanego w czasie poboru próbek.
The paper presents the usefulness of biotests in the preliminary assessment of the quality of wat... more The paper presents the usefulness of biotests in the preliminary assessment of the quality of water taken at selected points of swimming pool circulations. Swimming pool water is treated water circulating in a technological cycle located within the facility, replenished on a regular basis from the water-pipe network. During bathing, contaminants in the form of human metabolism products are introduced into the water, which upon coming into contact with disinfectants form a numerous group of compounds called disinfection by-products. These compounds may have a toxic effect on the human body, and part of them have been found to show mutagenic or carcinogenic properties.
Nowe możliwości w zakresie badania jakości wód basenowych The new opportunities for study a quali... more Nowe możliwości w zakresie badania jakości wód basenowych The new opportunities for study a quality of swimming pools waters Słowa klucze: wody basenowe, testy toksyczności, biotesty, uboczne produkty dezynfekcji Sport i rekreacja powinna stanowić ważny element życia człowieka od najmłodszych lat. Jedną z częściej zalecanych aktywności fizycznych jest pływanie. Pełne i bezpieczne korzystanie z pływalni i kąpielisk może być zapewnione tylko przy zachowaniu wysokich standardów jakości wody basenowej. Osiągnięcie tego celu jest możliwe przy ograniczeniu rozwoju chorobotwórczych mikroorganizmów, które pojawiają sie w basenach w trakcie ich użytkowania. Dlatego dezynfekcja chemiczna jest niezbędnym krokiem w procesie uzdatniania wody basenowej. Woda basenowa tworzy specyficzny układ obejmujący nie tylko wodę w jej czystej postaci, ale również pozostałości środków do dezynfekcji oraz zanieczyszczeń wprowadzanych przez kąpiących się. Obecność moczu, potu, włosów oraz pozostałości kosmetyków w znaczący sposób przyczynia się do powstawania prekursorów ubocznych produktów dezynfekcji. Mocznik, aminokwasy, kreatynina, kwas cytrynowy czy liczne parabeny reagując ze związkami chloru tworzą szeroką grupę związków zwanych ubocznymi produktami dezynfekcji (DBP). DBP mają negatywny wpływ na zdrowie osób korzystających z basenu, a wielu z nich przypisuje się nie tylko właściwości toksyczne, ale również mutagenne i rakotwórcze. Postęp analizy instrumentalnej w znaczącym stopniu przyczynił się do identyfikacji większości z nich, jednak ich działanie na organizmy żywe wciąż jest przedmiotem licznych badań. Obok analizy instrumentalnej swoją obecność coraz mocniej zaznaczają metody toksykologiczne oparte o testy na żywych organizmach-bakteryjnych, zwierzęcych czy roślinnych. Możliwość wyboru z pośród dużej liczby organizmów testowych oraz dostosowania metodyki do potrzeb własnej pracy badawczej stanowi o atrakcyjności tych metod. Zastosowanie ich jako przesiewowych metod oceny jakości wód basenowych może stanowić ciekawą i skuteczną metodę wspomagania klasycznej analizy fizykochemicznej. W niniejszej pracy przedstawiono przegląd testów toksykologicznych na różnym poziomie organizacji organizmów testowych. Oceniono przede wszystkim ich użyteczność w ocenie jakości wód basenowych, a także zaprezentowano własne spostrzeżenia i wnioski w zakresie oceny toksykologicznej jakości wód basenowych prowadzonej przez autorów w ramach wstępnych prac badawczych.
W pracy przedstawiono możliwość wykorzystania testu fitotoksyczności Lemna spp., jako narzędzia w... more W pracy przedstawiono możliwość wykorzystania testu fitotoksyczności Lemna spp., jako narzędzia wspomagającego ocenę jakości toksykologicznej wód basenowych. Na podstawie długości i liczebności korzeni oraz frondów scharakteryzowano zdolności wzrostowe Lemna minor w obecności próbek wody pochodzącej z różnych punktów obiegu basenu krytego i odkrytego.
Konferencja naukowa "Mikrobiologia w medycynie, przemyśle i ochronie środowiska": 24-25.10.2015 r
Poster zaprezentowany podczas Konferencji "Badania nad środowiskiem wyzwaniem dla młodych naukowc... more Poster zaprezentowany podczas Konferencji "Badania nad środowiskiem wyzwaniem dla młodych naukowców", dnia 23 maja 2015 roku.