Concentrations of PCBs and heavy metals in water of the dam reservoir and use of pre-hydrolyzed coagulants to micropollutants removal from surface water

Rosińska, Agata; Dąbrowska, Lidia

doi:10.1080/19443994.2012.695045

Cited by 7 publications

(7 citation statements)

References 18 publications

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“…(2014) [1][2][3][4][5][6][7] www.deswater.com doi: 10.1080/19443994.2014.982957 control reservoirs (10.0%) or for recreation (5.3%). Most issues concern the use of reservoir water for drinking, as most of surface water is polluted to some degree.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…Most issues concern the use of reservoir water for drinking, as most of surface water is polluted to some degree. River water flowing into reservoirs contains municipal [3], agricultural [4] or industrial contaminants [5]; most frequently, these are mixed contaminants coming from multiple sources [6,7]. Additionally, many reservoirs are exposed to eutrophication processes [8][9][10].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

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Water treatment in a natural mountain catchment (Wapienica dam reservoir, southern Poland)

Jaguś

2014

Desalination and Water Treatment

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A B S T R A C TThe paper deals with water quality of Wapienica dam reservoir and the treatment of its water for consumption. The reservoir is located in a mountain catchment, where human activities are restricted to sustainable forest management. The reservoir was constructed between 1928 and 1932 as a reservoir of potable water for the city of Bielsko-Biala. In years 2011-2012, analyses of water quality were carried out for raw water in the reservoir and treated water which was pumped into the water supply network. The paper also shows Polish legal regulations which set conditions for the treatment of water and use of water for consumption. The research showed that water retained in the reservoir has good quality, and its treatment can only be based on filtration and disinfection. Only in conditions of excessive turbidity should a process of coagulation be used. Treated water meets the criteria which are set for potable water. It has low concentration of macroelements and trace elements. The research showed benefits coming from location of reservoirs in natural catchments, which are not managed by man. Water which is taken from such reservoirs does not need costly treatment processes.

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Section: Desalination and Water Treatmentmentioning

confidence: 99%

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Water treatment in a natural mountain catchment (Wapienica dam reservoir, southern Poland)

Jaguś

2014

Desalination and Water Treatment

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“…Then 0.7 dm 3 of water was decanted. Before and after the coagulation process, water analysis was performed, including determination of: pH, turbidity, colour, total organic carbon (TOC), and PCB analysis [12].…”

Section: Coagulation Processmentioning

confidence: 99%

“…Research conducted in 2009-2011 for chosen water reservoir in Poland, which is the source of water for water treatment plant, showed that the water and the bottom sediments are contaminated with PCB [12]. The scope of PCB concentration in the reservoir water ranged from 1.0 to 8.1 ng/dm 3 , whereas the concentration of these compounds in the bottom sediments ranged from 0.12 to 2.78 µg/kg.…”

Section: Introductionmentioning

confidence: 99%

Influence of Selected Coagulants of Indicator and Dioxin-Like PCB Removal from Drinking Water

Rosińska

2017

Ecological Chemistry and Engineering S

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Abstract:The aim of the research was to compare selected coagulants efficiency in indicator and chosen dioxinlike PCB removal from surface water. As coagulants, there were used aluminium sulfate and 5 hydrolyzed polyaluminium chlorides, with trade names: PAX-XL1, PAX-XL10, PAX-XL19, PAX-XL60, PAX-XL69. For the research, surface water was used, collected from dam reservoir. The water composition was modified with standard mixtures PCB MIX24 and MIX13, in order to obtain concentration of each congener equal to 300 ng/dm 3 . The PCB MIX24 mixture was composed of indicator congeners solution: 28, 52, 101, 118, 138, 153, and 180, whereas the MIX13 mixture -solution of three dioxin-like PCB 77, PCB 126, and PCB 169. It was demonstrated that the application of aluminium sulfate allowed for reaching better effects for purifying water of PCB, than with the usage of pre-hydrolyzed salts, polyaluminium chlorides. Out of the studied coagulants, the best effects for indicator PCB removal were obtained with the application of aluminium sulfate, total PCB concentration was decreased by 65%. The highest efficiency for indicator congeners removal (90%) was obtained for PCB 138 and 153. After the application of hydrolyzed polyaluminium chlorides PAX-XL1, PAX-XL10 decrease in higher chlorinated PCB concentration was obtained, in the range of 23 to 74%. Selectivity of chosen PCB congener removal, depending on applied coagulant, was demonstrated; with the usage of aluminium sulfate, removal of heptachlorobiphenyl PCB 180 at the level of 34% was obtained, whereas with the application of PAX-XL1 and PAX-XL10 higher reduction efficiency for this congener was obtained, i.e. 83 and 74% respectively. For dioxin-like PCB, after application of aluminium sulfate, total concentration reduction by 74% was obtained, efficiency of this congeners removal amounted to from 54 (PCB 77) up to 72% (PCB 126), similar results were obtained after the usage of PAX-XL1. The lowest PCB removal from water rate was stated for coagulants PAX-XL60 and PAX-XL69.

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“…Where results are available, these indicate a need for process parameters to be selected separately for each type of substance. Furthermore, a key aspect of any process to achieve the oxidation of organic contaminants is the possibility that intermediate products (including some more toxic than the parent) may be formed [2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Application of an ultrasonic field for the removal of selected pesticides

2018

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Abstract. The work detailed in this study investigated the efficiency of oxidizing technologie for the removal of organochlorine pesticides (OCPs) from aqueous solutions. OCPs constitute an important group of environmental pollutants also known to be endocrine-disrupting compounds (EDCs). The particular focus has been on a process achieving oxidation through the use of ultrasonic waves, with the impacts of pH, time on TOC and pesticide removal all being tested. Results confirm effective TOC decomposition using ultrasonic waves, albeit with reaction time showing a significant impact on results. Furthermore, results for TOC were not found to reflect those relating to the removal of individual substances from the tested mixture. Chromatographic analysis of reaction mixtures was therefore carried out after the selected processes had been applied, and an attempt to identify and characterize degradation products of the pesticides tested was also made. During the irradiation, the H 2 O 2 concentration arising was also monitored. The results indicate that H 2 O 2 is produced by cavitation during ultrasonic irradiation.

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Concentrations of PCBs and heavy metals in water of the dam reservoir and use of pre-hydrolyzed coagulants to micropollutants removal from surface water

Cited by 7 publications

References 18 publications

Water treatment in a natural mountain catchment (Wapienica dam reservoir, southern Poland)

Water treatment in a natural mountain catchment (Wapienica dam reservoir, southern Poland)

Influence of Selected Coagulants of Indicator and Dioxin-Like PCB Removal from Drinking Water

Application of an ultrasonic field for the removal of selected pesticides

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