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  1. Article ; Online: The effectiveness of organic matter removal in unit processes of the technological groundwater treatment system

    Pietrzyk Andżelika / Papciak Dorota

    E3S Web of Conferences, Vol 44, p

    2018  Volume 00142

    Abstract: The study evaluated the content of hydrophobic and hydrophilic organic substances in water subjected to purification in the technological system: coagulation, filtration on anthracite-sand deposits and biofiltration on granular activated carbons. The ... ...

    Abstract The study evaluated the content of hydrophobic and hydrophilic organic substances in water subjected to purification in the technological system: coagulation, filtration on anthracite-sand deposits and biofiltration on granular activated carbons. The estimation of the removal efficiency of individual NOM fractions was made on the basis of fractionation method using polymeric resins (DAX-8, XAD-4 and IRA-958). The obtained results allowed to state that the applied water treatment system is effective in removing organic matter and its effectiveness in relation to individual parameters was: 55% for total organic carbon (TOC), 49% for dissolved organic carbon (DOC), 80% for particulate organic carbon (POC), 68% for UV absorbance, 83% for permanganate value and 100% for colour. In the intaken groundwater, the value of the hydrophobic fraction was 84%. The dominant fraction was very hydrophobic acid (VHA), whose content was 4.87 mg C/L (65% DOC). On the grounds of the information on the content of the NOM fraction in the intaken waters, the effectiveness of their removal in the unit processes of the technological system cannot be unequivocally determined. The content of NOM fractions established on the basis of the fractionation procedure and the SUVA parameter does not give explicit results. Further research should be carried out in this respect.
    Keywords Environmental sciences ; GE1-350
    Subject code 550
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Removal of organic compounds from natural underground water in sorption and sono-sorption processes on selected activated carbons

    Pietrzyk Andżelika / Papciak Dorota

    E3S Web of Conferences, Vol 17, p

    2017  Volume 00074

    Abstract: The article rated removal efficiency of organic matter in the processes of sorption and sono-sorption of underground water grasped for municipal purposes. The studies were conducted in laboratory scale and verified in pilot scale at the Water Treatment ... ...

    Abstract The article rated removal efficiency of organic matter in the processes of sorption and sono-sorption of underground water grasped for municipal purposes. The studies were conducted in laboratory scale and verified in pilot scale at the Water Treatment Plant Tarnobrzeg-Jeziórko. In the research used granular activated carbons, ie. WD-Extra, WG-12, Norit Row 0.8 and Filtrasorb 300. The processes efficiency was evaluated on the basis of changes in the following parameters, ie.: total organic carbon (TOC), permanganate index, UV absorbance, turbidity and colour. The ultrasounds were generated by means of disintegrator Sonics&Materials VCX 130, using the sonication time of 1 and 5 minutes. The results obtained for the batch tests allowed to observe a beneficial effect of ultrasound on the efficiency of the removal of organic material in the sorption process. The combination of sonication and sorption on activated carbon increased the efficiency of the removal of organic matter by 6–37% for TOC, and 18.6–27.9% for permanganate index, depending on the sorbent used. The positive laboratory results were not confirmed in a pilot scale. In the flow conditions the sonication process did not affect the efficiency of removal of organic matter on the filter model with a bed of activated carbon.
    Keywords Environmental sciences ; GE1-350
    Subject code 660
    Language English
    Publishing date 2017-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article ; Online: Disinfection of rainwater as a way to their microbiological stability and safe use

    Zdeb Monika / Zamorska Justyna / Pietrzyk Andżelika

    E3S Web of Conferences, Vol 44, p

    2018  Volume 00199

    Abstract: Research on the microbiological quality of rainwater collected from roof surfaces indicates their significant contamination with microorganisms, including potentially pathogenic ones. The aim of the research was to attempt disinfection of rainwater with ... ...

    Abstract Research on the microbiological quality of rainwater collected from roof surfaces indicates their significant contamination with microorganisms, including potentially pathogenic ones. The aim of the research was to attempt disinfection of rainwater with chemical methods and to evaluate the effectiveness of this disinfection. The research was carried out with the use of appropriate means in the case of decontamination of large volumes of water, when it is important to maintain their biological stability - chlorination and ozonation. After the disinfector was administered for 4 weeks, bacterial microflora (stability) was observed in stored water. The control was carried out by determining the total amount of bacteria at 37°C and the total amount of bacteria at 22°C on the reference medium (agar A) and on the non-standard substrate (R2A agar). The number of indicator bacteria was also determined: fecal streptococci and Escherichia coli (on the chromogenic medium). Changes in the amount of microorganisms after disinfection processes were also monitored by flow cytometry. The research results clearly indicate better chlorinating disinfection effects. It allows the removal of indicator microorganisms in a relatively short time (1 hour), and the effect of the disinfectant lasts up to about a half month.
    Keywords Environmental sciences ; GE1-350
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Article ; Online: Approach to tap water safety analysis in terms of biostability

    Tchórzewska-Cieślak Barbara / Papciak Dorota / Pietrucha-Urbanik Katarzyna / Pietrzyk Andżelika

    E3S Web of Conferences, Vol 59, p

    2018  Volume 00005

    Abstract: The subject of the work is the analysis and assessment of the risk of biological instability of water. The lack of water stability causes the increased susceptibility of the distribution system to secondary microbial contamination of water and ... ...

    Abstract The subject of the work is the analysis and assessment of the risk of biological instability of water. The lack of water stability causes the increased susceptibility of the distribution system to secondary microbial contamination of water and constitutes a hazard for consumers’ health. The risk is expressed as the loss of water supply safety and distinguishes a failure of not meeting certain water quality parameters that can influence physico-chemical parameters and the bacteriological quality of the water supplied to the consumers. In the paper the method of analysing and evaluating the risk of loss of biostability of tap water is presented. The presented analysis was performed on the basis of the operating data from the water treatment plant.
    Keywords Environmental sciences ; GE1-350
    Language English
    Publishing date 2018-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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