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  1. Article ; Online: Impact of Uneven Flow Wastewater Distribution on the Technological Efficiency of a Sequencing Batch Reactor

    Adam Masłoń

    Sustainability, Vol 14, Iss 2405, p

    2022  Volume 2405

    Abstract: Variability in the load of pollutants significantly influences the efficiency of activated sludge technology in municipal wastewater treatment plants, both in terms of flow systems and in sequencing batch reactors (SBR). Diversified inflow of wastewater ... ...

    Abstract Variability in the load of pollutants significantly influences the efficiency of activated sludge technology in municipal wastewater treatment plants, both in terms of flow systems and in sequencing batch reactors (SBR). Diversified inflow of wastewater to the treatment plant has a significant impact on the technological efficiency of sequencing batch reactors. Additionally, this problem is intensified in technological systems in which there is no storage tank for raw wastewater. It is assumed, however, that the flexible operation of an SBR reactor allows it to be easily adapted to a variable load of pollutants. The aim of the article is to present the effects of uneven wastewater inflow on the operation of sequencing batch reactors using the example of the wastewater treatment plant in Rabka-Zdrój (Poland). The conducted research has shown that, in wastewater treatment plants, the use of sequencing batch reactors as an independent element of biological wastewater treatment does not always ensure a high degree of pollutant removal in the event of a very uneven wastewater inflow. Therefore, the use treated wastewater equalizing tanks is recommended, which can additionally clean residual contaminants from wastewater.
    Keywords sequencing batch reactor ; uneven flow wastewater ; removal pollutants ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 660
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Physicochemical Properties of Marl and Travertine and their Thermally Modified Forms in the Perspective of Phosphorus Removal from Wastewater

    Sylwia Gubernat / Joanna Czarnota / Adam Masłoń / Piotr Koszelnik

    Journal of Ecological Engineering, Vol 24, Iss 5, Pp 56-

    2023  Volume 65

    Abstract: The paper presents physicochemical studies of nine materials that are reactive materials for removing phosphorus from wastewater and water. The materials under analysis are raw forms of marl and travertine along with their thermally treated forms at ... ...

    Abstract The paper presents physicochemical studies of nine materials that are reactive materials for removing phosphorus from wastewater and water. The materials under analysis are raw forms of marl and travertine along with their thermally treated forms at temperatures of 500℃, 650℃, 700℃ (travertine), 700℃, 900℃, 1000℃ (marl) and the commercial material Polonite®. The scope of the research included morphological analysis and elemental composition, specific surface area, pore volume and diameter, losses on ignition and the amount of elements leached from materials. The results of the research allowed to assess the impact of physicochemical properties and thermal modification on the efficiency of phosphorus binding by these materials. All the tested sorbents show the highest calcium content among the elements with the ability to bind phosphorus. The size of the specific surface does not determine the efficiency of phosphorus retention by the tested materials, therefore it is advisable to study the mechanism of its binding. The thermal modification process, along with the increase in the treatment temperature, improves the regularity of marl and travertine structures, which also manifests itself in increasing the efficiency of phosphorus removal.
    Keywords phosphorus ; wastewater treatment ; adsorption ; green chemistry ; ecotechnology ; reactive materials ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350
    Subject code 660
    Language English
    Publishing date 2023-05-01T00:00:00Z
    Publisher Polish Society of Ecological Engineering (PTIE)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Wastewater Treatment Plants as a Source of Malodorous Substances Hazardous to Health, Including a Case Study from Poland

    Joanna Czarnota / Adam Masłoń / Rebeka Pajura

    International Journal of Environmental Research and Public Health, Vol 20, Iss 5379, p

    2023  Volume 5379

    Abstract: Using Poland as an example, it was shown that 41.6% of the requests for intervention in 2016–2021 by Environmental Protection Inspections were related to odour nuisance. Further analysis of the statistical data confirmed that approximately 5.4% of ... ...

    Abstract Using Poland as an example, it was shown that 41.6% of the requests for intervention in 2016–2021 by Environmental Protection Inspections were related to odour nuisance. Further analysis of the statistical data confirmed that approximately 5.4% of wastewater treatment plants in the group of municipal facilities were subject to complaints. Detailed identification of the subject of odour nuisance at wastewater treatment plants identified hydrogen sulphide (H 2 S), ammonia (NH 3 ) and volatile organic compounds (VOCs) as the most common malodorous substances within these facilities. Moreover, the concentrations of hydrogen sulphide and ammonia exceed the reference values for some substances in the air (0.02 mg/m 3 for H 2 S and 0.4 mg/m 3 for NH 3 ). A thorough assessment of the properties of these substances made it clear that even in small concentrations they have a negative impact on the human body and the environment, and their degree of nuisance is described as high. In the two WWTPs analysed in Poland (WWTP 1 and WWTP 2), hydrogen sulphide concentrations were in the range of 0–41.86 mg/m 3 (Long-Term Exposure Limit for H 2 S is 7.0 mg/m 3 ), ammonia 0–1.43 mg/m 3 and VOCs 0.60–134.79 ppm. The values recognised for H 2 S cause lacrimation, coughing, olfactory impairment, psychomotor agitation, and swelling of the cornea with photophobia. Recognition of the methods used in practice at WWTPs to reduce and control malodorous emissions indicates the possibility of protecting the environment and human health, but these solutions are ignored in most facilities due to the lack of requirements specified in legislation.
    Keywords hydrogen sulphide ; ammonia ; volatile organic compounds ; impact of odorous substances on humans and the environment ; odour nuisance of wastewater treatment plants ; Medicine ; R
    Subject code 333
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Biogranulation and Physical Properties of Aerobic Granules in Reactors at Low Organic Loading Rate and with Powdered Ceramsite Added

    Joanna Czarnota / Adam Masłoń

    Journal of Ecological Engineering, Vol 20, Iss 9, Pp 202-

    2019  Volume 210

    Abstract: In wastewater treatment, aerobic granular sludge (AGS) technology is a relatively new alternative to the activated sludge method. The biogranulation of biomass ensues when appropriate environmental conditions in a reactor are ensured, and one of the ... ...

    Abstract In wastewater treatment, aerobic granular sludge (AGS) technology is a relatively new alternative to the activated sludge method. The biogranulation of biomass ensues when appropriate environmental conditions in a reactor are ensured, and one of the factors determining this is the organic loading rate (OLR). As a literature review suggests, the optimal values of OLR for AGS technology are in the range of 2.50-7.50 g COD/(dm3∙d), the aim of the work detailed here was to evaluate the impact of powdered ceramsite on biogranulation in two Granular Sequencing Batch Reactors (GSBRs) in which OLR was equal to just 2.10 g COD/(dm3·d) (R1) and 1.0 g COD/(dm3·d) (R2). The research was carried out in laboratory scale with using synthetic wastewater containing different concentration of organic compounds. In the course of the research, a more intensive process of biogranulation was noted in reactor R1, and mean diameters of granules on the last day of experimentation were 962 and 274 µm for R1 and R2, respectively. While the organic loading rate equal to 2.10 g COD/(dm3·d) could allow granule formation, the results also pointed that lower food-to-microorganism (F/M) ratios favour biogranulation. This parameter was indirectly affected by the application of powdered ceramsite, because the powdered material improved the sludge sedimentation properties (average values of SVI30 being 30.1±12.8 and 36.9±10.9 cm3/g). The result of this was more-limited leaching of biomass from reactors (with average values for MLVSS at 4.37±1.23 and 3.03±0.67 g/dm3).
    Keywords aerobic granular sludge ; powdered ceramsite ; biogranulation ; organic loading rate ; Environmental technology. Sanitary engineering ; TD1-1066 ; Environmental sciences ; GE1-350
    Subject code 660
    Language English
    Publishing date 2019-10-01T00:00:00Z
    Publisher Polish Society of Ecological Engineering (PTIE)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Analysis of sewage sludge and biogas-energy management at the Opole wastewater treatment plant

    Paulina Szczyrba / Adam Masłoń / Joanna Czarnota / Kamil Olszewski

    Inżynieria Ekologiczna, Vol 21, Iss 2, Pp 26-

    2020  Volume 34

    Abstract: Increasing requirements of wastewater treatments and the development of wastewater treatment and sewage sludge systems cause a significant increase in the demand for electricity and heat. An alternative way to obtain cheap energy is to use biogas ... ...

    Abstract Increasing requirements of wastewater treatments and the development of wastewater treatment and sewage sludge systems cause a significant increase in the demand for electricity and heat. An alternative way to obtain cheap energy is to use biogas produced in the anaerobic digestion process from sewage sludge. The paper presents an analysis of sewage sludge and biogas-energy management at the wastewater treatment plant in Opole in the aspect of obtaining biogas and its use for electricity production. The biogas-energy system was functioning properly in 2017-2019. A total of 7.26 GWh of electricity was produced from biogas in two power generators, which allowed to cover nearly 35% of the demand for electricity.
    Keywords sewage sludge ; anaerobic digestion ; biogas ; energy consumption of wastewater treatment plant ; Environmental sciences ; GE1-350
    Language Polish
    Publishing date 2020-06-01T00:00:00Z
    Publisher Polish Society of Ecological Engineering (PTIE)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: The Impact of Different Powdered Mineral Materials on Selected Properties of Aerobic Granular Sludge

    Joanna Czarnota / Adam Masłoń / Monika Zdeb / Grzegorz Łagód

    Molecules, Vol 25, Iss 2, p

    2020  Volume 386

    Abstract: This study aimed to evaluate and compare the physical, chemical and biological properties of aerobic granular sludge from reactors with the addition of different powdered mineral materials. These properties have a significant impact on the efficiency of ... ...

    Abstract This study aimed to evaluate and compare the physical, chemical and biological properties of aerobic granular sludge from reactors with the addition of different powdered mineral materials. These properties have a significant impact on the efficiency of systems in which the biomass in granular form is used. Four identical granular sequencing batch reactors (GSBRs) were adopted for the research performed on a laboratory scale (R1—control reactor; R2, R3 and R4—with materials, PK, PG and PL respectively). The results indicate that the addition of powdered mineral materials improved the properties of biomass in reactors. The SVI 5 /SVI 30 ratio values were significantly lower in the reactors with added materials (approx. 1.3 ± 0.3). The mean values of the sludge volume index at 30 min were the lowest in the R2 (39.8 ± 8.6 mL/g) and R4 (32.8 ± 10.7 mL/g) reactors. The settling velocity of biomass was the highest in the R2 reactor (15.4 ± 6.1 m/h). In the early days of the study, the highest extracellular polymeric substances (EPS) content was found in the biomass from the reactors to which the materials with higher Ca and Mg content were added (380.18−598.30 mg/g MLVSS). The rate of specific oxygen uptake (SOUR) by biomass indicated an insufficient biomass content in the R1 reactor—to 7.85 mg O 2 /(g MLVSS∙h)—while in the reactors with materials, the SOUR values were at the higher levels.
    Keywords aerobic granular sludge ; new wastewater treatment technology ; physical and chemical properties of granules ; biological properties ; powdered mineral materials ; Organic chemistry ; QD241-441
    Subject code 660
    Language English
    Publishing date 2020-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Use of Shredded Recycled Plastic as Filter Bed Packing in a Vertical Flow Filter for Onsite Wastewater Treatment Plants

    Krzysztof Chmielowski / Wiktor Halecki / Adam Masłoń / Łukasz Bąk / Marek Kalenik / Marcin Spychała / Arkadiusz Niedziółka / Mariusz Łaciak / Michał Roman / Jakub Mazurkiewicz

    Sustainability, Vol 15, Iss 1883, p

    Preliminary Findings

    2023  Volume 1883

    Abstract: Household wastewater is a problem, especially in areas with a dispersed settlement where there is no wastewater collection system or wastewater treatment plant. In this case, it is necessary to build a local or onsite wastewater treatment plant. This ... ...

    Abstract Household wastewater is a problem, especially in areas with a dispersed settlement where there is no wastewater collection system or wastewater treatment plant. In this case, it is necessary to build a local or onsite wastewater treatment plant. This paper is an attempt to analyse the possibility of using recycled shredded ABS plastic (acrylonitrile butadiene styrene) as packing media in an experimental vertical flow filter for use in on-site wastewater treatment plants. Studies have shown that shredded recycled ABS is a promising filtration material that has several features important in the treatment process, like a large surface area, high mechanical strength and chemical inertness. The system was operated with a hydraulic load of 50 dm 3 /m 2 (3 months). BOD5 (biochemical oxygen demand), COD (chemical oxygen demand), and total suspended solids (TSS) reduction efficiency in the primary effluent was high; 94.4%, 77.8%, and 92.8%, respectively.
    Keywords flow filter ; reuse ; shredded recycled plastic ; waste management ; wastewater treatment plant ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 333
    Language English
    Publishing date 2023-01-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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