Pawel Wiercik

Pawel Wiercik
Wrocław University of Environmental and Life Sciences · Institute of Environmental Engineering

PhD

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18
Publications
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57
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Publications

Publications (18)
Article
Full-text available
Process baths used for electropolishing and pickling of stainless steel have become increasingly contaminated with heavy metal ions over time. There is still lack of research on the neutralization of this type of technological wastewater with high concentrations of metal ions and containing complexing compounds, which significantly hinders their ef...
Article
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The presented study concerns the efficiency of removing nutrients, organic compounds and metal cations from municipal sewage by using a cylindrical photobioreactor (PBR) with biomass of microalgae growing on pine bark. The study was conducted in two cylindrical PBRs fed with municipal wastewater for 42 days. PBRs were internally illuminated with re...
Article
Full-text available
Organic fouling of an anion exchange resin results from the adsorption of the organics on its surface which block the diffusion of mobile ions inside the resin beads. As a result a decrease in a total capacity is observed. Generally the performance of anion exchangers is determined based on the breakthrough curves and studies of the adsorption kine...
Article
Fouling of the anion exchangers with organic compounds is a very common phenomenon. These compounds adsorb on the anion exchangers surfaces causing a decrease in the ion-exchange capacity. In practice, the performance of ion exchanger is generally assessed based on the breakthrough curves and the studies of the adsorption kinetics. There is little...
Article
Often within literature can be found descriptions of research using the technique of laser diffraction to characterize the composition of sewage and water, measurements of the number and volume of particle size distribution and fractal dimension of activated sludge flocs. This study focuses on the potential of the application of laser granulometric...
Article
Full-text available
Due fast biomass production, high affinity for N and P and possibilities to CO2 sequestration microalgae are currently in the spotlight, especially in renewable energy technologies sector. The majority of studies focus their attention on microalgae cultivation with respect to biomass production. Fuel produced from algal biomass can contribute to re...
Article
Full-text available
The analysis of particle size in suspensions carried out with use of the laser diffraction method enables us to obtain not only information about the size of particles, but also about their properties, shape and spatial structure, determined basing on fractal dimension. The fractal dimension permits the evaluation of the interior of aggregates, at...
Article
Full-text available
Jednym z problemów występujących na oczyszczalniach ścieków jest wytrącanie się struwitu. Kontrola procesu wytrącania się struwitu stwarza możliwości ochrony instalacji technologicznych przed jego negatywnymi skutkami, a powstały struwit może być wykorzystany jako nawóz mineralny. W pracy omówiono przyczyny tworzenia się struwitu w przewodach do tr...
Article
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The study presents the results of measurement of particle size distribution in suspensions contained in spent filter backwash water obtained from the water treatment plant in Golȩdzinów. Spent filter backwash water samples were collected in three test series during the backwashing of iron and manganese removal filters, during the period from 20 Aug...
Article
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In Poland, water supply for villages and small towns is provided mainly from groundwater resources. In spite of good physicochemical and bacteriological properties for groundwater, in most cases it is required to remove iron and manganese, which influences the applied treatment technologies. The processes of potable water treatment result in the em...
Article
Coagulation is the- common process used mainly to remove colloids from water. Colloids aire responsible i. a. for color and turbidity, Among many factors affect ins; coagulation very important are size and structure of the flocks produced during this process. The knowledge of the spatial structure of the lines enables one to predict their settle an...
Article
The interest in green roof technologies is increasing due to the many tangible benefits that allow to provide. One of them is the ability to improve stormwater management in urban areas, because construction of green roofs can retain and delay in runoff . Due to the fact that the market of green roofs in Poland is relatively young, there is still a...
Article
Full-text available
Granulometric composition of suspensions contained in filter backwash water affects filter treatment technology selection. The paper describes results of granulometric composition studies on filter backwash water suspensions collected from 46 groundwater treatment plants. An original, modified Avrami equation was proposed to interpret the results o...
Article
The aeration process involved compressed air and was aimed at improving the sedimentation of the suspended solids that form in the course of groundwater treatment. The experiments have revealed that the aeration of the backwash water from the filters used for iron and manganese removal from the groundwater being treated not only accelerated the pre...

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