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Search results for: VERTICAL SEEPAGE
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The influence of humic substances in treated sewage on the quality of surface waters
PublicationAt present the evaluation of WWTP effectiveness is based upon organic matter and nutrients removal. Recently it was found out that sewage treatment leads to formation of resistant to biochemical degradation organic compounds, similar to humic acids. The humic acids formed during sewage treatment process play diversified functions when discharged to surface waters - for instance they can act as carriers of hydrophobic organic pollutants...
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Review of sewage sludge management: standards, regulations and analytical methods
PublicationThis article presents the most popular methods of sewage sludge management and associated unit operations and processes referring to them. The most popular methods are: Reclamation and adaptation of lands to specific needs; plant cultivation not intended for consumption or for production of food; usage in agriculture; usage in building; recovery of phosphorus, rare earth metals or fats and usage in industry; producing combustible...
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The Development of Anammox and Chloroflexi Bacteria during the Composting of Sewage Sludge
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The newest researches and applications of treatment wetlands in sewage sludge management
PublicationIn the paper the newest researches and applications of treatment wetlands conducted by re-searchers of Civil and Environmental Faculty are presented. Among others it was proved that this technology could be successfully implemented for highly polluted wastewater treatment. Within the research project two multistage treatment wetlands, one for landfill leachate and the second for reject water from digested sewage sludge centrifugation,...
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The quality of sewage sludge stabilized for a long time in reed basins
PublicationThe aim of the work was to determine changes of long-term sewage sludge quality stabilized in reed basins from 7-15 years. The following parameters were evaluated: dry matter and organic matter concentration, nitrogen, phosphorus, and selected heavy metal (Cd, Ni, Pb, Cr, Cu, Zn) fractions. The material for the investigations was collected from 4 reed basin systems (utilisated sewage sludge) located in conventional WWTPs in Denmark...
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Long-term changes in sewage sludge stored in a reed bed
PublicationProwadzono badania zmian następujących w osadach składowanych na obszarze porośniętym trzciną. Pomiary wykonywano w próbach osadów stratyfikowanych przechowywanych w okresie od kilku do kilkudziesięciu lat. Analizowano wilgotność, zawartość materii organicznej, azot ogólny i fosfor ogólny. Wiele osadów określono przy pomocy metody ołowiowej. M. in. wykazano, że największa dynamika zmian ma miejsce w okresie pierwszych kilkunastu...
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Manufacturing of Lightweight Aggregates as an Auspicious Method of Sewage Sludge Utilization
Publication: Sewage sludge is a high-volume and low-cost waste commonly generated worldwide, so its utilization is a vital issue. The application of this waste in the manufacturing of lightweight aggregates was investigated. The process was performed using intensive mixers with volumes of 5 and 30 L, as well as the industrial 500 L mixer. Then, granulates were sintered in a tube furnace. The influence of composition and mixer size on the...
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Evaluation of potentially toxic elements’ (PTEs) vertical distribution in sediments of Gafsa–Metlaoui mining basin (Southwestern Tunisia) using geochemical and multivariate statistical analysis approaches
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Repair Augmentation of Unstable, Complete Vertical Meniscal Tears With Bone Marrow Venting Procedure: A Prospective, Randomized, Double-Blind, Parallel-Group, Placebo-Controlled Study
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ICTP concentration in cervical-vaginal fluid as a potential marker of membrane collagen degradation before labor
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Self-assembly of vertically oriented graphene nanostructures: multivariate characterisation by Minkowski functionals and fractal geometry
PublicationThe enormous self-assembly potential that graphene and its derived layered materials offer for responding to the contemporary environmental challenges has made it one of the most investigated materials. Hence, tuning its extraordinary properties and understanding the effect at all scales is crucial to tailoring highly customised electrodes. Vertically oriented graphene nanostructures, also known as carbon nanowalls (CNWs), due...
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Two-dimensional vertical Reynolds-averaged naviers-stokes equations versus one-dimensional Saint-Venant model for rapidly varied open channel water flow modelling
PublicationPrzedstawiono dwa modele przepływu wody ze swobodną powierzchnią -płaski pionowy model Reynoldsa i model de Saint-Venanta.Do rozwiązania równań pierwszego modelu zastosowano schemat SIMPLE oraz wykorzystano metodę cząstek znaczonych MAC do wyznaczania swobodnej powierzchni wody. Równania Saint-Venanta rozwiązano metodą objętości skończonych. Obydwa modele zastosowano do symulacj zjawiska typu katastrofa zapory. Porównano wyniki...
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Measurement techniques for assessing the olfactory impact of municipal sewage treatment plants
PublicationThe study presents information about the measurement techniques used for the assessment of air quality in terms of the olfactory intensity resulting from the operation of municipal sewage treatment plants. Advantages and disadvantages of the measurement techniques used are presented. Sources of malodourous substance emission from sewage treatment plants were described, and the malodourous substances emitted were characterised....
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Changes of heavy metals concentrations in the profile of sewage slugde in reed beds
PublicationW Polsce pojawiły się jedynie pilotowe obiekty trzcinowe unieszkodliwiające osady ściekowe. Natomiast w Danii są one eksploatowane w pełnej skali w dużych oczyszczalniach ścieków. Materiał badawczy pobrano z czterech duńskich obiektów o długim czasie eksploatacji wynoszącym od 7 do 15 lat. Obiekty te zlokalizowane były na terenie oczyszczalni: Rudkobing, Vallo, Naskov i Helsinge koło Kopenhagi obsługujących od 9 000 do 40 000 mieszkańców....
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Sewage sludge disintegration - A promising way to minimize negative environmental impact
PublicationW artykule przedstawiono przegląd technologii dezintegracji osadów ściekowych. Efektem stosowania dezintegracji jest intensyfikacja produkcji biogazu oraz poprawa właściwości osadu przefermentowanego. Zaprezentowano także wyniki badań dotyczące mechanicznej dezintegracji osadów ściekowych pochodzących z komunalnej oczyszczalni ścieków w Gdańsku. Określono wpływ rodzaju dezintegracji (homogenizator, ultradźwięki) na jakość cieczy...
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Nitrogen pathways during sewage treatment in constructed wetlands in temporary climate
PublicationThe objectives of this paper is to estimate the role and quantity of the unit process responsible for removal or/and retention of nitrogen in different types of constructed wetlands in vegetation season and outside vegetation season. To estimate the role of the plant two objects inhabited one with willow and the other with reed were selected to assessment. Among anthers it was indicated that the concentrations of contamination...
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Soil and groundwater fecal contamination as a result of sewage sludge land application.
PublicationThe release of sludge-born bacteria and their further transport in subsurface was studied. The migration of bacteria was investigated in column experiments which were carried out under the conditions corresponding to naturally occurring extreme rainfall. Coal fly ash as well as coarse and medium grained sand, which properties are similar to the soils present in degraded areas, were used as column beds. Sewage sludge was applied...
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The speciation of selected heavy metals in sewage sludge stabilized in reed basins
PublicationThe aim of the work was to determine influence of time on organic matter content, nutrients concentrations as well as speciation of selected heavy metals (Cd, Pb, Ni, Cr, Cu and Zn) in sewage sludge stabilized in reed basins during 7-15 years. The analyzed sewage sludge was collected from reed basins from four municipal WWTPs located in Denmark serving from 9 000 to 40 000 pe in Vallo, Rudkøbing, Nakskov and Helsinge. Sewage...
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Formation of environmentally friendly chloroorganic compounds technology by sewage and by-products utilization
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Law regulations against physical calculations - problems in water and sewage management
PublicationW pracy zostały opisane przykłady trzech typów problemów w zakresie gospodarki wodno-ściekowej, z jakimi można spotkać się w związku z wejściem w życie przepisów uwzględniających obowiązujące w tej dziedzinie dyrektywy Unii Europejskiej. Są to m.in. problemy ze zbyt szeroką możliwością interpretacji pewnych zapisów, problemy związane z nieuwzględnianiem w przepisach praw fizyki, a także brak ustawowej regulacji pewnych zagadnień.
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Stabilization of Solid Residues Obtained During Sewage Sludge Thermal Treatment
PublicationCurrently wastewater treatment plants are still dealing with the problem of ecological management of sewage sludge. Nowadays, thermal utilization is considered the most eco-friendly way of processing excess sludge. However, during mentioned process, fractions of ashes and dusts are generated. Such wastes, especially dusts fraction, can be potentially harmful for the environment and wastes should be stabilized before further management....
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Perspective of hydrophytes method application for sewage treatment from rural areas
PublicationOczyszczalnie hydrofitowe usuwają bardzo wiele zanieczyszczeń m.in substancję organiczną, zawiesinę ogólną, związki azotu oraz metale ciężkie i mikroorganizmy patogenne. Celem pracy jest ocena roli roślin oraz wpływu konfiguracji złóż hydrofitowych na skuteczność usuwania bądź zatrzymywania zanieczyszczeń w sezonie wegetacyjnym i poza wegetacyjnym. Miedzy innymi wykazano,że skuteczność usuwania zanieczyszczeń w obu sezonach nie...
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A geophysical, geochemical and microbiological study of a newly discovered pockmark with active gas seepage and submarine groundwater discharge (MET1-BH, central Gulf of Gdańsk, southern Baltic Sea)
PublicationHigh-resolution bathymetric data were collected with a multi-beam echosounder in the southern part of the Baltic Sea (region MET1, Gulf of Gdańsk) revealing the presence of a 10 m deep and 50 m in diameter pockmark (MET1-BH) on the sea bottom (78.7 m). To date, no such structures have been observed to reach this size in the Baltic Sea. The salinity of the near-bottom water in the pockmark was about 2 PSU (about 31.22 mmol/l...
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Difference in Perceived Speech Signal Quality Assessment Among Monolingual and Bilingual Teenage Students
PublicationThe user perceived quality is a mixture of factors, including the background of an individual. The process of auditory perception is discussed in a wide variety of fields, ranging from engineering to medicine. Many studies examine the difference between musicians and non-musicians. Since musical training develops musical hearing and other various auditory capabilities, similar enhancements should be observable in case of bilingual...
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Wpływ geometrii i szorstkości ścian na wielkość naporu materiału sypkiego na dno silosu = Influence of geometry and wall roughness of silo wall on bottom vertical pressure
PublicationW pracy przedstwiono analizę wpływu wysokości i szorstkości ścian silosu cylindrycznego na rozkład naporu na ściany i dno. Badania przeprowadzono dla piasku bezkohezyjnego.
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Efficient and Systematic Solution of Real and Complex Eigenvalue Problems Employing Simplex Chain Vertices Searching Procedure
PublicationW artykule zaprezentowano nowatorską metodę, pozwalającą w bardzo efektywny sposób rozwiązywać rzeczywiste i zespolone zagadnienia własne (które przekształcić można w równania nieliniowe) często spotykane w elektrodynamice obliczeniowej. Idea metody oparta jest o śledzenie miejsc zerowych otrzymanego równania nieliniowego. W proponowanej technice zastosowano regularne wielościany, budując z nich łańcuch (ścieżkę) poszukiwanych...
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Multi-pathway mechanism of polydopamine film formation at vertically aligned diamondised boron-doped carbon nanowalls
PublicationBoron-doped carbon nanowall (B:CNW) electrodes were used as a platform for studying the electropolymerisation of dopamine. Due to the unique properties of B:CNW, including the fast charge-transfer kinetics and high surface conductivity, a high degree of reversibility of redox reactions was achieved. Three separated redox peaks were observed on voltammograms and attributed to three fundamental reactions in the dopamine polymerisation...
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Quantitatively and qualitatively characteristic of organic matter in sewage after treatment in constructed wetlands
PublicationNajczęstszym kryterium oceny skuteczności oczyszczania ścieków jest efektywność usuwania zanieczyszczeń. Jednakże oczyszczone ścieki zawierają pewne ilości substancji organicznej niepodatnej na rozkład biologiczny tzw. refrakcyjnej.Organiczne substancje refrakcyjne to przede wszystkim kwasy humusowe, które swoja obecnością w wodzie mogą pogarszać jej właściwości i utrudniać procesy uzdatniania do celów konsumpcyjnych. Wykazano,że...
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Present state of sewage and wastewater treatment plants in the polish coast of Baltic Sea
PublicationIn the paper the state of art of wastewater management in four zones of Polish Baltic Sea coast: the Vistula Lagoon, the Bay of Gdansk and Bay of Puck, the open sea zone and the Szczecin Lagoon, is discussed. Hydrological characteristics of these four zones as well as characteristics and operation effectiveness of wastewater treatment plants (WWTPs) located there, are presented.
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Directions and Challenges in the Management of Municipal Sewage Sludge in Poland in the Context of the Circular Economy
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The Development of Anammox and <em>Chloroflexi</em> Bacteria during Composting of Sewage Sludge
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Endotoxin exposure and changes in short-term pulmonary function among sewage workers
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Distribution and concentration of heavy metals in ash during thermal process sewage sludge
PublicationKażdego roku na świecie, obserwuje się znaczący wzrost produkcji osadów ściekowych. Przykładowo w 2006 roku, w Polsce ich ilość osiągnęła 1 mln ton w przeliczeniu na sucha masę, w tym ok. połowa pochodziła z oczyszczalni komunalnych. Problem ich zagospodarowania stanowi przedmiot zainteresowania wielu instytucji zajmujących się ochroną środowiska, zarówno w Polsce, jak i na całym świecie. Ich dotychczasowe wykorzystania polegało...
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Present state of sewage and wastewater treatment plants in the polish coast of Baltic sea.
PublicationW pracy przedstawiono stan gospodarki ściekowej w czterech strefach polskiego wybrzeża Bałtyku: Zalewu Wiślanego, Zatoki Gdańskiej z Zatoką Pucką, strefy otwartego morza oraz Zalewu Szczecińskiego. Wymienione strefy scharakteryzowano pod względem hydrologicznym oraz przedstawiono charakterystykę i efektywność pracy oczyszczalni ścieków zlokalizowanych na terenie każdej z nich. Ponadto, oszacowano inne, istotnie ważne źródła zanieczyszczeń...
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Examples of renewable and waste energy sources utilisation in municipal sewage treatment plants.
PublicationTematem pracy jest problem zaopatrzenia miejskich oczysczalni ścieków w energię elektryczną i cieplną. przedstawiono dwie polskie oczyszczalnie scieków: w Żywcu i Grudziądzu jako przykłądy zastosowania odnawialnych i odpadowych źródeł energii. Zamieszczone zostały informacje na temat ilości produkowanego biogazu, źródeł energii, systemów zaopatrzenia w ciepło, w tym agregatów kogeneracyjnych i pomp ciepła. Sformułowano wnioski...
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Reclamation of phosphogypsum deposition site Wiślinka near Gdańsk with municipal sewage sludge.
PublicationOmówiono zastosowanie osadów ściekowych do rekultywacji składowiska fosfogipsów w Wiślince k. Gdańska. Głównie pojawiają się problemy ze stabilizacją stoków oraz z sukcesją roślinności i zwalczaniem erozji wiatrowej.
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Heavy metals partition between leachate and soilds the course of municipal sewage treatment.
PublicationAnalizowano zawarotści metali ciężkich w cieczy nadosadowej i zawiesinie w ściekach oraz osadach ściekowych po stabilizacji oraz odwadnianiu.Badania prowadzono w miejskiej oczyszczalni ścieków ''Wschód'' w Gdańsku.
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Negative carbon dioxide gas power plant integrated with gasification of sewage sludge
PublicationOne of the primary objectives of the negative carbon dioxide gas power plant (nCO2PP) is to develop an innovative technology confirming the possibility of the use of sewage sludge to produce electricity while having a positive impact on the environment. In this paper, a mathematical model is presented to estimate thermodynamic parameters of the system in relation to the gasification process and changes in such parameters in the...
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Entrained Flow Plasma Gasification of Sewage Sludge–Proof-of-Concept and Fate of Inorganics
PublicationSewage sludge is a residue of wastewater processing that is biologically active and consists of water, organic matter, including dead and living pathogens, polycyclic aromatic hydrocarbons, and heavy metals, as well as organic and inorganic pollutants. Landfilling is on the decline, giving way to more environmentally friendly utilisation routes. This paper presents the results of a two-stage gasification–vitrification system, using...
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Structural Adaptive, Self-Separating Material for Removing Ibuprofen from Waters and Sewage
Publication-cyclodextrin nanosponge (CDM) was used for the adsorption of ibuprofen (IBU) from water and sewage. The obtained material was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET), Barrett– Joyner–Halenda (BJH), Harkins and Jura t-Plot, zeta potential, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and elementary analysis (EA)....
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A novel concept of negative CO2 emission power plant for utilization of sewage sludge
PublicationCarbon Capture and Storage (CSS) technology is considered an important “bridge technology”, allowing effective abatement of CO2 emissions for power units using fossil fuels. However, if biomass is used in a power plant, equipped with CCS system, negative CO2 emissions can be achieved. In practice, wide development of such technologies would enable not only reduction of CO2 emissions, but also reversal of the harm done so far. In...
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Author Reply to “Regarding ‘Repair Augmentation of Unstable, Complete Vertical Meniscal Tears With Bone Marrow Venting Procedure: A Prospective, Randomized, Double-Blind, Parallel-Group, Placebo-Controlled Study’”
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A comparison of McGrath MAC® and standard direct laryngoscopy in simulated immobilized cervical spine pediatric intubation: a manikin study
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Clinical significance of CD34, podoplanin and Ki-67 expression in patients with locally advanced squamous cell cervical carcinoma
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Long-Term Follow-Up after Laparoscopic Uterovestibular Anastomosis in Patients with Cervical Atresia and Complete Absence of the Vagina
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A roadmap for a comprehensive control of cervical cancer in Poland: integration of available solutions into current practice in primary and secondary prevention
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Potential fertilizing properties of sewage sludge treated in the Sludge Treatment Reed Beds (STRB)
PublicationIn research the fertilizer value of sludge from reed beds is evaluated based on the sampling sludge on different depths from 4 Danish STRB after long periods of stabilization. The dewatering efficiency of sewage sludge in the STRB is comparable to mechanical dewatering. The long-term stabilization of sewage sludge progressively decreases the concentration of organic matter due to the process of humification. The aim of the work...
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Ecological and Economic Aspects of the Application of Sewage Sludge in Energetic Plant Plantations - A Swot Analysis
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WATER QUALITY PARAMETERS OF A SMALL MIDFOREST WATERCOURSE RECEIVING DOMESTIC SEWAGE AFTER TREATMENT
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Transcriptome sequencing of Brassica napus highlights the complex issues with soil supplementation with sewage sludge
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