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Wyniki wyszukiwania dla: WATER TREATMENT PLANT
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Ragged Robin (Lychnis flos-cuculi) - a plant with potential medicinal value
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Neural Networks in the Diagnostics Process of Low-Power Solar Plant Devices
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Effect of pesticides on microorganisms, enzymatic activity and plant in biochar-amended soil
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Strength and Compressibility of Ammonia-Soda Residue from the Solvay Sodium Plant
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Analysing selection of low-temperature medium for cogeneration micro power plant
PublikacjaThe article analyses the ORC system working with dry and wet low-boiling media which are most frequently used in installations of this type. Two types of cycles were examined, which were the cycle with heat regeneration for dry media: fc72, hfe7100, R227ea, R245fa, R423a and R600a, and the cycle without heat regeneration for wet media: R11, R12, R134a, R718 and 507a. The calculations were performed for the assumed required thermal...
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Possibility of use adsorption chillers for increase efficiency in conventional power plant
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Small Hydropower Plant With Integrated Turbine-Generators Working at Variable Speed
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Pilot plant studies on the removal of trihalomethanes by composite reverse osmosis membranes
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GENOMIC ANALYSIS OF PLANT-ASSOCIATED BACTERIA AND THEIR POTENTIAL IN ENHANCING PHYTOREMEDIATION EFFICIENCY
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Aromatic heptaene antibiotics as an alternative for synthetic triazole fungicides in plant protection
PublikacjaAn in vitro antifungal activity of candicidin and ascosin antibiotics (0,01-10 μg/mL) towards representative strains of phytopathogenic fungi was detd. Both compds. exhibited similar half max. effective concns. inhibiting growth of the fungi as that of tebuconazole used for comparison.
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Analysing selection of low-temperature medium for cogeneration micro power plant
PublikacjaThe article analyses the ORC system working with dry and wet low-boiling media which are most frequently used in installations of this type. Two types of cycles were examined, which were the cycle with heat regeneration for dry media: fc72, hfe7100, R227ea, R245fa, R423a and R600a, and the cycle without heat regeneration for wet media: R11, R12, R134a, R718 and 507a. The calculations were performed for the assumed required thermal...
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The influence of plant protection by effective microorganisms on the content of bioactive phytochemicals in apples
PublikacjaThe phytochemicals of two apple cultivars (Yellow Transparent and Early Geneva) protected in two ways, conventionally with chemical pesticides or by effective microorganisms (EM), were compared. Two types of components were determined: lipids synthesised constitutively and generated via inducible pathways polyphenols along with antioxidant activity and profiles. The antioxidant activities assessed with ABTS, DPPH and Folin–Ciocalteu...
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Micropropagation of cyclopia genistoides, an endemic south african plant of economic importance
PublikacjaOpracowano efektywną procedurę hodowli tkankowej dla komercyjnie ważnej rośliny gatunku Cyclopia genistoides.
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ISSUES OF ECONOMIC ANALYSIS OF ELECTRIC ENERGY GENERATION IN A FLOATING POWER PLANT
PublikacjaThis article presents basic dependences for conducting a technical and economic analysis related with investment projects. It describes a combined system of a compression ignition engine and a steam turbine, whose aim, when placed on a floating platform, is to generate electric energy in the so-called distributed generation system. Such a system involves a reciprocating internal combustion engine and a connected steam turbine system...
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Selected Technical Requirements for Photovoltaic Plant Interconnection with a Medium Voltage Grid
PublikacjaThe article discusses some selected technical requirements, which according to these authors should be recognised and met by photovoltaic power plants connected to national distribution grids in the context of their likely development. This development today is limited, since Polish legislation has not implemented the relevant EU Directive [8]. The study points out the purposefulness of incorporating the necessary requirements...
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PCA application in assessment of fertilizer plant impact on different components of environment
PublikacjaW pracy podjęto próbę oceny wpływu Gdańskich Zakładów Nawozów Fosforowych "Fosfory" S.A. na najbliższe środowisko. W pracy przedstawiono wyniki świadczące o jakości różnych komponentów środowiska na terenie objętym wpływem zakładu. W pracy przedstawiono wyniki oznaczeń 44 pierwiastków w 46 próbkach gleb i traw pobieranych na terenie fabryki oraz w bezpośrednim sąsiedztwie. 37 z 44 oznaczonych pierwiastków użyto do wykonania analiz...
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Application of INAA in assesment of phosphatic fertilizer plant impact on the adjacent environment
PublikacjaW pracy przedstawiono wyniki badań przeprowadzonych na terenie GZNF "Fosfory" S.A. i wokół fabryki. Oznaczono szerokie spektrum pierwiastków w próbkach gleby, trawy, fosforytów, potrójnego superfosfatu, Amofoski i soli potasowej. Podjęto próbę oceny wpływu GZNF "Fosfory" na otaczające je środowisko. Badania przeprowadzono w ramach projektu UE "Fertilizers and Health" ICA2-CT-2000-10025, w którym brały udział: Holandia, Rosja, Uzbekistan,...
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Microbiological and biological aspects of wastewater tretment plant Wschód in Gdańsk Operation.
PublikacjaW pracy wykazano, iż w oczyszczalni Wschód w Gdańsku, pracującej w zmodyfikowanym systemie UCT, zanieczyszczenia bakteriologiczne ze ścieków są usuwane w granicach od 92% do ponad 99%, a zanieczyszczenia parazytologiczne niemal całkowicie. Pomimo tego odpływy są nadal dość znacznie zanieczyszczone bakteriologicznie o czym świadczy liczba bakterii wskaźnikowych oraz okresowa obecność bakterii z rodzaju Salmonella. Ustalono, iż...
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Effects of stressful physico-chemical factors on the fitness of the plant pathogenic bacterium Dickeya solani
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WSPÓŁPRACA BLOKU GAZOWO-PAROWEGO Z OBIEGIEM ORC = Combinded power plant in cooperation with ORC
PublikacjaIn the paper presented is the idea of a combined gas and steam power plant cooperation with a low temperature organic Rankine cycle ORC unit. Considerations presented in the paper are accomplished for the Gorzów CHP. The intention of present analysis is heat recovery of low temperature energy and its further use in ORC cycle in order to produce electricity, without increase in fuel consumption. Waste energy is recovered from the...
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The Influence of Cooperation on the Operation of an MPC Controller Pair in a Nuclear Power Plant Turbine Generator Set
PublikacjaThe paper discusses the problem of cooperation between multiple model predictive control (MPC) systems. This approach aims at improving the control quality in electrical energy generation and forms the next step in a series of publications by the authors focusing on the optimization and control of electric power systems. Cooperation and cooperative object concepts in relation to a multi MPC system are defined and a cooperative control...
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The role of colloidal and particulate organic compounds in idenitrification and EBPR occurring in a full-scale activatedsludge system
PublikacjaThe aim of this study was to determine the immediate effects of slowly biodegradable substrates on the denitrification capability andphosphate release/uptake interactions for a full-scale biomass process from the ''Wschod'' wastewater treatment plant (WWTP) in Gdansk (Poland). Since it is hard to distinguish the slowlybiodegradable substrate in a direct way, a novel procedure based on batch experiments was developed and implemented....
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Fault detection and diagnostics of complex dynamic systems using Gaussian Process Models - nuclear power plant case study
PublikacjaThe article examines the use of Gaussian Process Models to simulate the dynamic processes of a Pressurized Water nuclear Reactor for fault detection and diagnostics. The paper illustrates the potential of Gaussian Process Models as a tool for monitoring and predicting various fault conditions in Pressurized Water nuclear Reactor power plants, including reactor coolant flow and temperature variations, deviations from nominal working...
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The effects of different aeration modes on ammonia removal from sludge digester liquors in the nitritation–anammox proces
PublikacjaThe aim of this study was to determine the impact of continuous and intermittent aeration on the rate of ammonia removal in the combined nitritation–anammox process. This process was run in two parallel sequencing batch reactors (SBRs), with a working volume V = 10 L, treating sludge digester liquors from the Gdansk (Poland) wastewater treatment plant (WWTP). The ammonia oxidizing bacteria were cultivated from activated sludge...
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Manufacturing and Recycling Impact on Environmental Life Cycle Assessment of Innovative Wind Power Plant Part 2/2
PublikacjaThe process of conversion of wind kinetic energy into electricity in innovative wind power plant emits practically no harmful substances into the environment. However, the production stage of its components requires a lot of energy and materials. The biggest problem during production plan-ning process of an innovative wind power plant is selection of materials and technologies and, consequently, the waste generated at this stage....
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Direct-contact condensation from vapour- gas mixture in a spray ejector condenser for negative CO2 power plant
PublikacjaDirect-contact condensation of vapour containing the inert gas on a spray of subcooled liquid exists in a number of technical applications. For example, it may be found in the nuclear industry (e.g. pressurized jet under normal operating conditions, in safety analyses) or in the chemical industry (e.g. mixing-type heat exchanger, degasser, sea water desalting). The problem is also essential to modelling and analysis of some...
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DESIGN ANALYSIS OF HYBRID GAS TURBINE - FUEL CELL POWER PLANT IN STATIONARY AND MARINE APPLICATIONS
PublikacjaThe paper concerns design analysis of a hybrid gas turbine power plant with a fuel cell (stack). The aim of this work was to find the most favorable variant of the medium capacity (approximately 50 MW) hybrid system. In the article, computational analysis of two variants of such a system was carried out. The analysis let to calculate capacity, efficiency of both variants and other parameters like flu gas temperature. The paper...
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PAD4, LSD1 and EDS1 regulate drought tolerance, plant biomass production, and cell wall properties
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Multi-region fuzzy logic controller with local PID controllers for U-tube steam generator in nuclear power plant
PublikacjaIn the paper, analysis of multi-region fuzzy logic controller with local PID controllers for steam generator of pressurized water reactor (PWR) working in wide range of thermal power changes is presented. The U-tube steam generator has a nonlinear dynamics depending on thermal power transferred from coolant of the primary loop of the PWR plant. Control of water level in the steam generator conducted by a traditional PID controller...
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Membrane technologies assisting plant-based and agro-food by-products processing: A comprehensive review
PublikacjaBackground Nowadays, membrane-based technologies (e.g. microfiltration, ultrafiltration, nanofiltration, membrane distillation, and pervaporation) have demonstrated to meet the requirements to be involved in different food and bioproduct processes. Scope and approach Several applications have been developed, including either separation, recovery or concentration of bioactive molecules from agro-food products and by-products,...
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The Influence of Selected Plant Essential Oils on Morphological and Physiological Characteristics in Pseudomonas Orientalis
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Wind and Solar Power Plant End-of-Life Equipment: Prospects for Management in Ukraine
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An evaluation of endemic exposure of citizens living in near a Gdańsk Phosphatic Fertilizer Plant
PublikacjaPrzeprowadzono ocenę wpływu Gdańskich Zakładów Nawozów Fosforowych FOSFORY na mieszkańców różnych dzielnic Gdańska. Oznaczono - za pomocą Neutronowej Analizy Aktywacyjnej (NAA) stężenia Al, As, Au, Br, Ca, Cl, Cu, Dy, I, In, K, La, Mg, Mn, Mo, Na, S, Sb, Sm, U, V, Zn w próbkach włosów i paznokci stóp, zebranych od 22 osób mieszkających w sąsiedztwie Zakładów oraz od jedenastoosobowej grupy kontrolnej. Podstawowe różnice pomiędzy...
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Application of Organic Rankine Cycle as bottoming cycle to conventional heat and power plant
PublikacjaW pracy rozważono możliwość zastosowania układu ORC w skojarzeniu z ciepłownią lub elektrociepłownią celem podniesienia stopnia wykorzystania jednostki CHP podczas eksploatacji w skali roku. Połączenie układu ORC z zawodową jednostką CHP może wpłynąć na wzrost rocznej produkcji energii elektrycznej i jednoczsne zmniejszenie fluktuacji podczas pracy bloku energetycznego. Z jednej strony następuje konwersja energii cieplnej na elektryczną...
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Experimental Investigation of the ORC System Elements of a Home Cogenerative Micro Power Plant
PublikacjaW pracy przedstawiono wyniki badań obiegu ORC z prototypową pompą czerpakową czynnika roboczego HFE 7100 i elektrycznym przepływowym podgrzewaczem oleju termalnego w układzie ORC bez regeneracji. Z analizy wyników badań wynika, że w obiegu ORC bez regeneracji z zaworem rozprężnym (symulującym pracę mikroturbiny) osiągnięto przegrzanie par czynnika niskowrzącego HFE 7100. Uzyskano powtarzalność wyników badań wykonanych serii pomiarowych...
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Application of Spatial Models in Making Location Decisions of Wind Power Plant in Poland
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Reliability Testing of Wind Power Plant Devices with the Use of an Intelligent Diagnostic System
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Recent Insights into Plant miRNA Biogenesis: Multiple Layers of miRNA Level Regulation
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Influence of Pumped-Storage Power Plant on Physical and Ecological State of Lake Żarnowiec
PublikacjaOd 1983 roku istnieje elektrownia szczytowo-pompowa w Żarnowcu. Od 1973 roku do chwili obecnej prowadzono badania stanu ekologicznegi, chemicznego i fizicznego wód jeziora Żarnowieckiego. W artykule przedstawiono wyniki tych badań i na ich podstawie oceniono wpływ pracy elektrowni na stan jeziora.
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Symulator komputerowy "Refrigerating Plant" nowoczesnym narzędziem w kształceniu mechaników okrętowych
PublikacjaW artykule przedstawiono możliwości kształcenia prowadzonego w oparciu o program komputerowy typu cbt - Chłodnia Prowiantowa. Omówiono jego strukturę i zawartość merytoryczną. Przedstawiono sposób oceny osoby szkolonej wykorzystującej ten program. Wskazano na korzyści płynące z zastosowania programów tego typu w kształceniu mechaników okrętowych. Materiał bogato ilustrowano przykładami ekranów z prezentowanego programu.
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Jerusalem artichoke (Helianthus tuberosus L.) as a medicinal plant and its natural products
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Efficiency analysis of an energy conversion system for a variable speed small hydropower plant
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Biologically Active Preparations from the Leaves of Wild Plant Species of the Genus Rubus
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The QDMC Model Predictive Controller for the Nuclear Power Plant Steam Turbine Control
PublikacjaThere are typically two main control loops with PI con trollers operating at each turbo-generator set. In this paper a model predictive controller QDMC for the steam turbine is proposed - instead of a typical PI controller. The QDMC controller utilize a step-response model for the controlled system. This model parameters are determined, based on the simplified and linear model of turbo-generator set, which parameters are identified...
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The distributed model predictive controller for the nuclear power plant turbo-generator set
PublikacjaTypically there are two main control loops with PI controllers operating at each turbo-generator set. In this paper a distributed model predictive controller DMPC, with local QDMC controllers for the turbine generator, is proposed instead of a typical PI controllers. The local QDMC controllers utilize step-response models for the controlled system components. These models parameters are determined based on the proposed black-box...
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Pipeline System for Heat Transportation from Nuclear Power Plant – an Optimizing Approach
PublikacjaOver the last few years heat piping insulation technology and pump systems efficiency have been significantly improved. Reduced thermal losses encourage heat transportation over long distances. It provides an opportunity for increasing thermodynamic efficiency of Nuclear Power Plants (NPPs) that are often located in rural areas because of safety issues. It can be achieved by Combined Heat and Power (CHP) generation, as heat produced...
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Analysis of an Energy Management System of a Small Plant Connected to the Rural Power System
PublikacjaThis paper presents the analysis of an energy management system (EMS) implemented to fulfill the requirements of a microgrid (MG) power supply owned by a small industrial company and connected to the rural power system. The main goal of this system is to ensure connection with the existing rural power system in terms of energy exchange, as well as to perform islanding mode operation of the microgrid based on the energy demand of...
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Assessment of the impact of a phosphatic fertilizer plant on the adjecent environment using fuzzy logic
PublikacjaZbadano wpływ zakładów nawozów fosforowych na otaczające środowisko. W próbkach trawy i gleby oraz produktów i produktu ubocznego oznaczono wybrane pierwiastki ziem rzadkich, metale ciężkie i metaloidy. Zbadano rozkład stężeń pierwiastków oznaczonych w próbkach gleby i trawy wzdłuż południowego i wschodniego kierunku, porównując ją ze stężeniami oznaczonymi w glebie i trawie z terenu zakładów oraz w substratach i produktach. Wyniki...
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The Concept of a Methodology for Selecting the Optimal Parameters of Heat Received from a Nuclear Power Plant Operating in a Partial Cogeneration Mode
PublikacjaThe paper presents the concept of the objective function which is to allow the selection of optimal parameters of the district heating system using a nuclear power plant operating in partial cogeneration mode. The concept is based on research carried out a number of years ago. The size of annual expenses was proposed as the objective function, which allows to compare the operation of a nuclear power plant in partial cogeneration...
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Different design aspects of an Organic Rankine Cycle turbine for electricity production using a geothermal binary power plant
PublikacjaIn recent years, pressure has been growing to increase the share of renewable energy sources in electricity generation, which may offer opportunities for the development of geothermal energy in regions that have been so far considered unprofitable in this respect. One such country currently undergoing an energy transition is Poland in which low-temperature geothermal resources are currently used for district heating and recreation...