Grzegorz Wielgosiński

Effect Of Urban Traffic On The Immission Of Carbon Dioxide In The University Campus

Abstract The condition and quality of atmospheric air plays a very important role in the life of every living organism, including man. Every day we breathe atmospheric air containing CO2 whose level changes depending both on many external factors and physicochemical processes. The concentration of carbon dioxide in the air changes, among other things, due to the influence of communication routes which may adversely affect the environment. For this reason it is necessary to analyze changes in CO2 concentrations and try to determine their impact on the functioning of users of the area (so, one can observe and analyze seasonal impact of communication routes on separate sub-areas of research).

The use of ammonium sulfate as an inhibitor of dioxin synthesis in iron ore sintering process

Abstract The main air pollutants in the sintering process of iron ore are polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans (PCDD/Fs) and harmful dust. Ore sintering on sinter strands is one of the first technology steps in the ironworks. It is a process in which iron ore is crushed, subjected to annealing and mixed with appropriate additives, and then sintered in order to produce sinter which is the main component of iron in the blast furnace process. PCDD/Fs emissions were measured and the addition of ammonium sulfate as an inhibitor of the synthesis of dioxins in the sintering process of iron ore was studied. Abstrakt Do głównych substancji zanieczyszczających powietrze w procesie spiekania rud żelaza należą polichlorowane dibenzodioksyny i polichlorowane dibenzofurany (PCDD/PCDF), a także szkodliwe pyły. Spiekanie rud na taśmach jest jednym z pierwszych węzłów technologicznych huty o profilu surowcowym. Jest to proces, w którym ruda żelaza jest kruszona, poddawana wyżarzaniu i mieszana z odpowiednimi dodatkami, a następnie spiekana w celu otrzymania spieku, który stanowi główny składnik żelazowy w procesie wielkopiecowym. W aglomerowni wykonano pomiary emisji PCDD/Fs, a także badano dodatek siarczanu amonu jako inhibitora syntezy dioksyn w procesie spiekania rudy żelaza.

Dispersion of atmospheric air pollution in summer and winter season

Seasonal variation of air pollution is associated with variety of seasons and specificity of particular months which form the so-called summer and winter season also known as the “heating” season. The occurrence of higher values of air pollution in different months of a year is associated with the type of climate, and accordingly with different atmospheric conditions in particular months, changing state of weather on a given day, and anthropogenic activity. The appearance of these conditions results in different levels of air pollution characteristic for a given period. The study uses data collected during a seven-year period (2009–2015) in the automatic measuring station of immissions located in Eastern Wielkopolska. The analysis concerns the average and maximum values of air pollution (i.e., particulate matter PM10, sulfur dioxide, nitrogen dioxide, carbon monoxide, and ozone) from the perspective of their occurrence in particular seasons and months or in relation to meteorological actors such as temperature, humidity, and wind speed.

Analysis of CO2 concentration distribution inside and outside small boiler plants

Abstract Analysis of the distribution of CO2 concentrations was performed for a water-and-steam boiler plant located in a detached building supplying thermal energy to a hospital. The boiler plant was equipped with two low-temperature boilers and one high-temperature steam boiler. The maximum thermal energy demand of the hospital was 4280, 3500 kW of which came from the hot-water boilers and the remaining 780 kW from the steam boiler. Due to the operating system there were no permanent job positions in the boiler plant. Servicing consisted only in the supervision, periodic adjustment and maintenance of the equipment. These kinds of working conditions release the employer from the necessity to perform tests and measurements of working conditions in such a building. On the other hand, continuous measurements are made because of the installation safety and emissions of pollutants into the environment. The article presents results of the measurements and analysis of the distribution of CO2 concentrations inside and outside a small boiler plant, due to which it was found that the level of carbon dioxide concentration did not depend on the ambient air temperature. The resulting values are similar regardless of whether the measurements were taken in December 2012 or April 2013. However, there is an evident impact of seasons on the concentrations in the indoor air associated primarily with the demand for heat during the given period, the stay of people in the workplace and the number of working devices.

Effect of Meteorological Conditions and Building Location on CO2 Concentration in the University Campus

Abstract The quality of atmospheric air and the level of its pollution is inextricably linked with the development of humanity. Its prevalence and the lack of any natural protective barriers causes that it becomes a recipient of increasingly large amounts of different types of pollutants. This is particularly dangerous in the areas where both meteorological conditions and type of building prevent the spread of pollution. By using a portable gas micro-chromatograph it is possible to observe and analyze a seasonal impact of building density on carbon dioxide concentration and the effect of atmospheric conditions on CO2 level in the air in a specified area.

The Impact of Waste Incineration on Human Beings and The Environment

Abstract The article discusses issues related to the impact of incineration on human health and the environment. The aim of the work is to make a broad overview of the existing literature in this area. The problem was described in the literature based on a number of waste incineration plants studies in both Europe and all around the world. Subjects analyzed in the literature were risks at workplace, both administrative ones and directly related to the process of thermal treatment of waste. These risks result among others from the atmospheric emissions of many pollutants, including most of all polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans, heavy metals and some volatile organic compounds. The results of these studies will be an important argument in the discussion on the possible risks to humans and the environment posed by waste incineration plants and the expediency of building waste incinerators in Poland.

Ammonia Emission from Sewage Sludge Incineration Process

Abstract In quantitative terms, sludge produced in the process of municipal wastewater treatment represents a small part of the total waste generated in municipal sources - its quantity represents only a few percent of the generated mass of municipal waste. However, the threats it brings, do not allow it to be neglected while designing the wastewater treatment process. At the same time, with increasing requirements regarding the quality of sewage discharged into the environment, there is an increase in the amount of sludge produced in wastewater treatment processes. In recent years, the share of thermal treatment of municipal sewage sludge has risen sharply - about 12 modern sludge incineration plants have been built and construction of new ones is considered. During more than a four-year operation of the sewage sludge incineration plant in the Combined Sewage Treatment Plant in Lodz (GOS) a large ammonia emission from the combustion process was observed. So, a decision was taken to examine this process. The paper presents results of ammonia emission from the combustion of sewage sludge from GOS as a function of temperature.