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Activity of Polish organisations participating in the EMAS scheme to reduce the emission of air contaminants

Nycz-Wróbel Jadwiga

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

2024

z. 191

387--404

Purpose: The purpose of this paper was to present the undertakings of Polish enterprises participating in the EMAS scheme, dealing with waste and sewage management, water supply and land reclamation, implemented in order to reduce air contaminants emissions. Design/methodology/approach: The assumed research method was based on the analysis of secondary sources in form of environmental statements. The selection of sample was targeted and the research involved a complete analysis among 19 companies participating in the EMAS scheme, selected based on their business profile and dealing with waste and sewage management, water supply and land reclamation. The analysis described herein allowed to identify most common initiatives aimed at reduction of emissions ad indicate specific solutions applied in that area. Findings: Most frequent solutions include: vehicle replacement, use of renewable sources of energy, use of low-emission technologies, devices or systems, failure prevention systems, monitoring, analysis and measurement of emissions. Possibilities to apply specific solutions have been indicated considering different profiles of activity. Research limitations/implications: The fact that data in environmental reports are not uniform, which makes them difficult to analyse, is the limitation of the described research. Exemplary solutions are not provided in all environmental reports. Further research might focus on the analysis of initiatives taken by Polish manufacturing or power engineering companies in the area of waste management. Practical implications: The key input of the described research is the list of specific solutions that could be implemented in organisations with different profiles of activity in order to reduce emissions of air contaminants. Social implications: Exemplary solutions beneficial in terms of air quality improvement, and also general life quality improvement, have been presented. Originality/value: The outcome of this study may supplement previous research concerning the EMAS scheme, providing specific examples of solutions that could be implemented in organisations to reduce emissions of air contaminants.

Recent developments and experiences in modular dry mechanical vacuum pumping systems for secondary steel processing

Bruce S., Cheetham V.

Archives of Metallurgy and Materials

2008

Vol. 53, iss. 2

535-540

As the world wide demand for speciality steels continues to increase, significant attention is focused on the VD and VOD processes, with an increasing emphasis on lowering energy consumption, improving production rates, ensuring environmental compliance, and reducing greenhouse gas emissions. The combination of ladle tank installations having low leak rates with specialised, high capacity, dry mechanical vacuum pump systems now enable an integrated and optimised vacuum degassing station design, precisely specified for the needs of the process. High efficiency, 3-stage vacuum pump modules provide the required pumping capacity to suit the process together with a very economical power demand and a low consumption of utilities. Key features are the good operational flexibility of such installations and the integration of pump control, using variable frequency drives for each pump, directly into the control system. Overall efficiency is maximised and operating energy savings of up to 90% or more can be achieved, compared to conventional steam ejector-based systems. Additional major benefits are significant reduction in green house gas emissions and reduced effluent disposal costs.

Aktualnie dostrzegalny jest wzrost światowego zapotrzebowania na specjalne gatunki stali. Wpływa to na coraz większe zainteresowanie procesami VD oraz VOD. Związane jest to z dążeniem do zmniejszenia zużycia energii, podwyższeniem jakości produkcji oraz chęcią ochrony środowiska, a zwłaszcza ograniczeniem emisji gazów cieplarnianych. Połączenie starej oraz nie zawsze szczelnej instalacji odgazowania stali z bardzo wydajnym systemem suchych mechanicznych pomp próżniowych pozwala zoptymalizować prace stanowiska pomp, dostosowując precyzyjnie do potrzeb procesu. Wysoka sprawność 3 stopniowych modułów pomp próżniowych zapewnia wysoką wydajność, łącznie ze zmniejszeniem zapotrzebowania na energię oraz małego zużycia urządzeń. Jedną z ważniejszych cech takich układów jest elastyczność oraz możliwość sterowania zintegrowanego pomp, przy użyciu silników zmiennej częstotliwości dla każdej pompy indywidualnie, bezpośrednio włączonych do systemu sterowania. Osiągnięta wysoka wydajność stwarza możliwość zaoszczędzenia nawet do 90% energii w porównaniu z tradycyjnym systemem “smoczków” parowych. Dodatkową korzyścią jest ograniczenie emisji gazów cieplarnianych oraz ograniczenie wydatków na odprowadzenie dużej ilości ścieków przemysłowych.