Issue 9/2022 (September 2022)

This article addresses the role that gas industry might play in energy transition and how it can support the industrial decarbonization. Sources of critical barriers to achieving these goals, ranging from financial and infrastructural to geopolitical, are identified. An attempt is made to critically review selected studies on reducing carbon footprint of industrial processes through renewable gases. At the same time, promising areas for future research are identified

The global energy market is facing a major challenge in terms of meeting the constantly growing demand for clean liquid and gaseous fuels, electricity, improving the efficiency of fuel and energy production and reducing greenhouse gas emissions. On these issues, the development of hydrogen technologies and the increased use of hydrogen in sustainable energy system is a promising pathway to solve the mentioned challenges. This article is a collection of key issues concerning hydrogen gas and related technologies. It defines the hydrogen economy by indicating the demand for it, taking into account the forecast of hydrogen demand in Poland for various sectors of the economy. The paper reveals the structure of electricity production and presents the existing possibilities of implementing hydrogen not only in the electricity and heating sectors, but also in the transport sector as an alternative fuel. The work analyses the mechanisms of hydrogen production using the electrolysis process, defining their energy consumption, advantages and disadvantages of alkaline, PEM and SOE electrolysers. The article briefly describes hydrogen storage, transport and distribution routes and costs. The concept of sector coupling and decarbonisation of the transport and industry sectors are also outlined. In addition, selected polish hydrogen-related projects are presented.

The article is a transcript of a paper presented at the conference which was the culmination of the celebration of the 100th anniversary of the Gaz Woda i Technika Sanitarna journal. It includes a subjective selection of the most important information related to the history, present day and the immediate future of water supply and sewage systems. The article includes three main parts. The first part, “A brief historical overview of water supply and sewage systems”, presents significant facts from the history of the development of water supply and sewage systems. The second part, “Contemporary water supply and sewage systems” focuses on selected innovative achievements in the field of water supply and sewage systems. The third part “Unresolved problems” presents several important challenges that are already or should be undertaken in the near future in order to ensure access to clean and healthy water for the inhabitants of the Earth

The article presents the history and genesis of the creation of central water supply and wastewater treatment systems. Attention was drawn to the emergence of the concept of Public Health linked to the sanitary condition of cities, which contributed to the development of cities and thus to economic development. The paper outlines the origin and development of water and wastewater treatment technologies. The article describes the current level of advancement of these technologies. The authors also presented a forecast concerning the further development of modern water and sewage management in cities. DOI: 10.15199/17.2022.9.5

Interview with Radosław Czajka – Vice President of the Management Board of Przedsiębiorstwo Wodociągów i Kanalizacji w Tarnowskich Górach Sp. z o.o.