Comparison of Two Sewerage Systems in the Zabok–Zlatar Agglomeration

The basis for his diploma thesis is the project Construction of Two Sewerage Systems in the Zabok-Zlatar Agglomeration. This is one of the larger construction projects in Croatia, carried out by the company CGP, d. d., from Novo mesto, where he is also employed. The descriptive method and the comparative method for comparing different sewerage systems were used in the preparation of the theoretical part.

Problem

The basis for his diploma thesis is the project Construction of Two Sewerage Systems in the Zabok-Zlatar Agglomeration. This is one of the larger construction projects in Croatia, carried out by the company CGP, d. d., from Novo mesto, where he is also employed. The construction of this system will bring enormous benefits to the entire district, primarily improving the quality of life from an ecological perspective.

At the beginning of the diploma thesis, he described the operating system of various sewerage systems and the general impact on the environment, as well as factors that influence the selection of appropriate materials. He also researched legislation in the field of sewerage and water supply construction. In doing so, he found that each sector has extensive legislation of its own.

Fortunately, most of these laws and regulations are now available in electronic form. In the theoretical part, he also described how and why the selection of a team is important for successful work, and which personnel are needed for such large projects. Safety and health of those involved in the project are very important, for which laws and regulations also exist, as well as training for all participants.

Based on the documentation he obtained for this project, he presented in detail the scheduling, scheduling fundamentals, as well as scheduling at the site itself. With the help of practical knowledge acquired during his studies and work in practice, he carried out a compilation and comparison of findings.

Solution and Method

The descriptive method and the comparative method for comparing different sewerage systems were used in the preparation of the theoretical part. The empirical part of the diploma thesis contains an example of an exploratory case study based on the proper selection of a sewerage system. For this case, he carried out time and cost estimates for pressure and gravity sewerage, as well as an assessment of the environmental impact when selecting a treatment plant.

ARSO states that in recent years, an increasing amount of wastewater has been treated using secondary or tertiary treatment processes, whilst primary treatment processes alone no longer exist. Tertiary wastewater treatment processes were almost non-existent in Slovenia in 2000, but in 2019, 72% of wastewater or 113 million m3 of wastewater was treated using such processes. This means that the amount of wastewater treated using secondary treatment processes has increased by 150% since 2000.

The main part includes extensive research on how the construction of sewerage and treatment plants can improve living conditions from an ecological perspective and enhance the quality of life.