International Journal of Engineering Research in Africa Vol. 47

Abstract: This study aims to experimentally investigate the performance of Juncus maritimus species in removing pollutants from domestic wastewater under arid conditions. The experiment was carried out for three month and several physicochemical and organic parameters were monitored. Results showed a good quality of filtered waters reflecting the high efficiency of vertical-flow filters. The presence of Juncus maritimus species promotes significantly the nitrogen elimination and augments the dissolved oxygen content at the outlet.It was also found that the planted filter provides small improvements in removing BOD₅, TSS and TP removal for the three pollutants. The mean removal rate obtained with Juncus maritimus filter was 91.05 % for BOD₅, 86.67 % for TSS, 78.45 % for Ntot, and 95.14 % for TP. Microbial activity, uptake by plants, adsorption and physical sedimentation are the main mechanisms of limiting the contaminants rates in the vegetated vertical-flow filter.

Abstract: In connection with the optimization of operation at the selected Wastewater Treatment Plant (WWTP), it is important to perform an energy audit with an assessment of the use of electricity and the subsequent economic optimization of the equipment of the WWTP. We can perform the energy balance through Life Cycle Assessment (LCA) analysis in relation to EN ISO 140 40 [1].The aim of this study case is the analysis of the energy balance of WWTP. The appraisal was performed on three different interpretation variants of specific electricity consumption. The conclusion is a comparison of variants of quantification of specific electricity consumption.

Abstract: Housing and activities integrate the satisfaction of other human needs. In this regard, we can look at housing as a tool for the development of society itself. The division of different forms of housing in the Czech Republic into several groups can be done in many different ways. It always depends on who formulates the different types of housing.

Abstract: This paper of the BIM method to the existing buildings of VŠB - TU Ostrava. The aim of the paper is to introduce the BIM method and the way in which this method is gradually implemented into three selected objects - nursery school, faculty of electrical engineering and informatics and faculty of civil engineering. During BIM implementation, 2D documentation is converted to BIM models and a digital twin is created.

Abstract: The interests focus on the tools, used in the case of evaluating the sustainability in the mobility structures. In the present is sustainable development regular part of planning in every scale. According to growing development and innovations, it was necessary to ensure a sustainable framework of progress or traffic performance. Sustainable development goals were founded as a reaction to limited natural sources and also as a response to the human impact on nature. Evolution of those goals started with the environmental base and then had also been added social and economic aspects. A study wants to find sophisticated tools for the evaluation of sustainable development in urban structures. As was located, in Europe exist methods for assessment of sustainability (EIA, SEA, LCA, EF, ER, GP, CBA, CEA, MCDA, EA, SIA, SEIA, etc.). Although even their large amount, they are mostly based on just one section of SD. Other tools which are used, are methods for evaluation sustainability (BREEAM, CASBEE-UD, GBI, LEED, IGBC, SB tool, DGNB, etc.), where are also included other sections (environmental, economic, social). Assessment tools were described and preliminary compared in the context of the factors’ coverage.