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Gewählte Master / Diploma Thesis:

Kevin Keckeis (2018): BEITRAG ZU EINEM MODELL FÜR DIE ABSCHÄTZUNG DER AUSWIRKUNGEN EINER SYSTEMADAPTIERUNG AUF DEN KANALBETRIEB MIT FOKUS AUF FESTSTOFFMANAGEMENT.
Master / Diploma Thesis - Institut für Siedlungswasserbau, Industriewasserwirtschaft und Gewässerschutz (SIG), BOKU-Universität für Bodenkultur, pp 124. UB BOKU obvsg

Data Source: ZID Abstracts
Abstract:
The implementation of natural drainage systems in residential areas is an important instrument in water management planning. However, there is little information on the influence of the decoupling of paved areas on the transport of solids in sewers. This work therefore deals with the estimation of the effects of solids retention on the deposition situation in combined sewers as well as on possible consequences for the sewer operation using a mass balance model for solid matter. In this work, detailed cleaning of the sewers, gullies and dirt cups in a selected study area was carried out in order to draw conclusions about the annual deposits in this area. It has been shown that larger solid deposits in the sewers especially occur in the area of busy roads and in the vicinity of agricultural areas and that large amounts of the retained quantities in gullies and dirt cups were from grit from the winter service. On this basis, scenarios were developed which serve to estimate the deposition situation due to the decoupling of different areas. The results have shown that the decoupling of all roof areas in the study area has a negative effect on the formation of deposits in the sewer, as large amounts of waste water, which are significant for the rinsing effect, are retained. The decoupling of road surfaces, however, has a positive effect on the formation of deposits, since there is a better proportion between introduced wastewater and solids. In this case, however, special attention must be paid to the maintenance of natural drainage systems in order to maintain the functionality of those systems. The overall model shows that the decoupling of road surfaces in particular has an influence on the mechanical cleaning in the wastewater treatment plant.

Beurteilende(r): Ertl Thomas
1.Mitwirkender: Simperler Lena

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